Cisco AS5350 Universal Gateway

Data Sheet
Cisco AS5350
Universal Gateway
The Cisco® AS5350 Universal Gateway is the only one-rack-unit (1RU) gateway supporting
2-, 4-, or 8-port T1/7-port E1 configurations that provides universal port data, voice, and fax
services on any port at any time (Figure 1). The Cisco AS5350 Universal Gateway offers high
performance and high reliability in a compact, modular design. This cost-effective platform
is ideally suited for Internet service providers (ISPs) and enterprise companies that require
innovative universal services.
Figure 1 Cisco AS5350 Universal Gateway
Cisco Any Service, Any Port
Your Complete Point-of-
The economic environment is prompting
Presence Solution
service providers to generate revenues
The Cisco AS5350 Universal Gateway
quickly, improve returns from capital
eliminates the need for switches and routers
investments, and adapt to changing
to create a point of presence (POP) or
demands for various services in the
“POP-in-a-box” solution. The Cisco
market place. Cisco Any Service, Any Port
AS5350 has three primary universal
(ASAP)—the architecture for rapid
gateway configurations: two Channelized
deployment of concurrent services on Cisco
T1(CT1)/Channelized E1(CE1)s, four
AS5000 universal gateways—allows service
CT1/CE1s, and eight CT1/seven CE1s. It
providers to meet these challenges. Cisco
also includes integrated signaling link
ASAP enables faster service introduction
termination (SLT) functions for direct
using a common platform for quick return
connection to a Common Channel
on investment (ROI). Service providers can
Signaling System 7 (SS7/C7) signaling
generate new revenue streams from
multiple voice and data services such as
The Cisco AS5350 comes with two 10/100
long-distance voice over IP (VoIP),
autosensing Ethernet ports, which are ideal
managed IP telephony, VPNs, and dial-up
for redundancy and firewall applications.
Additionally, two high-speed serial ports
are provided to support Frame Relay,
Point-to-Point Protocol (PPP), and
High-Level Data Link Control (HDLC)
backhaul. All backhaul interfaces support
Hot Standby Router Protocol (HSRP), and
all cards and the fan tray are hot-swappable
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for carrier-class resiliency. The Cisco AS5350 is the only gateway in
Primary Features
this form factor that offers universal port capability with these
high-availability features.
Cisco ASAP
The Cisco AS5350 also supports widely deployed routing protocols,
The Cisco ASAP architecture enables the Cisco AS5350 Universal
including those generally found in high-end access servers and
Gateway to operate simultaneously as a network access server
routers (for example, Border Gateway Protocol Version 4 [BGPv4],
(NAS) and a voice gateway, delivering universal services on any port
Open Shortest Path First [OSPF], Enhanced Interior Gateway
at any time. The Cisco ASAP services on the Cisco AS5350 include
Routing Protocol [EIGRP], and Intermediate
dial access, real-time voice and fax for local or long-distance
System-to-Intermediate System [IS-IS] Protocol). This capability
transport, managed services (hosted IP telephony, for example), and
allows service providers and enterprises to deploy the Cisco AS5350
unified communications on a call-by-call basis. Cisco AS5350
as a standalone universal port solution.
achieves cost savings through optimized use of the universal port
access infrastructure. Service providers can now quickly capitalize
Cisco AS5350 Universal Gateway Enables New Cisco
on new opportunities and realize multiple revenue streams from a
single access infrastructure.
The rich set of Cisco IOS® Software features available in the Cisco
AS5350 Universal Gateway enables ISP and enterprise network
Modular Architecture
managers to meet traditional dial-in access needs, including
All feature cards can be upgraded in the field to accommodate future
Internetwork Packet Exchange (IPX) and AppleTalk, while
technologies while providing a solution to meet today’s needs. The
supporting the migration to new universal port services.
removable system fan tray maximizes uptime.
The Cisco AS5350 supports a wide range of IP-based, value-added
Universal DSPs
services such as high-volume Internet access, regional- or
branch-office connectivity, corporate VPNs, long distance for ISPs,
international wholesale long distance, distributed prepaid calling,
SS7 interconnect, wholesale dial and voice, and enhanced voice
services. The Cisco AS5350 provides an ideal solution for telephony
application service providers (ASPs) that would like to deploy
PC-to-phone, voice portals, unified communications, IP
teleconferencing, voice-enabled Web commerce, and content
delivery services.
The Cisco ASAP architecture is based on universal DSP technology.
The universal DSP can execute multiple coder/decoder (codec)
and modem algorithms on any DSP at any time. When the type of
codec or modem required for a specific call has been determined, the
DSP activates the appropriate service type in real time. When the call
is determined, different signaling schemes and modem negotiations
are used to determine the actual firmware code to be downloaded
onto the DSP for that particular call.
Cisco customers worldwide have proven that Cisco AS5000
Remote Access Capabilities
universal gateways provide the flexibility, scale, reliability, and suite
The Cisco AS5350 Universal Gateway takes advantage of the
of services required to meet market demands. By providing the
full-feature richness and strong routing capabilities of Cisco IOS
industry’s broadest family of access server products with universal
Software. The Cisco AS5350 can be deployed in various
port digital signal processors (DSPs), Cisco Systems® makes it easy
architectures, from multiprotocol corporate networks (IP, IPX,
for customers to select the right starting point for a phased rollout
AppleTalk, and NetBEUI, for example) to service provider IP
based on revenue generation, without compromising future
networks. In addition, the Cisco AS5350 fully supports the
capabilities. Complemented by the industry’s highest-rated service
specialized needs of AOL, MSN, and other content-oriented dialup
and support, Cisco can also provide assistance with startup,
services through PPP, Layer 2 Tunneling Protocol (L2TP), or
maintenance, and marketing tasks, as well as advanced and custom
Transmission Control Protocol Clear (TCP Clear) connections.
