Cisco 4 Port T1/E1 NM
Connecting Cisco CEoIP Network Modules to the
Network
Revised: May 1, 2008, OL-12829-01
This guide describes how to connect Cisco Circuit Emulation Over IP (CEoIP) network modules to your
network. It contains the following sections:
•
Cisco CEoIP Network Modules, page 1
•
4-Port Serial Interface Network Modules (NM-CEM-4SER), page 2
•
Connecting 4-Port Serial Interface Network Modules to the Network, page 3
•
4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1), page 8
•
Connecting 4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1) to the Network,
page 9
•
Related Documents, page 10
•
Obtaining Documentation, Obtaining Support, and Security Guidelines, page 10
Cisco CEoIP Network Modules
Cisco CEoIP network modules provide a virtual circuit through an IP network (similar to a leased line).
Transport of data, regardless of the content or structure of the data stream, is entirely transparent to the
destination; bits arriving at one end are delivered unchanged to the destination address.
This chapter provides information on the following two Cisco CEoIP network modules:
•
4-port serial interface network module (NM-CEM-4SER), shown in Figure 1
•
4-port T1/E1 RJ-48 interface network module (NM-CEM-4TE1), shown in Figure 2
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Connecting Cisco CEoIP Network Modules to the Network
4-Port Serial Interface Network Modules (NM-CEM-4SER)
See Manual before installation.
Connectors for Extended
Control Signals
NM-CEM-4SER
CEM 3
ACT LP
CEM 2
LP ACT
EN
AL
CEM 1
Figure 2
88898
4-Port Serial Interface Network Module (NM-CEM-4SER) Faceplate
CEM 0
4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE 1) Faceplate
NM-CEM-4TE1
88897
Figure 1
See Manual before installation
T1/E1 3
T1/E1 2
T1/E1 1
T1/E1 0
AL
EN
4-Port Serial Interface Network Modules (NM-CEM-4SER)
The 4-port serial interface network module (NM-CEM-4SER) is a single-wide CEoIP network module
with four serial ports that support the following interfaces:
Caution
•
EIA/TIA-232
•
EIA/TIA-449
•
EIA-530
•
EIA-530A
•
V.35
•
X.21
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the 4-port serial interface network module (NM-CEM-4SER) only to intrabuilding or
nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded
at both ends.
The interface type provided by the port is determined by the cable connected to the port. For information
on interface-specific cabling requirements, see the “Connecting 4-Port Serial Interface Network
Modules to the Network” section on page 3.
For information on network module LEDs, see the “4-Port Serial Interface Network Module
(NM-CEM-4SER) LEDs” section on page 3.
Connecting Cisco CEoIP Network Modules to the Network
2
Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port Serial Interface Network Modules to the Network
4-Port Serial Interface Network Module (NM-CEM-4SER) LEDs
See Figure 3 for the location of network module LEDs and Table 1 for LED descriptions.
4-Port Serial Interface Network Module (NM-CEM-4SER) LEDs
Connectors for Extended
Control Signals
NM-CEM-4SER
CEM 3
ACT LP
CEM 1
See Manual before installation.
88922
Figure 3
CEM 2
LP ACT
AL
EN
CEM 0
Active
Loopback
Active
Alarm
Enable
Table 1
4-Port Serial Interface Network Module (NM-CEM-4SER) LEDs
LED
Color
Meaning
ACT
Green
The channel on this port is operational.
LP
Yellow
A local or network loopback is present on the port.
AL
Red
Not used.
EN
Green
The network module has passed self-test and is available to the router.
Connecting 4-Port Serial Interface Network Modules to the
Network
The 4-port serial interface network module uses Smart Serial connectors, permitting each port to support
a basic or extended set of serial control signals, depending on the cable connected to the port.
Caution
To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety,
connect the 4-port serial interface network module (NM-CEM-4SER) only to intrabuilding or
nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded
at both ends.
The following basic set of control signals is used on Cisco 12-in-1 cables:
•
Data Terminal Ready (DTR)
•
Data Set Ready (DSR)
•
Request to Send (RTS)
•
Clear to Send (CTS)
•
Data Carrier Detect (DCD)
•
Local Loop (LL)
Connecting Cisco CEoIP Network Modules to the Network
3
Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port Serial Interface Network Modules to the Network
The following control signals are part of the extended set, in addition to the basic set listed above, and
are used on Cisco Extended 12-in-1 cables:
•
Remote Loop (RL)
•
Test Mode (TM)
•
Ring Indicator (RI)
Note
Control signal support depends on the interface type. Not all of the control signals listed above are
supported by every interface type.
Note
The control signal names used in this document are the names commonly used in the industry for
RS-232. Other interface types may use other names for the equivalent control signals.
The 4-port serial interface network module (NM-CEM-4SER) supports both Cisco 12-in-1 interface
cables and Cisco Extended 12-in-1 interface cables with user-defined end-connectors permitting
connection to either DTE or DCE interfaces.
Interfaces and DTE or DCE modes are defined by the type of cable connected to the network module.
