NIM-2CE1T1-PRI – 2-Port T1/E1 PRI NIM – ASR 1001-X Support – Channelized Data

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NIM-2CE1T1-PRI Description

The NIM-2CE1T1-PRI is a Cisco 2-port T1/E1 PRI Network Interface Module for channelized and clear-channel WAN circuits on Cisco 4000 Series ISR and ASR 1001-X routers. The module has two T1/E1 ports that each carry 24 channel groups on T1 or 31 on E1, and it supports clear-channel data, unstructured E1 (G.703) and channelized data. The module is not supported on 2900 or 3900 routers, and packet voice is supported on Cisco 4000 Series ISR hosts with a PVDM4 fitted to the module, while the Cisco ASR 1001-X supported-hardware table lists it as not supported.

Quick Specs

Parameter

Specification

Product ID

NIM-2CE1T1-PRI

Product type

2-port T1/E1 PRI Network Interface Module

Supported host context

Cisco ASR 1001-X Router supported NIM table

Module category

Supported T1/E1 NIM

Number of ports

2

Clear-channel data

Yes

Packet voice

Cisco 4000 Series ISR: supported, requires PVDM4; Cisco ASR 1001-X: No

Unstructured E1 (G.703) support

Yes

Channelized data

Yes

Product category

Network Interface Module

Cisco source table

Supported NIM-T1/E1s

NIM-8CE1T1-PRI channel-group note

Each port supports only 15 channel groups

Application Scenarios

Dual T1 Or E1 Branch Trunks

A branch router terminates two T1 or E1 PRI circuits from a carrier on this module and carries them as channelized WAN links into the 4000 Series ISR or ASR 1001-X.

Clear-Channel And Unstructured E1 Links

A site with a point-to-point E1 leased line uses the unstructured E1 (G.703) mode, while a T1 data circuit runs in clear-channel mode, both from the same two-port module.

Product Comparison

Parameter

NIM-2CE1T1-PRI

NIM-1CE1T1-PRI

NIM-8CE1T1-PRI

Number of ports

2

1

8

Clear-channel data

Yes

Yes

Yes

Unstructured E1 (G.703) support

Yes

Yes

Yes

Channelized data

Yes

Yes

Yes

Packet voice

Cisco 4000 Series ISR: supported with PVDM4; Cisco ASR 1001-X: No

Cisco 4000 Series ISR: supported with PVDM4; Cisco ASR 1001-X: No

Cisco 4000 Series ISR: supported with PVDM4; Cisco ASR 1001-X: No

Channel groups per port

24 on T1, 31 on E1

24 on T1, 31 on E1

15 on ASR 1001-X

NIM-2CE1T1-PRI has two T1/E1 ports against one on NIM-1CE1T1-PRI and eight on NIM-8CE1T1-PRI, and all three are marked for clear-channel data, unstructured E1 (G.703) and channelized data. Port density decides the choice: one circuit fits NIM-1CE1T1-PRI, and eight circuits in one slot need NIM-8CE1T1-PRI. Cisco’s ASR 1001-X table limits each NIM-8CE1T1-PRI port to 15 channel groups, while CE1T1-PRI ports otherwise carry 24 channel groups on T1 and 31 on E1, so a design that needs more per port stays on NIM-2CE1T1-PRI. Packet voice depends on the host: it is supported on a Cisco 4000 Series ISR with a PVDM4 and not supported on the Cisco ASR 1001-X, where a voice trunk moves to an MFT model such as NIM-1MFT-T1/E1.

Ordering Checklist

  • Supported hosts: Order for a Cisco ASR 1001-X or the NIM slots of Cisco 4000 Series ISR routers. The NIM-xCE1T1-PRI family is not supported on 2900 or 3900 routers. On a Cisco 4000 Series ISR, order a PVDM4 sized for the voice channels if packet voice is needed; the Cisco ASR 1001-X supports the module for data only.

Specifications

Parameter Specification Parameter Specification
Product ID NIM-2CE1T1-PRI Product category Network Interface Module
Product type 2-port T1/E1 PRI NIM Supported host context Cisco ASR 1001-X Router
Cisco source table Supported NIM-T1/E1s Number of ports 2
Clear-channel data Yes Packet voice Cisco 4000 Series ISR: supported, requires PVDM4; Cisco ASR 1001-X: No
Unstructured E1 (G.703) support Yes Channelized data Yes
NIM-8CE1T1-PRI channel-group note Each port supports only 15 channel groups

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Questions & Answers

  • Which global clock command must be configured for NIM-2CE1T1-PRI?

    Always have the global command network-clock synchronization automatic configured on a router that carries NIM-2CE1T1-PRI. It may not be the default, depending on the IOS XE version, so check the running configuration after the module is installed. This requirement comes from the Fourth-Generation T1/E1 NIM configuration guide.
  • How is line clocking selected for the two ports of NIM-2CE1T1-PRI?

    To recover clocking from the line, always select a primary input source, with a secondary input optional. The controller clock source command offers internal, line (primary or secondary) and network. Internal makes the controller framer the clock master and applies only with the channel-group and pri-group commands for data.
  • What are the default T1 line settings on NIM-2CE1T1-PRI controllers?

    On a T1 controller of NIM-2CE1T1-PRI the defaults are esf framing, b8zs linecode and ansi for the facility data link. The crc-threshold default is 320 CRC errors in one second to reach a severely errored second. On an E1 controller the default linecode is hdb3.
  • Which E1 line termination options can be set on NIM-2CE1T1-PRI?

    On an E1 controller of NIM-2CE1T1-PRI, line-termination 75-ohm sets 75-ohm unbalanced termination and 120-ohm sets 120-ohm balanced termination. The command is E1 only and does not apply to T1 controllers. Pick the value that matches the termination the carrier specifies for the E1 circuit.
  • When is the cablelength long command used on NIM-2CE1T1-PRI?

    The cablelength long command applies to T1 cables longer than 660 feet on NIM-2CE1T1-PRI. It attenuates the transmitter pulse with pulse equalization and line build-out, and the loss values are 0db, -7.5db, -15db and -22.5db. The command is T1 only, and cablelength short is the shorter-cable form.

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  • NIM-2CE1T1-PRI Datasheet