The Cisco AS5350 also supports the most complete set of access
protocols of any access server, including PPP, IPX Control Protocol
(IPXCP), AppleTalk Control Protocol (ATCP), AppleTalk Remote
Access (ARA), NetBIOS Frame Control Protocol (NBFCP),
NetBIOS over TCP/IP, NetBEUI over PPP, and protocol translation.
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V.92 and V.44 Support
V.92 and V.44 are the latest modem standards adopted by the
Leading the industry through the adoption of new standards-based
industry. The standards specify a set of features that allow modems
H.323 technology, the Cisco AS5350 Universal Gateway supports
to mimic many of the benefits of broadband, including:
the scalability enhancements introduced in H.323v3 and H.323v4.
• V.44 increases throughput by more than 100 percent when
For example:
surfing the Internet
• Multiple concurrent calls can be supported over a single H.225
• V.92 Modem on Hold suspends an Internet session to place or
receive a phone call
• V.92 Quick Connect provides a faster connect time to the
call-signaling channel to reduce call-setup and call-clearing times
and increase network call capacity.
• H.225 messages can be transported over TCP or User Datagram
Protocol (UDP) as described in H.323 Annex E. Using UDP for
Service providers can offer revenue-generating services and increase
subscriber retention with V.92 and V.44 standards. Cisco Remote
call-signaling transport effectively enables media cut-through in
a single round trip.
Quick Connect saves the line conditions of the last number dialed,
• Ability to report capacity statistics to the gatekeeper on a
per-call basis for each DS0, trunk group, or carrier associated
with the public switched telephone network (PSTN)-side
interfaces to assist in routing decisions.
encouraging subscribers to dial into the same ISP to reduce
The Cisco AS5350 Universal Gateway supports a broad array of
connection time. Combined with greater compression and
proven, interoperable H.323-based solutions for service provider
connection speeds, V.92 and V.44 allow service providers to offer
networks including global long distance, distributed prepaid
their subscribers a “broadband-lite” experience, which enables
calling, SS7 interconnect, telephony application hosting, and
Internet users to experience the qualities usually associated with
unified communications.
Authentication Dial-In User Service (RADIUS) support for Modem
on Hold will allow premium subscribers to suspend their Internet
sessions for longer periods of time to place or receive phone calls.
broadband for the price of dialup or modem access.
Packet Telephony
SIP is the Internet Engineering Task Force (IETF) standard for
The framework for VoIP services on the Cisco AS5350 Universal
multimedia conferencing over IP. Defined in RFC 2543, SIP is an
Gateway is based on open interfaces and standards, and it allows an
ASCII-based, application-layer control protocol that can be used
ecosystem of partners to work together to develop innovative
to establish, maintain, and terminate calls between two or more
network services. Service providers are not locked into a single VoIP
endpoints. The SIP implementation on the Cisco AS5350 Universal
signaling technology when they choose the Cisco AS5350 —H.323,
Gateway includes support for key features such as third-party call
Session Initiation Protocol (SIP), Media Gateway Control Protocol
control and RFC 2833 dual-tone multifrequency (DTMF) relay for
(MGCP), and Trunking Gateway Control Protocol (TGCP) support
interconnection with ASP networks.
are all built in. This allows service providers to enable the call
control protocol that is the best fit for their network today, with the
Similarities Between H.323 and SIP
assurance that they can respond to evolving market requirements
• Both were designed to address session control and signaling
whenever necessary.
functions in a distributed call-control architecture
• Both are especially well-suited for communication with
intelligent network end points
Although SIP messages are not directly compatible with H.323, both
protocols can coexist in the same packet telephony network because
the Cisco AS5350 Universal Gateway has the ability to process
individual SIP and H.323 calls simultaneously. This allows service
providers to integrate complementary H.323 and SIP services in the
same network.
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Programmable Tool Command Language IVR 2.0
MGCP 1.0 is a protocol for centralized control of VoIP calls by
Integrated, programmable IVR extends the ability of the Cisco
external call-control elements known as media gateway controllers
AS5350 Universal Gateway to support unique and differentiated
(MGCs) or call agents. MGCP is described in the informational RFC
voice services. Voice application software developers can use the
2705, published by the IETF.
Tool Command Language (TCL) IVR 2.0 application programming
The Cisco AS5350 Universal Gateway includes support for the
interface (API) to create customized TCL scripts that control calls
MGCP network access server (NAS) package. This allows the
coming into or going out of the gateway. IVR systems collect user
platform to operate simultaneously as a network access server and
input in response to recorded messages. The prompts used in a TCL
a voice gateway to deliver universal port services in an MGCP
IVR 2.0 script can be either static or dynamic. The scripts are
network. Standards-based T.38 Fax Relay and RFC 2833 DTMF
event-driven, and call flow is controlled by a finite state machine
Relay are available with MGCP.
that is defined by the TCL script. All verbs are nonblocking—they
The Cisco AS5350 also supports the PacketCable Trunking
Gateway Control Protocol (TGCP) 1.0. PacketCable is an
industry-wide initiative to develop interoperability standards for
multimedia services over cable facilities using packet technology.
CableLabs developed the TGCP protocol, which contains
extensions and modifications to MGCP while preserving the basic
MGCP architecture and constructs.
Voice Extensible Markup Language
Solution Infrastructure
The Cisco AS5350 Universal Gateway has the ability to interpret
Voice Extensible Markup Language (VoiceXML) documents.
VoiceXML is an open-standard markup language used to create
voice-enabled Web browsers and interactive voice response (IVR)
applications. Just as HTML enables users to retrieve data with a PC,
VoiceXML enables subscribers to retrieve data with a telephone.
The accessibility of the telephone and its ease of use make
VoiceXML applications a powerful alternative to HTML for
accessing the information and services that the Internet provides.