Tip
Use the Cisco 12-in-1 cable for X.21 interfaces. The X.21 interface connector does not require an
additional DIN connector.
For information on using Cisco 12-in-1 cables with the 4-port serial interface network module, see
Table 3. Figure 4 illustrates how to connect the Cisco 12-in-1 cable to the network module.
For information on using Cisco Extended 12-in-1 cables with the 4-port serial interface network module,
see Table 4. Figure 5 illustrates how to connect the Cisco Extended 12-in-1 cable to the network module.
All serial interface types are available in DTE or DCE format: DTE requires a plug connector at the
customer premises equipment (CPE) end, and DCE requires a receptacle connector at the CPE end.
Serial Interface Data Rates and Distance Limitations
All serial signals are subject to distance limits, beyond which the signal degrades significantly or is
completely lost. Generally, the slower the data rate, the greater the distance the signal can travel.
Table 2 lists maximum recommended speeds and distances for each serial interface type. If you
understand and compensate for potential electrical problems, you may get good results at speeds and
distances greater than those listed. For instance, the recommended maximum rate for V.35 is 2 Mbps,
but 4 Mbps is commonly used.
Table 2
Maximum Recommended Speeds and Distances for Each Serial Interface Type
EIA/TIA-232 Distance
EIA/TIA-449, -530, -530A, V.35, X.21 Distance
Data Rate, bps
Feet
Meters
Feet
Meters
2400
200
60
4100
1250
4800
100
30
2050
625
9600
50
15
1025
312
Connecting Cisco CEoIP Network Modules to the Network
4
Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port Serial Interface Network Modules to the Network
Table 2
Maximum Recommended Speeds and Distances for Each Serial Interface Type
EIA/TIA-232 Distance
EIA/TIA-449, -530, -530A, V.35, X.21 Distance
Data Rate, bps
Feet
Meters
Feet
Meters
19200
25
8
500
150
38400
12
4
250
75
56000
9
3
100
30
Balanced drivers allow EIA/TIA-449, EIA/TIA-530, EIA/TIA-530A, V.35, and X.21 signals to travel
greater distances than EIA/TIA-232 signals. All balanced interfaces easily support 4 to 8 Mbps.
Using Cisco 12-in-1 Interface Cables with the 4-Port Serial Interface Network
Module (NM-CEM-4SER)
Table 3 lists the Cisco 12-in-1 interface cables supported by the 4-port serial interface network module.
Use the cable part number to order replacement or spare cables for the interface and DTE or DCE mode
appropriate for your network.
Figure 4 illustrates how to connect the Cisco 12-in-1 cable to the network module.
Table 3
Cisco 12-in-1 Interface Cable Part Numbers Used with the 4-Port Serial Interface
Network Module (NM-CEM-4SER)
Interface
DCE/DTE
Cisco Cable Part Number
EIA/TIA-232
Female DCE
Male DTE
CAB-SS-232FC
CAB-SS-232MT
EIA/TIA-449
Female DCE
Male DTE
CAB-SS-449FC
CAB-SS-449MT
EIA-530
Male DTE
CAB-SS-530MT
EIA-530A
Male DTE
CAB-SS-530AMT
V.35
Female DCE
Female DTE
Male DCE
Male DTE
CAB-SS-V35FC
CAB-SS-V35FT
CAB-SS-V35MC
CAB-SS-V35MT
X.21
Female DCE
Male DTE
CAB-SS-X21FC
CAB-SS-X21MT
Connecting Cisco CEoIP Network Modules to the Network
5
Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port Serial Interface Network Modules to the Network
Connecting the Cisco 12-in-1 Interface Cable to the 4-Port Serial Interface Network
Module (NM-CEM-4SER)
Connectors for Extended
Control Signals
NM-CEM-4SER
CEM 3
ACT LP
CEM 1
EIA/TIA-232
See Manual before installation.
88994
Figure 4
CEM 2
LP ACT
AL
EN
CEM 0
EIA/TIA-449
V.35
EIA-530
EIA-530A
X.21
Connections at the CPE
Using Cisco Extended 12-in-1 Interface Cables with the 4-Port Serial Interface
Network Module (NM-CEM-4SER)
Table 4 lists the Cisco Extended 12-in-1 interface cables supported by the 4-port serial interface network
module. Use the cable part number to order replacement or spare cables for the interface and DTE or
DCE mode appropriate for your network.
Figure 5 illustrates how to connect the Cisco 12-in-1 cable to the network module.
