NIM-2FXSP – 2-Port FXS Voice – P-Version Analog NIM – Cisco ISR

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NIM-2FXSP Description

The NIM-2FXSP is a Cisco two-port analog voice Network Interface Module, a P hardware revision for Cisco 4300 and 4400 Series ISR NIM slots, built for analog phones, fax machines and DID lines at branch sites. The module provides two FXS, FXS-E and DID capable voice ports and onboard DSP, so no motherboard PVDM is needed, and it works the same as the non-P version. The module requires Cisco IOS XE 16.5 or later; on earlier releases it boots, but its analog ports do not appear in show voice port summary.

Quick Specs

Parameter

Specification

Product ID

NIM-2FXSP

Product type

2-port FXS analog voice Network Interface Module

Cisco ordering description

2-Port Network Interface Module – FXS, FXS-E and DID

Total ports

2 FXS/FXS-E/DID-capable voice ports

P-version note

New manufacturing component version; no functionality change from the non-P version

Analog interface role

Station-side FXS service or DID incoming-call service

ISR G2 comparison

VIC3-2FXS/DID

Supported router context

Cisco 4000 Series ISR NIM slots; Cisco 4300 and 4400 Series support context

Cisco IOS XE release for this SKU

XE16.5 and above

Voice package requirement

Minimum Unified Communications technology package for voice applications

DSP design

Onboard DSP on the voice NIM; no dedicated motherboard PVDM required for this voice module family

OIR support

Supported in Cisco 4000 Series ISR NIM slots; managed OIR requires no active calls

Application Scenarios

Analog Voice On A Current Release

A branch router already running Cisco IOS XE 16.5 or later adds two analog station ports for desk phones and fax machines without a separate analog gateway.

Key System And DID Handoff

A small office with a legacy key system links it to an FXS port, and the same module accepts incoming DID calls from the central office.

Product Comparison

Parameter

NIM-2FXSP

NIM-2FXS

NIM-4FXSP

NIM-2FXS/4FXOP

Total ports

2 FXS, FXS-E and DID ports

2 FXS, FXS-E and DID ports

4 FXS, FXS-E and DID ports

2 FXS, FXS-E and DID ports and 4 FXO ports

Product description

2-port NIM, FXS, FXS-E, and DID

2-port NIM, FXS, FXS-E, and DID

4-port NIM, FXS, FXS-E, and DID

2-Port FXS/FXS-E/DID and 4-Port FXO Network Interface Module

P-version status

P version; no functionality change from non-P version

Non-P version

P version; no functionality change from non-P version

P version; no functionality change from non-P version

Cisco IOS XE release

XE16.5 and above

XE3.13.4, XE3.14.3, XE3.15.1, XE3.16 and above

XE16.5 and above

XE16.5 and above

DSP design

Onboard DSP; no PVDM required

Onboard DSP; no PVDM required

Onboard DSP; no PVDM required

Onboard DSP; no PVDM required

Supported host

Cisco 4300 and 4400 Series ISR NIM slots

Cisco 4300 and 4400 Series ISR NIM slots

Cisco 4300 and 4400 Series ISR NIM slots

Cisco 4300 and 4400 Series ISR NIM slots

NIM-2FXSP and NIM-2FXS share the same two-port FXS, FXS-E and DID description, but NIM-2FXSP is the newer P hardware revision and needs IOS XE 16.5 or later, because on earlier releases the module boots but its analog ports do not appear in show voice port summary. Sites that must stay on a release older than 16.5 should order NIM-2FXS, which runs from IOS XE 3.13.4. Four station-side ports call for NIM-4FXSP, and a card that also terminates four FXO lines calls for NIM-2FXS/4FXOP. Cisco states the P versions have no functional change from the non-P versions.

Ordering Checklist

  • Supported hosts: Order for the NIM slots of Cisco 4300 and 4400 Series ISRs; the datasheet does not list Cisco 2900 or 3900 Series, so the module cannot be ordered for those routers.