The Cisco VoiceXML Solution Infrastructure takes advantage of
Cisco AS5350 DSP resources, signaling, and media-conversion
capabilities to execute VoiceXML application logic at the edge of the
network, offloading servers and the network to support unified
communications services. Cisco VoiceXML gateways support two
standard audio formats for recording and playback: .au
(audio/basic) and .wav (audio/wav). The VoiceXML Store and
Forward feature allows streaming-based voice recording and
playback features for various media including local memory, HTTP,
Extended Simple Mail Transfer Protocol (ESMTP), and Real-Time
Streaming Protocol (RTSP) for 14 different Cisco codecs and the
two standard audio file formats.
can execute without causing the script to wait. Prompts can be
played and digits can be collected over telephony or VoIP call legs.
Real-Time Streaming Protocol (RTSP)-based prompts are
supported. TCL IVR 2.0 offers enhanced multi-language support by
providing the capability to add new languages and text-to-speech
notations to the core IVR infrastructure. The Cisco Developer
Support Program supports companies developing or modifying TCL
IVR 2.0 scripts.
Integrated SLT
The trunk cards also have a serial and RJ45 interfaces for integrated
SLT functionality. With integrated SLT, the Cisco AS5350 Universal
Gateway provides distributed Message Transfer Part (MTP) SS7
signaling functionality directly on the gateway. Like the Cisco 2600
Series-based SLT, the integrated SLT backhauls upper-layer SS7
protocols across an IP network using Cisco Reliable UDP (RUDP),
terminating the MTP1 and MTP2 layers of the SS7 protocol stack.
Integrated SLT support is available through a software upgrade—no
new hardware is required. MTP3/ISUP backhaul is included. Pricing
is on a per-platform basis.
Voice Quality
The extensive voice and fax capabilities of the Cisco AS5350
Universal Gateway can help build a reliable, high-quality VoIP
network. Voice-quality tests confirm that the Cisco AS5350 delivers
end-to-end voice-quality performance that meets the high standards
established for toll-quality voice services in the PSTN. Comprehensive
voice-quality testing is a critical component in the Cisco AS5350
hidevelopment process. Cisco conducts subjective voice-quality tests
to determine mean opinion scores using a methodology derived from
International Telecommunication Union Telecommunication
Standardized Sector (ITU-T) Recommendations P.830 and P.831.
Objective voice-quality tests are also conducted using the Perceptual
Analysis Measurement System.
The high-performance design of the Cisco AS5350 Universal
Gateway minimizes delay and packet loss during voice encoding and
packetization processes. The Cisco AS5350 introduces minimal
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delay as voice data is received from the PSTN and transmitted to the
IP network for G.711 calls. Cisco quality-of-service (QoS) features,
including IP Precedence, Resource Reservation Protocol (RSVP),
• Voice call admission decisions based on overall CPU utilization
and call arrival rate at the individual gateway
• Voice call admission based on the prevailing conditions in the
Weighted Fair Queuing (WFQ), Weighted Random Early Detection
packet network such as end-to-end latency, jitter, or the ability
(WRED), and Multichassis Multilink PPP (MMP) fragmentation
to reserve the resources required to handle the call and assure
and interleaving, implemented on both the universal gateway and
backbone routing infrastructure, can provide a low-latency,
• Reporting information about only the available circuits to
high-reliability path for sensitive voice traffic through today’s
H.323 gatekeepers, taking into account the circuits in use for
data, voice, or fax services to achieve higher call-success rates
Echo control is essential for packet-switched networks to carry voice
traffic successfully. The Cisco AS5350 supports ITU-T
Fax Features
Recommendation G.168 for echo cancellation with a tail length up
Fax transmission over an IP infrastructure is an important and
to 128 ms. Fixed and adaptive jitter buffering and comfort-noise
growing service opportunity, especially in international markets
generation further enhance voice quality.
where fax represents a large percentage of network traffic. The
Cisco AS5350 Universal Gateway supports standards-based T.38
Voice Codecs
Real-Time Fax Relay and T.37 Fax Store-and-Forward, allowing
The Cisco AS5350 Universal Gateway offers multiple codecs to
greater interoperability between networks. The fax detection
meet interoperability, compression, and latency requirements for a
capabilities of the Cisco AS5350 allow service providers to offer a
variety of phone-to-phone and PC-to-phone applications—G.711,
single E.164 number for subscriber voice and fax services. Half as
G.723.1 (5.3K and 6.3K), G.726, G.729ab, G-Clear and GSM-FR.
many subscriber phone numbers are needed, resulting in significant
The same number of calls is supported across all codec types to
cost savings. The Cisco AS5350 also supports fax passthrough
simplify network engineering. Enabling voice activity detection
upspeed for VoIP environments that cannot support T.38 Real-Time
(VAD) reduces packet traffic through the network. With VAD
Fax Relay end to end.
enabled, the Cisco AS5350 detects silence and stops transmitting
packets when callers stop speaking. Variable frame sizing provides
Time-Division Multiplexing Switching
further control over speech packetization.
Time-division multiplexing (TDM) switching is the ability to take an
incoming call on a given DS0 and send it out on a different DS0
Call Admission Control
before the call is answered by the gateway. This feature is used in
For VoIP to be a practical replacement for standard PSTN telephony
applications such as:
services, customers need to receive the same consistent, high quality
• SS7 to Primary Rate Interface (PRI) grooming
of voice transmission they receive with basic telephone services. For
• Local number portability (LNP) support in Europe
real-time, delay-sensitive traffic such as voice, it is better to deny
network access under congestion conditions than to allow traffic
onto the network to be dropped and delayed, causing intermittent
impaired QoS and resulting in customer dissatisfaction.
Numerous QoS mechanisms exist in Cisco IOS Software to allow
service providers to design and configure packet networks that
provide the necessary low latency and guaranteed delivery
required for voice traffic. These mechanisms include tools such as
queuing, policing, traffic shaping, packet marking, and
fragmentation and interleaving.
