Cisco 32-Channel Packet Voice/Fax DSP Module Datasheet

Data Sheet

Cisco High-Density Packet Voice Digital Signal Processor

Module for Cisco IP Communications Solution

Product Overview

The Cisco

®

High-Density Packet Voice Digital Signal Processor (DSP) Module (PVDM2) enables

Cisco Integrated Services Routers to provide high-density voice connectivity, conferencing, and transcoding capabilities in Cisco IP Communications solutions. Cisco Integrated Services Routers provide enterprises and service providers with a toll bypass solution by connecting their existing telephony equipment (such as private branch exchanges [PBXs], key systems, analog telephones, and fax machines) to a toll-free data network and eventually migrating customers to Cisco AVVID

Architecture for Voice, Video and Integrated Data IP telephony solutions.

The high-density packet voice DSP modules are available in five versions: PVDM2-8, PVDM2-16,

PVDM2-32, PVDM2-48, and PVDM2-64 (Figure 1). Tables 1 and 2 show the number of voice channels and codecs that each PVDM2 module supports.

Figure 1. PVDM2 Top and Bottom Views

PVDM2-64

Top Bottom

PVDM2-48

PVDM2-32

PVDM2-8 and PVDM2-16

Table 1. Channel Density of Each PVDM2 Module

Name Description*

PVDM2-8 8-channel packet fax and voice DSP module

PVDM2-16 16-channel packet fax and voice DSP module

PVDM2-32 32-channel packet fax and voice DSP module

Number of DSPs

Maximum Number of Channels in

G.711

1** 8

1***

2

16

32

6

12

Maximum Number of

Channels in High-

Complexity Codecs

4

Maximum Number of

Channels in Medium-

Complexity Codecs

4

8

16

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Data Sheet

Name Description* Number of DSPs

3

Maximum Number of Channels in

G.711

48

Maximum Number of

Channels in High-

Complexity Codecs

18

Maximum Number of

Channels in Medium-

Complexity Codecs

24 PVDM2-48 48-channel packet fax and voice DSP module

PVDM2-64 64-channel packet fax and voice DSP module

4 64 24 32

* The number of channels in PVDM2 product numbers and descriptions is the maximum channel density with the G.711 codec.

** One Texas Instrument TNETV2505GGW DSP

*** One Texas Instrument TNETV2510GGW DSP

Table 2. Codec Support on the PVDM2 Module

Name High-Complexity Codecs Medium-Complexity Codecs

PVDM2 Module G.723.1, G.728, G.729, G.729b, iLBC, and

Modem Relay

G.7112, g.729a, G.729ab, G.726, G.722, and

Fax Relay

* PVDM2 can support a higher density of G.711 calls than that of other medium-complexity codecs. See

Table 1.

PVDM2 connects to the host through 80-pin single inline memory module (SIMM) slots. The module is field insertable and removable. Figure 2 shows how PVDM2 is plugged into PVDM2 SIMM slots on the Cisco highdensity digital voice network modules.

Figure 2. PVDM2 SIMM Slots on the Cisco High-Density Digital Voice Network Modules

Features and Benefits

Investment Protection and Field-Upgradable Capability

PVDM2 is used across a series of Cisco Integrated Services Routers and high-density voice network modules, allowing users to distribute or reuse DSP resources among the routers or network modules as needed. The field-upgradable capability enables users to easily scale their voice deployments.

In addition, each DSP on the PVDM2 provides four times the processing power and more memory than the existing PVDM. The high performance of PVDM2 supports future growth.

High Density and Flexibility

PVDM2 provides high call density per DSP and flexibility of channel allocation. The maximized support of uncompressed G.711 voice calls optimizes DSP utilization for the solutions, mainly

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Data Sheet based on G.711 codecs such as IP telephony, in a LAN where the bandwidth consumed by uncompressed calls is not a concern.

Conferencing and Transcoding Services

With PVDM2, Cisco Integrated Services Routers and voice network modules provide both digital and analog voice connections and conferencing and transcoding services. Table 3 shows conferencing sessions support per DSP with CUCM (Cisco Unified Communications Manager). In conjunction with host software, PVDM2 supports universal transcoding when needed. Universal transcoding allows transcoding from any supported codec to any other supported codec. As a general rule, the number of sessions needed for a universal transcoding channel is the sum of the session requirements for two separate voice channels, one running each of the configured codecs.

For example, a channel running universal transcoding from a G.729a codec to iLBC would need the session capacity for a voice channel running the G.729a codec and MIPS (million instructions per second) for a voice channel running the iLBC codec.