Connecting Cisco CEoIP Network Modules to the Network
6
Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port Serial Interface Network Modules to the Network
Table 4
Note
Cisco Extended 12-in-1 Interface Cable Part Numbers Used with the 4-Port Serial
Interface Network Module (NM-CEM-4SER)
Interface
DCE/DTE
Cisco Cable Part Number
EIA/TIA-232
Female DCE
Male DTE
CAB-SS-232FC-EXT
CAB-SS-232MT-EXT
EIA/TIA-449
Female DCE
Male DTE
CAB-SS-449FC-EXT
CAB-SS-449MT-EXT
EIA-530
Female DCE
Male DTE
CAB-SS-530FC-EXT
CAB-SS-530MT-EXT
EIA-530A
Female DCE
Male DTE
CAB-SS-530AFC-EXT
CAB-SS-530AMT-EXT
V.35
Female DCE
Female DTE
Male DCE
Male DTE
CAB-SS-V35FC-EXT
CAB-SS-V35FT-EXT
CAB-SS-V35MC-EXT
CAB-SS-V35MT-EXT
Cisco Extended 12-in-1 cables provide additional control signals through the DIN cable connection.
Connecting Cisco CEoIP Network Modules to the Network
7
Connecting Cisco CEoIP Network Modules to the Network
4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1)
Connecting the Cisco Extended 12-in-1 Interface Cable to the 4-Port Serial Interface
Network Module (NM-CEM-4SER)
CEM 3
ACT LP
Connectors for Extended
Control Signals
NM-CEM-4SER
CEM 1
EIA/TIA-232
EIA/TIA-449
See Manual before installation.
88923
Figure 5
CEM 2
LP ACT
AL
EN
CEM 0
V.35
EIA/TIA-530
EIA/TIA-530A
Connections at the CPE
4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1)
The 4-port T1/E1 RJ-48 interface network module (NM-CEM-4TE1) is a single-wide CEoIP network
module with four T1/E1 ports. (See Figure 2.) The NM-CEM-4TE1 connects to any T1/E1 interface for
voice or data.
4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs
See Figure 6 for the location of network module LEDs and Table 5 for LED descriptions.
Connecting Cisco CEoIP Network Modules to the Network
8
Connecting Cisco CEoIP Network Modules to the Network
Connecting 4-Port T1/E1 RJ-48 Interface Network Modules (NM-CEM-4TE1) to the Network
4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs
88921
Figure 6
See Manual before installation
NM-CEM-4TE1
T1/E1 3
T1/E1 2
T1/E1 1
T1/E1 0
AL
Alarm, loopback,
carrier LEDs
EN
Alarm
Enable
Table 5
4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) LEDs
LED
Color
Meaning
AL
Yellow
Loss of signal or loss of frame has occurred, or the network module is
unavailable because of excessive errors on the interface.
LP
Yellow
A local or network loopback on the port.
CD
Green
Activity is occurring on the interface (carrier detect).
EN
Green
The network module has passed self-test and is available to the router.
AL
Yellow
Not used.
Connecting 4-Port T1/E1 RJ-48 Interface Network Modules
(NM-CEM-4TE1) to the Network
The 4-port T1/E1 RJ-48 interface network module (NM-CEM-4TE1) uses a RJ-48 straight-through cable
to connect to the customer premises equipment (CPE) for use in T1 or E1 circuit emulation. (See
Figure 7.)
Note
All four ports on the network module must operate in the same software-configured mode, either as T1
ports or as E1 ports. The NM-CEM-4TE1 network module does not support combinations of T1 and E1
ports on the same network module.
When configured for E1 operation, the NM-CEM-4TE1 network module provides four 120-ohm
balanced ports. To connect any of these ports to a 75-ohm unbalanced network, use Cisco cable
CAB-ADP-75-120. For more information, see the Installing the 75-120-Ohm Adapter Cable on E1
Multichannel Port Adapters document:
http://www.cisco.com/en/US/docs/interfaces_modules/port_adapters/install_upgrade/cables_and_atten
uator/75-120ohm_cbl_e1_multichan_install/6728cabl.html
Connecting Cisco CEoIP Network Modules to the Network
9
Connecting Cisco CEoIP Network Modules to the Network
Related Documents
Connecting the 4-Port T1/E1 RJ-48 Interface Network Module (NM-CEM-4TE1) to the
Network
NM-CEM-4TE1
88924
Figure 7
See Manual before installation
T1/E1 3
T1/E1 2
T1/E1 1
T1/E1 0
AL
EN
T1/E1 CPE
Related Documents
For additional information, see the following documents and resources.
Related Topic
Document Title
Regulatory compliance and safety
information
Cisco Network Modules and Interface Cards Regulatory Compliance and Safety
Information
http://www.cisco.com/en/US/docs/routers/access/interfaces/rcsi/IOHrcsi.html
Cisco IOS software website and reference
documentation
Cisco IOS Software
http://www.cisco.com/web/psa/products/index.html?c=268438303
Obtaining Documentation, Obtaining Support, and Security
Guidelines
For information on obtaining documentation, obtaining support, providing documentation feedback,
security guidelines, and also recommended aliases and general Cisco documents, see the monthly
What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical
documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
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Connecting Cisco CEoIP Network Modules to the Network
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Connecting Cisco CEoIP Network Modules to the Network
Obtaining Documentation, Obtaining Support, and Security Guidelines
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Connecting Cisco CEoIP Network Modules to the Network
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Connecting Cisco CEoIP Network Modules to the Network
Obtaining Documentation, Obtaining Support, and Security Guidelines
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