• Meeting special provisionary requirements for test calls (for
example, 911 call handling)
This feature does not require any DSP resource and hence has no
impact on the dial, voice, or fax handling capability of the platform.
TDM switching plus network-side ISDN functionality provides a
means of grooming incoming traffic and passing selected calls to
external devices, such as private branch exchanges (PBXs), test sets,
VoIP gateways, or access servers. The Cisco AS5350 is capable of
switching calls between SS7, PRI, and channel-associated signaling
(CAS) trunks.
Call admission control (CAC) extends the QoS tool suite to protect
voice traffic from being negatively affected by other voice traffic,
keeping excess voice traffic off of the network. CAC allows the
Cisco AS5350 Universal Gateway to make deterministic and
informed decisions before a voice call is established based on
whether the required network resources are available to provide
suitable QoS for the new call. CAC provides:
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Security Management
Cisco IOS Software security features allow authorized users dialup
DSP Sparing and Pooling
access while preventing access to intruders. These features include:
multilevel password protection; user authentication such as
Password Authentication Protocol (PAP) and Challenge Handshake
Authentication Protocol (CHAP); access control lists (ACLs); IP
address spoofing prevention and logging; and support of the
industry-standard authentication, authorization, and accounting
(AAA) protocols; RADIUS; and Terminal Access Controller Access
Control System (TACACS+).
The Cisco AS5350 Universal Gateway meets high-availability
requirements. Modem and voice DSPs are pooled and can be
configured as hot spares. Because DSPs are allocated on a call-by-call
basis, a DSP failure will not cause a DS0 or B channel to be left
without a DSP to terminate the call. This prevents occurrence of
“holes” (unused channels) within a hunt group. Having spare DSPs in
the pool also allows DSP code to be updated without affecting active
calls. DSP resources are tested at power-up and after disconnect to
check for defects. Any defective DSPs found are moved to the resource
The Cisco AS5350 Universal Gateway has a wide range of
management tools designed to reduce operations costs. The Cisco
Universal Gateway Manager (UGM) is an element management
system that supports the configuration, management, and
troubleshooting of Cisco AS5000 universal gateways.
recovery pool. An automatic DSP recovery process can be activated to
recover DSPs in the recovery pool and add them back into the
resource pool if possible.
Hot-Swappable Cards and Fan Tray
Hot-swap capability on all cards allows hardware maintenance to
The console-management features include a comprehensive set of
be performed on an active access server with little or no service
debugging commands that can be enabled on a specific calling line
interruption. During a hot-swap, any card may be removed,
identification (CLID) or automatic number identification (ANI),
inserted, or replaced, and only the calls on the card being removed
called number (dialed number identification string [DNIS]), user, or
are affected. The Cisco AS5350 Universal Gateway chassis provides
interface to immediately isolate only the relevant debugging output.
five high-capacity fans with front-to-back airflow to cool the chassis.
The Simple Network Management Protocol (SNMP) v2 and v3
The fan tray can be replaced while the unit is in operation.
management capability includes a rich call-tracking SNMP
Management Information Base (MIB) that provides highly detailed
Redundant Backhaul Methods
records for active and historical calls, with a configurable
Three redundant methods, which can be used to backhaul traffic
call-history buffer. Call records can also be obtained through syslog
from the server to the network, are included by default on the Cisco
or RADIUS as an alternative to polling through SNMP. Call records
AS5350 Universal Gateway. The first method uses the two Fast
include connect rate, connect duration, disconnect codes,
Ethernet ports. These can be configured to run different types of
end-to-end delay, and line statistics. This information allows service
traffic on each link or use the HSRP in a redundant mode for
providers to debug problems for individual users. Wholesale dial
increased reliability. The second method uses the two high-speed,
and voice service providers can use this performance-management
12-in-1, 8-Mbps serial ports on the rear of the chassis. These ports
data to establish service-level agreements with their retail ISP
support all the Cisco serial routing protocols for flexibility in
connecting to remote networks. The third method uses trunk feature
The Cisco UGM is a next-generation element management system
cards as possible backhaul interfaces.
offering robust, scalable, carrier-class capabilities for Cisco AS5000
Environmental Monitoring
universal gateways. Providing comprehensive fault, configuration,
Thermal sensors monitor the inlet and outlet temperatures and
accounting/inventory, performance, security (FCAPS) capabilities,
temperature rise across each card. If the operating temperature of
the Cisco UGM enables operators to effectively configure, manage,
the system exceeds its maximum, the thermal sensors initiate a
and maintain dial-access networks. The Cisco UGM facilitates the
shutdown of the feature cards, starting with the modem cards and
rapid deployment of new services and provides quick and effective
finishing with the trunk cards. The trunk cards are shut down last
network diagnostics to meet the rigorous demands of today’s
so the system has a chance to recover before putting the trunks into
fast-moving marketplace.
alarm status at the central office. If the system continues to exceed
its maximum operating temperature, the thermal sensors initiate a
shutdown, preventing damage to the unit or its surrounding
environment from excess heat.
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The Cisco AS5350 Universal Gateway offers the option of a
redundant power supply or single power supply. The redundant
power supply system comprises a fully redundant switching power
Remote Access Services
Internet Connectivity
supply with two AC (or two DC) inputs to the main power modules.