Table 3. Hardware Conferencing Support on PVDM2 with CUCM

Codec Type

G.711

G.729a

Number of Conferences per DSP (PVDM2-16)

8 conferences X 8 conferees

2 conferences X 8 conferees

Improved Voice Quality

PVDM2 performs compression, voice activity detection, jitter management, and echo cancellation functions to improve voice quality. The echo cancellation offered in PVDM2 has a tail length of 64 milliseconds (ms) and complies with International Telecommunication Union (ITU)-T G.168.

Availability of Features

Table 4 summarizes the availability of features.

Table 4. Features Availability

Name

PVDM2-8, PVDM2-16, PVDM2-32,

PVDM2-48, and PVDM2-64

Platform Support

NM-HDV2, NM-HDV2-1T1/E1, and

NM-HDV2-2T1/E1

PVDM2-8, PVDM2-16, PVDM2-32,

PVDM2-48, and PVDM2-64

Cisco 2801*, 2811, 2821, and 2851

Integrated Services Routers

Availability

IP voice or IP plus above images

IP voice and above images

Release

Cisco IOS

®

Software

Release 12.3(7)T

Cisco IOS Software

Release 12.3(8)T4

PVDM2-8, PVDM2-16, PVDM2-32,

PVDM2-48, and PVDM2-64

EVM-HD-8FXS/DID, EM-HDA-8FXS, and EM-4BRI-NT/TE

IP voice and above images

Cisco IOS Software

Release 12.3(8)T4

PVDM2-8, PVDM2-16, PVDM2-32,

PVDM2-48, and PVDM2-64

Cisco 3825 and 3845 Integrated

Services Routers

IP voice and above images

Cisco IOS Software

Release 12.3(11)T

* The conferencing and transcoding feature on the Cisco 2801 will be available in a future Cisco IOS Software release.

Product Specifications

Table 5 presents product specifications.

Table 5. Product Specifications

Feature

Components

Specifications

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Data Sheet

Feature

DSP

DSP CPU Clock

DSP External Memory

Interface

Features

Echo Cancellation

Approvals and Compliance

Safety

Specifications

● Texas Instruments TNETV2510GGW for PVDM2-16, PVDM2-32, PVDM2-

48, and PVDM2-64

● Texas Instruments TNETV2505GGW for PVDM2-8

● 200 MHz for TNETV2510GGW

● 175MHz for TNETV2505GGW

128-megabit synchronous dynamic RAM for each DSP (for both TI 2510 and TI

2505)

80-pin SIMM interface

Software echo cancellation compliant with ITU-I G.168, with 64-ms tail coverage

● IEC 60950 (worldwide) and AS/NZS 3260 (Australia and New Zealand)

● CAN/CSA-C22.2 No. 60950 (Canada) and GB4943-95 (People’s Republic of China)

● EN60950 (CENELEC; includes EU and EFTA)

● SS337 (Singapore; PSB approval), NOM-019-SCFI-1998 (Mexico), and UL

60950 3rd edition (United States)

Platform dependent

System dependent

Homologation

Mean Time between Failure (MTBF)

EMC

CISPR22, Class B

EN55022, Class B

CFR47, Part 15, Subpart B, Class B

EN61000-3-2

EN61000-3-3

CISPR24

EN 55024

EN50082-1

EN61000-3-2

EN 61000-3-3

EN 61000-4-2

EN 61000-4-3

EN 61000-4-4

EN 61000-4-5

EN 61000-4-6

EN 6100-4-8

EN 61000-4-11

Emissions

Emissions

Emissions

Harmonics

Flicker

Immunity

Immunity

Immunity

Harmonics

Flicker

Electrostatic discharge (ESD)

Radio frequency (RF) fields

EFT

Surge

Conducted RF

Power-frequency magnetic fields

Voltage dips, sags, and interruptions

Ordering Information

Table 6 presents ordering information.

Table 6. Ordering Information

Description

8-Channel Packet Fax/Voice DSP Module, or spare

16-Channel Packet Fax/Voice DSP Module, or spare

32-Channel Packet Fax/Voice DSP Module, or spare

48-Channel Packet Fax/Voice DSP Module, or spare

64-Channel Packet Fax/Voice DSP Module, or spare

Part Number

PVDM2-8 or PVDM2-8=

PVDM2-16 or PVDM2-16=

PVDM2-32 or PVDM2-32=

PVDM2-48 or PVDM2-48=

PVDM2-64 or PVDM2-64=

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Data Sheet

To place an order, go to the Cisco Ordering homepage: http://www.cisco.com/en/US/ordering/index.shtml

.

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