Connecting Cisco ISDN PRI Network Modules to the Network
Channelized T1/E1 PRI Network Modules with G.703
CT1/PRI and CT1/PRI-CSU modules receive and transmit data bidirectionally, at the T1 rate of 1.544 Mbps.
Channelized T1/E1 PRI Network Modules with G.703
This section provides information about the following network modules:
•1-port T1/E1 channelized PRI network module with G.703 (NM-1CE1T1-PRI) (see Figure 1)
•2-port T1/E1 channelized PRI network module with G.703 (NM-2CE1T1-PRI) (see Figure 2)
Cisco T1/E1 channelized PRI network modules with G.703 provide connection of one or two primary rate ISDN lines. T1 or E1 interfaces are configurable through Cisco IOS command-line interface (CLI) commands. Each port supports 100/120-ohm balanced and 75-ohm unbalanced termination, and features RJ-48C connectors and cable accessories allowing for DB-15, BNC, and other connector types. An onboard advanced integration module (AIM) connector allows for future universal port AIM support.
Caution To comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility and safety, connect the 1-port T1/E1 channelized PRI network modules with G.703 (NM-1CE1T1-PRI) and 2-port T1/E1 channelized PRI network modules with G.703 (NM-2CE1T1-PRI) only to intrabuilding or nonexposed wiring or cabling. The intrabuilding cable must be shielded and the shield must be grounded at both ends.
Cisco T1/E1 channelized PRI network modules with G.703 (NM-1CE1T1-PRI and NM-2CE1T1-PRI) replace the following network modules (also described in this chapter):
•NM-1CE1B
•NM-1CE1U
•NM-1CT1
•NM-1CT1-CSU
•NM-2CE1B
•NM-2CE1U
•NM-2CT1
•NM-2CT1-CSU
For information on Cisco modular access routers supporting Cisco channelized T1/E1 PRI network modules with G.703, see Table 1.
Table 1 | Modular Access Routers Supporting Cisco Channelized T1/E1 PRI Network Modules |
| with G.703 | | |
| | |
Modular Access Router | NM-1CE1T1-PRI | NM-2CE1T1-PRI |
| | | | |
Cisco 26xx | | No | No |
| | | | |
Cisco 26xxXM | | Yes | Yes |
| | | | |
Cisco 2691 | | Yes | Yes |
| | | | |
Cisco 3620 | | No | No |
| | | | |
Cisco 3631 | | Yes | Yes |
| | | | |
Cisco 3640 | | No | No |
| | | | |
Connecting Cisco ISDN PRI Network Modules to the Network