Enterprises and service providers need to extend network access to
Each input and output is 100 percent fully redundant, with dual fans
a broad range of remote users, including employees, customers, and
for added reliability and mean time between failure (MTBF) of more
partners. Successful remote access means being able to connect these
than 1,000,000 hours in redundant mode. The single AC or DC
users from practically any location, almost transparently. The Cisco
power supply also has dual fans for added reliability and a MTBF of
AS5350 Universal Gateway, combined with Cisco IOS Software,
more than 200,000 hours. Both the redundant and single power
meets these needs by extending the core infrastructure through
supplies have internal protection features: overcurrent, overvoltage,
secure, reliable dial-in connections.
and thermal shutdown. Internal sensors to the power supplies
Data-over-voice-bearer service (DoVBS) is used in areas where ISDN
monitor all operational parameters, and alarm status is provided to
data calls are charged at a higher rate (or tariff) than ISDN voice
the system.
calls. The ISDN customer premises equipment (CPE) device
Regulatory Compliance
(terminal adapter or router) must support DoVBS operation—most
popular ISDN devices available today support DoVBS. The ISDN
The Cisco AS5350 Universal Gateway complies with Network
CPE device is programmed to signal all ISDN data calls as voice calls
Equipment Building Standards (NEBS) Level 3 requirements, as
to ensure that these calls are billed at the lower voice rate. Cisco
defined by Telcordia SR-3580, and also complies with European
Resource Pool Management (RPM) on the Cisco AS5350 is used to
requirements as defined by the European Telecommunication
configure a customer profile for DoVBS calls based on DNIS. This
Standards Institute (ETSI).
profile configures the Cisco AS5350 to treat all calls received on that
Multivendor Back-Office Integration
number as ISDN data calls, even if they are signaled as voice calls by
the PSTN network.
The Cisco AS5350 Universal Gateway supports RADIUS and
TACACS+ protocols for back-office integration, control, and
Wholesale Dial
security. In addition to supporting the IETF-defined RADIUS
Many ISPs and content providers (or “portals”) must provide dialup
attributes, Cisco IOS Software supports many vendor-specific
Internet access as part of their service packages, and enterprise
RADIUS attributes for both preauthentication and user
companies want to offer “private-label” Internet access to promote
authentication. This means that the Cisco AS5350 can be integrated
their brands. However, they do not have the experience, personnel,
into any multivendor remote access and voice network with no
time, or money to build out a dialup access infrastructure, or they
changes to the back-office systems.
cannot build it fast enough—particularly when expanding into new
regions. Service providers can now take advantage of this
Worldwide Certification
opportunity through the Cisco Wholesale Dial solution.
The Cisco AS5350 Universal Gateway is homologated worldwide
The Cisco Wholesale Dial outsourcing solution delivers “virtual
with all major T1 and E1 switch types.
port” capability across any number of Cisco remote-access servers.
Coupled with sophisticated port policy management that guarantees
Cisco IOS Software Enables Rich Services
Flexibility in Deploying New Services
port availability to wholesale customers, Cisco enables carriers and
ISPs to offer unique service offerings that drive incremental revenue
while keeping operations costs low. The network infrastructure
Demand for new services can be easily accommodated with the
deployed for wholesale dialup can also be used to offer standard
Cisco AS5350 Universal Gateway, whether the initial business
retail dialup services, plus other value-added services such as
opportunity is wholesale dial, prepaid calling card, unified
corporate dial outsourcing, Internet gaming, unified
communications, hosted IP telephony, or any other application. The
communications, VoIP, and VPNs.
flexibility to use the Cisco AS5350 in multiple service environments
provides unprecedented capital investment protection. It also
Regional- and Branch-Office Connectivity
ensures that remote access equipment can promptly adapt itself to
The Cisco AS5350 Universal Gateway is ideally suited for
any change in business environment or demand for new services.
deployment in branch offices for providing remote access for
The ability for service providers to offer innovative new services
telecommuters and mobile users. The CT1, CE1, and PRI interfaces
allows differentiation from competition.
can be used for remote access; the Ethernet ports can be used for
LAN connectivity; and the serial ports can be used for access to the
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corporate site or to the Internet. Using the IP Plus features of Cisco
prepaid and postpaid calling card services, application service
IOS Software, firewall functions can be enabled to protect internal
provider (ASP) termination, dial access, and voicemail/unified
servers. Using the Enterprise Plus features of Cisco IOS Software,
desktop protocols can be enabled.
The Cisco VIA solution scales easily for small and large voice
Access VPNs
networks. Using the Cisco AS5350 and Cisco VIA, service providers
The Cisco AS5350 Universal Gateway is ideally suited for providing
wholesale dial services to both large corporations and ISPs who do
not want to support their own dial pools. With Cisco IOS Software
support for VPNs, service providers can take advantage of their
existing infrastructures to deliver local dialup access for users of
enterprise networks. By providing virtual dialup solutions, service
providers can offer a full range of services closer to the remote user.
with existing data networks can quickly and easily add voice
services to their portfolios, while carriers who offer voice services
over existing TDM networks can expand their coverage more
cost-effectively. Cisco VIA extends network reach through
worldwide compatibility and operability, and is a field-proven
solution that has been deployed in more than 80 countries
Local calls can now be placed to gain access to the core
Distributed Prepaid Calling
infrastructures. Virtual dialup services not only attract more users of
The Cisco Prepaid Calling Card solution gives Internet telephony
this service, but because calls are terminated locally, long-distance
service providers a competitive advantage in the prepaid calling
charges are eliminated and infrastructure costs are reduced.
market. By tapping the intelligence embedded in IP network
VPN Provisioning and Accounting
components, the solution allows service providers to centralize the
Of importance to service providers in the VPN environment is the
need to both provision and account for the number of connections
that are allowed by VPN customers. Cisco Virtual Private Dialup
Network (VPDN) session-counting software can keep track of the
number of connections from the Cisco AS5350 Universal Gateway
to the user’s home gateway. This software is provided in Cisco IOS
Software running on the Cisco AS5350 and in the Cisco access
service application in a single location at a low cost while
bandwidth-intensive call connections are handled at the network
edge in Cisco gatekeepers and gateways. The benefit: lower costs
than traditional debit card applications, which are based on service
points in large POPs in circuit-switched networks. The prepaid
calling card solution supports IVR in different languages, so carriers
can target specific markets.
