NIM-1CE1T1-PRI – 1-Port T1/E1 PRI NIM – ASR 1001-X Support – Channelized Data

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NIM-1CE1T1-PRI Description

The NIM-1CE1T1-PRI is a Cisco 1-port T1/E1 PRI Network Interface Module for T1 and E1 circuits on Cisco 4000 Series ISR and Cisco ASR 1001-X routers. The port supports clear-channel data, unstructured E1 (G.703) and channelized data, with 24 channel groups on a T1 and 31 on an E1 in a Cisco 4000 Series ISR. 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-1CE1T1-PRI

Product type

1-port T1/E1 PRI Network Interface Module

Supported host context

Cisco 4000 Series ISR NIM slots; Cisco ASR 1001-X supported NIM table

Module category

Supported T1/E1 NIM

Number of ports

1

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

Channelized T1/E1 Branch WAN

At a branch with a single carrier T1 or E1 circuit, the module terminates the line on a Cisco 4000 Series ISR and carries channelized data to the provider.

ASR 1001-X Circuit Termination

On a Cisco ASR 1001-X at an aggregation site, the module adds one T1/E1 port for a clear-channel or unstructured E1 (G.703) link.

Product Comparison

Parameter

NIM-1CE1T1-PRI

NIM-2CE1T1-PRI

NIM-8CE1T1-PRI

Number of ports

1

2

8

Supported hosts

Cisco 4000 Series ISR NIM slots; Cisco ASR 1001-X

Cisco 4000 Series ISR NIM slots; Cisco ASR 1001-X

Cisco 4000 Series ISR NIM slots; Cisco ASR 1001-X

Clear-channel 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

Unstructured E1 (G.703) support

Yes

Yes

Yes

Channelized data

Yes

Yes

Yes

Channel groups per port

24 for T1 or 31 for E1 (Cisco 4000 Series ISR)

24 for T1 or 31 for E1 (Cisco 4000 Series ISR)

15 (ASR 1001-X table note)

NIM-1CE1T1-PRI is the one-port module of this CE1T1-PRI group, and NIM-2CE1T1-PRI differs from it only in port count, with two ports instead of one; all three modules in the table list clear-channel data, unstructured E1 (G.703) and channelized data, and packet voice depends on the host: supported on a Cisco 4000 Series ISR with a PVDM4, not supported on the Cisco ASR 1001-X. A site that needs eight T1/E1 circuits on one module moves to NIM-8CE1T1-PRI, where Cisco notes that each port supports only 15 channel groups. On a Cisco 4000 Series ISR, each NIM-1CE1T1-PRI port carries 24 channel groups for T1 or 31 for E1.

Ordering Checklist

  • Cisco 4000 Series ISR hosts: Install the module in a Cisco 4000 Series ISR router with a free NIM slot. The T1/E1 NIM family is documented for Cisco 4000 Series ISR NIM slots and is not supported on Cisco 2900 and 3900 ISRs.
  • Cisco ASR 1001-X: Use the module in a Cisco ASR 1001-X router only for data. The ASR 1001-X is the other documented host, and its supported-hardware table lists packet voice as No.
  • Packet voice on ISR: Order a PVDM4 sized for the voice channels for the module when packet voice runs on a Cisco 4000 Series ISR. Without a PVDM4 on the NIM, the module carries data only.

Specifications

Parameter Specification Parameter Specification
Product ID NIM-1CE1T1-PRI Product category Network Interface Module
Product type 1-port T1/E1 PRI NIM Supported host context Cisco 4000 Series ISR NIM slots; Cisco ASR 1001-X
Cisco source table Supported NIM-T1/E1s Number of ports 1
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

Get More Information

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    Good

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    5.0

    good all round.

    Hannah S.
    Posted on 31/07/2026
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    5.0

    Tracking updated the whole way.

    Frank J.
    Posted on 29/07/2026
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    5.0

    Easy to find the part number, good deal. they had it in stock when others didn’t

    Marty C.
    Posted on 24/07/2026
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    4.0

    shipped fast. good price for a genuine part, tracking updated the whole way. lead time was long

Questions & Answers

  • Is NIM-1CE1T1-PRI supported in a Catalyst 8300 router?

    Yes. Cisco lists NIM-1CE1T1-PRI among the channelized E1/T1 PRI NIMs for the Catalyst 8300, together with the serial and multiflex T1/E1 WAN NIMs. The Cisco ASR 1001-X hardware installation guide also lists it in its T1/E1 NIM table.
  • Does NIM-1CE1T1-PRI need a PVDM4 for voice on a Cisco 4000 Series ISR?

    Yes. Packet voice on NIM-1CE1T1-PRI is supported on Cisco 4000 Series ISR hosts only with a PVDM4 fitted to the module. Without a PVDM4 the module carries data only. The Cisco ASR 1001-X supported-hardware table lists packet voice as not supported, so voice needs an ISR host.
  • How many channel groups does each NIM-1CE1T1-PRI port carry?

    Each NIM-1CE1T1-PRI port carries 24 channel groups on a T1 and 31 on an E1 in a Cisco 4000 Series ISR. The port also supports clear-channel data, unstructured E1 (G.703) and channelized data, so one circuit can run in any of those modes.
  • Is NIM-1CE1T1-PRI supported on Cisco 2900 and 3900 routers?

    No. NIM-1CE1T1-PRI is documented for Cisco 4000 Series ISR NIM slots and for the Cisco ASR 1001-X, and the T1/E1 NIM family is not supported on Cisco 2900 and 3900 ISRs. Install it in a Cisco 4000 Series ISR with a free NIM slot.

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DataSheet Downloads

  • NIM-1CE1T1-PRI Datasheet