• Cisco SM-X-72FXS 72-port FXS module with silver rack server hardware
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Cisco

Cisco SM-X-72FXS | 72‑port FXS analog voice service module | ISR 4000 high‑density telephony

SM-X-72FXS

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Description

Deliver dense analog voice connectivity on ISR 4000 platforms with 72 FXS ports for phones, fax machines, and analog devices. Ideal for hospitality, healthcare, and campus environments consolidating many analog endpoints into a single gateway. Supports standard analog signaling and integrates with IOS XE voice features.

Features

- Very high port density: 72 FXS in a single module
- Consolidates analog endpoints onto an IP voice platform
- Flexible country/region tone and impedance settings via IOS XE
- Scales branch or campus telephony without external gateways
- Centralized management and monitoring through the router

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

- Interfaces: 72x FXS analog ports
- Application: Analog phones, fax machines, modems, intercoms
- Platform: SM‑X service module for ISR 4000
- Signaling: Standard FXS loop‑start (country settings via IOS XE)
- Integration: IOS XE voice features and dial‑plan control
- Cabling: High‑density connectors with breakout to RJ‑11 via accessories
- DSP resources: Router‑resident DSP required for certain voice features
- Use cases: Hospitality blocks, dorms, healthcare wards, legacy analog consolidation

FAQs

Q: Do I need additional DSP resources?
A: Yes. Functions like conferencing, transcoding, and tone detection require appropriate DSP resources on the host router.

Q: What cabling is used for the 72 FXS ports?
A: The module uses high‑density connectors; breakout cables or patch panels (sold separately) provide RJ‑11 terminations.

Q: Can it be used with SIP trunks?
A: Yes. Deployed in an ISR 4000, it can integrate with SIP via IOS XE/CUBE while providing analog FXS lines to endpoints.

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