control server to provide comprehensive accounting and billing
SS7 Interconnect
information to ISPs about the virtual connections that their
Using the Cisco PGW 2200 Softswitch (or a third-party SS7 gateway)
customers make.
and the Cisco AS5350 Universal Gateway with integrated SLT
AOL Support
functionality, service providers can interconnect their data and VoIP
The Cisco AS5350 Universal Gateway offers 100 percent coverage
for dedicated AOL dial installations, as well as other services that
use the TCP Clear or autocommand Telnet method of carrying
dialup data. Domain Name System (DNS) round robin is also
supported to allow load balancing of connections across multiple
AOL hosts. The Cisco AS5350 also includes all the L2TP features
necessary to support clients with AOL 7.0 and later versions.
networks with the PSTN via SS7 links. In many countries carriers
must interconnect using SS7 to qualify for reciprocal compensation.
The Cisco PGW 2200 and Cisco AS5350 provide the interface needed
to interconnect using Q.931 over IP, allowing service providers to
enter markets previously unavailable to them because of signaling
requirements. SS7 trunks are more efficient than CAS trunks, and they
typically cost less than PRI trunks. With SS7, call setup time
decreases, increasing the amount of billable traffic carried by the
Packet Telephony Services
Cisco Voice Infrastructure and Applications
Managed Voice Services
The Cisco AS5350 Universal Gateway supports Cisco Voice
Telephony ASPs are emerging as an important market force, offering
Infrastructure and Applications (VIA), an ideal solution for service
new, hosted, enhanced IP communications services that provide
providers building next-generation networks. Cisco VIA is a VoIP
additional functionality beyond the services offered by the PSTN.
solution designed to lower network costs and rapidly deliver a
Example applications hosted by telephony ASPs include hosted IP
multitude of revenue-generating carrier-class voice transport
telephony, managed IP PBX, PC-to-phone services, unified
services. These include: national and international transport,
communications, multiservice VPN, IP contact center, IP
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teleconferencing, voice-enabled Web commerce, and content delivery.
receives an incoming call, the Cisco RPMS determines whether the
This creates new business partnering opportunities for VoIP service
call should be accepted based on information in the customer
providers. The standards-based Cisco AS5350 enables
interconnection between telephony ASPs and VoIP network
infrastructure providers to bring complete solutions to end users.
Cisco AS5350 Architecture
Unified Communications
The Cisco AS5350 Universal Gateway provides all the system
Unified communications uses the IP infrastructure to unify the
communications methods that were previously disjointed—e-mail
applications, fax machines, voice-mail systems, cellular phones, and
Web communications. This gives users a common method to both
access messages and initiate real-time communications—all using
familiar devices.
components that service providers have come to expect from
carrier-class products as well as all the routing, WAN, and QoS
features that are the hallmark of Cisco routing products. The Cisco
AS5350 uses a 250-MHz RISC microprocessor with 256K
secondary and 2-MB tertiary caching. The main CPU in the Cisco
AS5350 is also used in the Cisco 7200 Series Network Processing
Engine 300. The Cisco AS5350 offers the option of a redundant
Service providers can implement unified communications solutions
power supply or single power supply. The Cisco AS5350 has three
by deploying Cisco AS5350ss between traditional PSTN or wireless
slots that can contain trunk and universal port feature cards. The
networks and their packet-based telephony network and adding
Cisco AS5350 architecture uses distributed processing between the
application servers that support unified communications services.
feature cards and the motherboard to optimize the processing path
Cisco has partnered with several industry-leading developers to
for unparalleled performance (See Figure 2).
provide unified communications solutions. Following are some of
the cost-effective services that carriers can offer to build brand
Figure 2 Cisco AS5350 Chassis View
identity and increase customer loyalty while reducing turnover:
• Unified voice mail, fax, and e-mail
• Voice, fax, and e-mail retrieval by phone
• Integration of electronic documents with faxes
• Personal message agents
• Caller access to Web-based content through VoiceXML-enabled
Egress Interfaces
• Never-busy fax lines
The Cisco AS5350 Universal Gateway provides three redundant
• Broadcast fax
WAN backhaul methods for moving packets out to the network:
Service-Level Management
The Cisco AS5350 Universal Gateway supports RADIUS-based
Cisco RPM. This enables service providers to offer guaranteed port
availability across a shared infrastructure, which translates to
guaranteed service levels for their customers. In addition, Cisco
RPM offers the ability to ensure “fairness” across multiple
customers for the same shared ports when there is no service-level
• Two 10/100 autosensing Fast Ethernet ports
• Two 8 Mbps serial ports
• Any T1 or E1 port on a trunk feature card
Ingress Interfaces
The Cisco AS5350 Universal Gateway accepts and consolidates all
types of traffic, including dial-in analog, digital ISDN, wireless,
voice, Global System for Mobile Communications (GSM) V.110
calls, and fax calls. The Cisco AS5350 supports the following trunk
Resource pooling can be configured on a per-gateway or
feature cards as ingress interfaces:
per-network basis. In the former case, customer profiles stored on
• Two-port CT1/CE1/PRI termination
Cisco AS5350s determine how resources are allocated to each of the
wholesale service provider’s customers. Each customer is identified
based on a list of dialed numbers from DNIS. When network-wide
• Four-port CT1/CE1/PRI termination
• Eight-port CT1/CE1/PRI termination
service levels are required, external Cisco Resource Policy
Additionally, the two serial ports on the motherboard and trunk
Management System (RPMS) software running on a Sun Solaris
feature cards can be used for leased-line termination and
server holds the customer profiles and keeps track of port utilization
aggregation using Frame Relay, HDLC, or PPP.
across multiple Cisco AS5000 universal gateways and/or other
vendors’ RADIUS-compliant gateways. When the Cisco AS5350
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Cisco AS5350 Two-, Four-, and Eight-Port CE1/CT1/PRI
Figure 4 Cisco AS5350 60- and 108-Universal Port Feature Card
Termination Feature Cards
When provisioned for CE1 trunks, these cards provide for physical
termination for E1 R1, E1 R2, E1 PRI, or intermachine trunks
(IMTs). When provisioned as a CT1 trunk, it provides physical
termination for CAS, PRI, or IMT trunks, and includes channel
service units (CSUs) that connect directly to the telco network.