Specifications

Parameter Specification Parameter Specification
Product ID NIM-2FXSP Product type FXS analog voice Network Interface Module
Cisco ordering description 2-Port Network Interface Module – FXS, FXS-E and DID Total ports 2 FXS/FXS-E/DID-capable voice ports
P-version note Created due to a new hardware component in manufacturing Functional relationship No functionality change from the non-P version
Analog interface role Station-side FXS service or DID incoming-call service ISR G2 comparison VIC3-2FXS/DID
Supported router family Cisco 4000 Series Integrated Services Routers Documented ISR series context Cisco 4300 and 4400 Series ISRs
Unsupported ISR family Not supported with Cisco 2900 and 3900 Series ISRs Cisco IOS XE release for this SKU XE16.5 and above
Voice package requirement Minimum Unified Communications technology package for voice applications DSP design Onboard DSP on the voice NIM family
Motherboard PVDM requirement No dedicated packet voice DSP module required on the router motherboard for this voice NIM family FXS endpoint connection role Direct connection to phones, fax machines, and key systems
DID connection role Off-premises DID connection from the central office for incoming PSTN calls DID caller ID note DID mode does not support caller ID
FXS feature notes FXS or DID functionality, configurable long loop ports, message waiting indicator, and cable detection FXS signaling options did delay-dial, did immediate, did loopStart, groundStart, or loopStart
Ring frequency options 20, 25, 30, or 50 Hz Call progress tone setting cptone locale under voice-port configuration
Voice-port configuration form voice-port slot/subunit/subslot Managed OIR restriction Managed OIR is not supported with active calls
OIR support FXS, FXO, E/M, and BRI NIMs can be inserted into supported Cisco 4000 Series ISR NIM slots without powering off the router Cabling note Straight-through 2-wire cable for NIM FXS and FXO port connections
Analog NIM jumper note No jumpers to set on NIM analog modules Network management Remote and local configuration, monitoring, and troubleshooting from Cisco IOS XE Software CLI

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    Product condition was new, not refurbished. Important distinction for our procurement.

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Questions & Answers

  • Which routers can host NIM-2FXSP?

    NIM-2FXSP fits the NIM slots of Cisco 4300 and 4400 Series ISRs. Cisco 2900 and 3900 Series ISRs do not support the module. The module has onboard DSP, so no motherboard PVDM is needed. Managed OIR is not supported with active calls.
  • Which Cisco IOS XE release does NIM-2FXSP need?

    NIM-2FXSP needs Cisco IOS XE 16.5 or later. On earlier releases the module boots, but its analog ports do not appear in show voice port summary. Voice use also needs at least the Unified Communications technology package, and no PVDM is required on the router motherboard.
  • Is NIM-2FXSP listed in the Catalyst 8300 datasheet?

    Yes. The Catalyst 8300 datasheet lists NIM-2FXSP among its analog voice NIMs in Table 7, together with NIM-4FXSP and the FXO and E/M NIMs. Confirm the Catalyst 8300 model in that table before ordering the two-port FXS module for a new router.
  • Does NIM-2FXSP support the clock-participate command?

    No. FXO and FXS NIMs, including NIM-2FXSP, do not support the clock-participate command, per the Cisco voice NIM datasheet. Do not plan on that command for clock sourcing from the analog ports. Use the router's own clock source for timing.
  • Which ring frequencies can be set on the ports of NIM-2FXSP?

    The FXS ports of NIM-2FXSP can be set to a ring frequency of 20, 25, 30 or 50 Hz. Match the setting to the attached phones or key system. The call progress tone is chosen with the cptone locale command in the voice-port configuration.
  • Does DID mode on NIM-2FXSP support caller ID?

    No. DID mode does not support caller ID on NIM-2FXSP. The two ports can serve FXS stations or DID incoming calls from the central office, but caller ID display needs an FXS port. Configure the port for the role the circuit requires.

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DataSheet Downloads

  • NIM-2FXSP Datasheet