NIM-4FXS – 4-Port FXS Voice – Analog NIM – Cisco 4000 ISR

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NIM-4FXS Description

The NIM-4FXS is a Cisco 4000 Series ISR analog voice network interface module for branch routers that connect phones, fax machines and key systems. The module has four FXS/FXS-E/DID-capable voice ports and onboard DSP that needs no PVDM on the router motherboard, and it fits NIM slots on Cisco 4300 and 4400 Series ISRs. DID mode does not support caller ID, and Cisco 2900 and 3900 Series ISRs cannot host the module.

Quick Specs

Parameter

Specification

Product ID

NIM-4FXS

Product type

4-port FXS Network Interface Module

Cisco ordering description

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

Total ports

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

Analog interface role

Foreign Exchange Station station-side service or DID incoming-call service

ISR G2 comparison

VIC3-4FXS/DID

Supported router context

Cisco 4000 Series ISR NIM slots; Cisco 4300 and 4400 Series voice NIM configuration context

Cisco IOS XE release for this SKU

XE3.13.4, XE3.14.3, XE3.15.1, XE3.16 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

Weight

0.44 lb (200 g)

Application Scenarios

Analog Stations At A Branch

A branch office with a Cisco 4300 or 4400 Series ISR can connect analog phones, fax machines and key systems directly to the four FXS ports, and the onboard DSP handles the voice processing.

DID Lines From The Central Office

A site that receives DID numbers from the central office can terminate them on the DID-capable ports for incoming PSTN calls, with the limit that DID mode carries no caller ID.

Product Comparison

Parameter

NIM-4FXS

NIM-2FXS

NIM-4FXSP

NIM-2FXS/4FXO

Voice ports

4 FXS/FXS-E/DID-capable

2 FXS/FXS-E/DID-capable

4 FXS/FXS-E/DID-capable

2 FXS/FXS-E/DID-capable and 4 FXO

Port function

Station-side FXS or DID incoming-call service

Station-side FXS or DID incoming-call service

Station-side FXS or DID incoming-call service

Station-side FXS or DID plus line-side FXO

Supported platforms

Cisco 4300 and 4400 Series ISRs

Cisco 4300 and 4400 Series ISRs

Cisco 4300 and 4400 Series ISRs

Cisco 4300 and 4400 Series ISRs

Unsupported platforms

Cisco 2900 and 3900 Series ISRs

Cisco 2900 and 3900 Series ISRs

Cisco 2900 and 3900 Series ISRs

Cisco 2900 and 3900 Series ISRs

Cisco IOS XE release

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

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

XE16.5 and above

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

NIM-4FXS and NIM-4FXSP carry the same four FXS/FXS-E/DID-capable ports, but NIM-4FXS is the original hardware that runs on IOS XE 3.13.4, 3.14.3, 3.15.1 and 3.16 and later, while the P revision needs XE 16.5 or later. A router on an earlier release has to take NIM-4FXS, because on those releases the P module boots yet shows no analog voice ports. Sites that need only two station lines can order NIM-2FXS, which has two FXS/FXS-E/DID-capable ports. Where FXS stations and FXO trunks must share one slot, NIM-2FXS/4FXO provides two FXS-class ports plus four FXO ports.

Ordering Checklist

  • Router hosts: Order for Cisco 4300 and 4400 Series ISR NIM slots. NIM-4FXS installs only in a 4000 Series ISR NIM slot, so 2900 and 3900 Series routers cannot take it.
  • SM-X slots: Add a NIM carrier card when the host uses an SM-X slot; it converts the slot to a NIM slot for one single-wide or double-wide NIM. Without it, NIM-4FXS cannot be installed.

Specifications

Parameter Specification Parameter Specification
Product ID NIM-4FXS Product type FXS analog voice Network Interface Module
Cisco ordering description 4-Port Network Interface Module – FXS, FXS-E and DID Total ports 4 FXS/FXS-E/DID-capable voice ports
Analog interface role Station-side FXS service or DID incoming-call service ISR G2 comparison VIC3-4FXS/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 XE3.13.4, XE3.14.3, XE3.15.1, XE3.16 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 Voice-port configuration form voice-port slot/subunit/subslot
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 Ring cadence setting Predefined or user-defined ring cadence under FXS voice-port configuration
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 Managed OIR restriction Managed OIR is not supported with active calls
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 Weight 0.44 lb (200 g)

Quality Certifications

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    Product matches the description perfectly. Happy with the purchase.

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    Quick and clear pre-sales communication made the buying decision easy.

    Samwise Gamgee
    Posted on 10/09/2024
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    Honest folks. Package was wrapped up tight.

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    Shipped to Philippines via express. Good handling.

Questions & Answers

  • Can NIM-4FXS be installed in an SM-X slot on a Cisco 4300 or 4400 Series ISR?

    Yes, with a NIM carrier card. The card converts the SM-X slot to a NIM slot for one single-wide or double-wide NIM. NIM-4FXS otherwise installs only in NIM slots, and Cisco 2900 and 3900 Series ISRs cannot host it.
  • Which Cisco IOS XE release does NIM-4FXS need?

    NIM-4FXS needs Cisco IOS XE 3.13.4 or later, with documented releases XE3.13.4, XE3.14.3, XE3.15.1 and XE3.16 and above. Voice use also needs at least the Unified Communications technology package, and no PVDM is required on the router motherboard.
  • Does NIM-4FXS support the clock-participate command?

    No. NIM-4FXS does not support the clock-participate command, and the same limit applies to every FXO and FXS NIM in this voice module family. The module uses its own onboard DSP, so do not plan on configuring router clock participation for it in the voice gateway design.
  • Is NIM-4FXS affected by field notice FN64321 or the IOS XE 16.5 requirement?

    No. FN64321 covers only the P-suffix hardware NIM-2FXSP, NIM-4FXSP and NIM-2FXS/4FXOP, which need Cisco IOS XE 16.5 or later. NIM-4FXS is not affected and keeps working from XE 3.13.4, so a router on an older image needs no upgrade for this module.
  • Which FXS features do the four ports of NIM-4FXS offer?

    Each NIM-4FXS port can run as FXS or as DID. The data sheet lists long-loop support, message waiting indication, line detection, battery polarity reversal and caller ID generation. DID mode accepts incoming calls only and carries no caller ID, so choose the port mode per line.
  • Which routers and slots can host NIM-4FXS?

    NIM-4FXS fits the NIM slots of Cisco 4300 and 4400 Series ISRs. In an SM-X slot it needs a NIM carrier card first. Cisco 2900 and 3900 Series ISRs cannot host it, and voice use needs the Unified Communications technology package on the router.

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DataSheet Downloads

  • NIM-4FXS Datasheet