Nonintrusive monitoring of individual T1/E1 signals is available at
the front of the T1/E1 termination card via standard 100-ohm
bantam jacks (See Figure 3).
Figure 3 Cisco AS5350 Two-, Four-, or Eight-Port Termination
Feature Card
The Cisco AS5350 Universal Gateway is a cost-effective platform
that combines the functions of a VPN terminator, firewall, router,
access server, and voice gateway to create a complete
“POP-in-a-box” solution. The Cisco AS5350 is the only 1RU
universal gateway that delivers high reliability and performance in a
compact 8-T1/7-E1 density.
The Cisco AS5350 universal DSPs provide voice, data, and fax
services. The benefits to the service providers are flexibility in
deploying services and optimized utilization of their universal port
The following is a brief description of the trunk types supported:
• North American robbed-bit signaling (RBS) is supported on T1
trunks, including a variety of North American RBS protocol,
framing, and encoding types on these trunks
• CAS is supported for E1 trunks, with R2 signaling
access infrastructure. The Cisco AS5350 provides a space-saving
solution for Tier 2 and 3 ISPs, small Tier 1 POPs, and telephony
Tables 1 through 7 provide detailed specifications for the Cisco
• IMT is supported when used with an SS7 signaling controller
• Many countries require an E1 R2 variant; per-country defaults
are provided for supervisory and inter-register signaling
• Universal access (analog modem or digital calls) is supported
when an interface is configured for ISDN PRI signaling; PRI
signaling is available for both T1 and E1 trunks
Cisco AS5350 60- and 108-Universal Port Feature Cards
The Cisco AS5350 Universal Gateway 60- and 108-universal port
cards are full-featured DSP-based cards that support 60 (on the
former) or 108 (on the latter) modem, wireless, voice, and fax calls.
Modem-management features are available for troubleshooting,
including modem status, real-time call-in-progress statistics, modem
activity log, hard/soft busy out, and modem firmware upgrade.
Additional information can be obtained through the console,
SNMP, or RADIUS accounting via the call-tracker feature (See
Figure 4).
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Table 1 Cisco AS5350 Hardware Features and Benefits
Up to 8-T1/7-E1 data,
voice, or fax sessions
• Offers superior density in a compact form factor that is easy to deploy
Multiple egress
interface types
Universal port DSPs
• Provides flexibility in deploying services—voice, dialup, fax, ISDN termination
• Service providers can deliver universal services on any port at any time
Built-in resiliency
Two 10/100 Ethernet LAN connections
Two 8-MB serial connections
Trunk feature cards
Offers stackable design—low initial cost
Offers a universal port solution in one product
Hot-swappable cards and spare modems
Redundant power supply option
Three redundant backhaul methods
Thermal management and environmental monitoring
Fan tray hot-swappable while in rack
Improves network and service availability, reducing time and money lost because of
Table 2 Cisco AS5350 System Data
System Data
• 250-MHz RISC processor
Feature card slots
• Three slots
Egress ports
• Two 10/100-MB Ethernet ports
• Two 8-Mbps serial ports
• T1/E1 DS1 trunk feature cards
128- (default) to 512-MB SDRAM (maximum)
64- (default) to 128-MB shared I/O (maximum)
8- (default) to 16-MB boot Flash (maximum)
32- (default) to 64-MB system Flash (maximum)
2-MB Layer 3 cache
Table 3 Cisco AS5350 Chassis Data
Chassis Data
Dimensions (H x W x D)
1.75 x 17.5 x 20.5 in. (1RU)
22 lb (fully-loaded two-PRI configuration)
Normal operating conditions
0 to 40 C
-200 to 10,000 ft elevation
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Table 4 Cisco AS5350 Power Supply Data
Input Description
Input Specifications
Input power (AC unit)
114 to 140W (maximum)
Input voltage (AC unit)
100 to 240 VAC
Input current (AC unit)
2A (maximum), 1A (typical)
Input frequency (AC unit)
50 to 60 Hz
Input power (DC unit)
114 to 140W (maximum)
Input voltage (DC unit)
-48 to -60 VDC
Input current (DC unit)
3.0A (maximum), 2.0A (typical)
Table 5 Overview of Cisco AS5350 Protocols
LAN protocols
• IP, IPX, AppleTalk, DECnet, ARA, NetBEUI, bridging, HSRP, 802.1Q
WAN protocols
• Frame Relay, PPP, HDLC (leased line)
Routing protocols
• Routing Information Protocol (RIP), RIPv2, OSPF, IGRP, EIGRP, BGPv4, IS-IS, AT-EIGRP,
IPX-EIGRP, Next Hop Resolution Protocol (NHRP), AppleTalk Update-Based Routing Protocol
QoS protocols
Access protocols
• PPP, Serial Line Internet Protocol (SLIP), TCP Clear, IPXCP, ATCP, ARA, NBFCP, NetBIOS over
TCP/IP, NetBEUI over PPP, protocol translation (PPP, SLIP, ARA, X.25, TCP, local-area
transport [LAT], Telnet), and XRemote
• Multilink PPP (MLP), TCP/IP header compression, Bandwidth Allocation Control Protocol
(BACP), bandwidth on demand, traffic shaping
Voice compression
• G.711, G.723.1 (5.3K and 6.3K), G.726, G.729ab, G-Clear, GSM-FR
DSP voice features
IP Precedence
Resource Reservation Protocol (RSVP)
Weighted Fair Queuing (WFQ)
Weighted Random Early Detection (WRED)
Multichassis Multilink PPP (MMP) fragmentation and interleaving
Echo cancellation, programmable up to 128 ms
Transparent transcoding between A-law and mu-law encoding
Voice activity detection, silence suppression, comfort noise generation
Fixed and adaptive jitter buffering
Call progress tone detection and generation—Dial tone, busy, ring-back, congestion, and
reorder tones with local country variants
• Dual Tone Multifrequency (DTMF), Multifrequency, continuity testing
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Table 5 Overview of Cisco AS5350 Protocols (Continued)
Voice and fax
signaling protocols
H.323v2, H.323v3, H.323v4, SIP, MGCP 1.0, TGCP 1.0, VoiceXML, RTSP, ESMTP
T.38 Real-Time Fax Relay
T.37 fax store and forward
Fax passthrough
Modem passthrough
Fax detection
Open Settlements Protocol (OSP)
Media Resource Control Protocol (MRCP)
Text to Speech (TTS) servers
Automatic Speech Recognition (ASR) servers
• Integrated SLT functionality
Network security
RADIUS or TACACS+, PAP or CHAP authentication, local user/password database
DNIS, CLID, call-type preauthentication
Inbound/outbound traffic filtering (including IP, IPX, AppleTalk, bridged traffic)
Network Address Translation (NAT) and dynamic access lists
IP Security (IPSec) and policy enforcement (RADIUS or TACACS+)
L2TP, Layer 2 Forwarding (L2F), and generic routing encapsulation (GRE) tunnels
Firewall security and intrusion detection
QoS features (committed access rate, Random Early Detection, IP Precedence, policy-based
Channelized T1
• Robbed-bit signaling; Loop Start, Immediate Start, and Wink Start protocols
Channelized EI
• CAS, E1 R1, E1 R2, leased line, Frame Relay, G.703, G.704
ISDN protocols
Sync-mode PPP, V.120, V.110 at rates up to 38400 bps
Network- and user-side ISDN
NFAS with backup D-channel
QSIG, Feature Group B, Feature Group D
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Table 5 Overview of Cisco AS5350 Protocols (Continued)
Modem protocols
• V.90 or V.92 standard supporting rates of 56000 to 28000 in 1333-bps increments
• V.92 Modem on Hold and Quick Connect
• V.44 Compression supporting increased throughput by more than 100 percent for Internet
• Fax out (transmission) Group 3, standards EIA 2388 Class 2 and EIA 592 Class 2.0, at
modulations V.33, V.17, V.29, V.27ter, and V.21
• K56Flex at 56000 to 32000 in 2000-bps increments
• ITU-T V.34 Annex 12 at 33600 and 31200-bps
• ITU-T V.34 at 28800, 26400, 24000, 21600, 19200, 16800, 14400, 12000, 9600, 7200, 4800, or
• V.32bis 14400, 12000, 9600, 7200, 4800; V.32 9600, 4800; V.22bis 2400, 1200; V.21 300; Bell
103, 300; V.22 1200; V.23 1200/75
• ITU-T V.42 (including Microcom Networking Protocol [MNP] 2-4 and Link Access Procedure
for Modems [LAPM]) error correction
• ITU-T V.42bis (1000 nodes) and MNP 5 data compression
• Async-mode PPP
Wireless protocols
• V.110 and V.120
Full Cisco IOS
Software pupport
• IP Plus and Enterprise Plus feature sets
Console and
auxiliary ports
• Asynchronous serial (RJ-45)
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Table 6 Cisco AS5350 Compliance Data
NEBS Certification
Telcordia SR-3580
GR-1089-CORE, Issue 2
GR-63-CORE, Issue 1
Level 3 certification based on usage and critical nature of equipment
All equipment CLEI coded
Available in TIRKS database
Safety Certifications
UL 1950, third edition
CSA 950, third edition
EN 60950, with Amendments 1, 2, 3, and 4
IEC 60950
AS/NZS 3260
TS 001
Electromagnetic Emissions
and Immunity Compliance
EN 55022B (CISPR22)
EN 300386
NZS/AS3548 Class B
FCC 47CR15 Class B
Table 7 Cisco AS5350 Environmental Data
Environmental Specifications
Heat dissipation
478 Btu/hr (maximum), 389 Bt/hr (typical)
AC power cable supplied with AC systems
Single power supply: 18 American wire gauge (AWG), 15-amp
IEC 320 Type C13 standard cable
Redundant power supply: 18 American wire gauge (AWG),
15-amp IEC 320 Type C5 standard cable
DC power cable required for DC systems
12-14 AWG stranded copper wire
Storage temperature
25.8 to 185ºF (-40 to 85ºC)
55 dBA max.; sound pressure level at 1m
5 to 95 percent, noncondensing
-200 to 10,000 ft
Reliability (at 40ºC, 120 VAC and -48VDC, 140W)
7500 FITS per TR-332, (FIT = 1/MTBF)
1.5 x 105 hours MTBF per RIN
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Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
Tel: 408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100
European Headquarters
Cisco Systems Europe
11, Rue Camille Desmoulins
92782 Issy-les-Moulineaux
Cedex 9
Tel: 33 1 58 04 60 00
Fax: 33 1 58 04 61 00
Americas Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
Tel: 408 526-7660
Fax: 408 527-0883
Asia Pacific Headquarters
Cisco Systems, Inc.
Capital Tower
168 Robinson Road
#22-01 to #29-01
Singapore 068912
Tel: +65 6317 7777
Fax: +65 6317 7799
Cisco Systems has more than 200 offices in the following countries and regions. Addresses, phone numbers, and fax numbers are listed on the
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