Cisco

Cisco VIC-4FXO-M2/M3 | 4-port FXO voice interface card, RJ-11 analog trunks, loop/ground start, M2/M3 platform compatibility, requires PVDM DSP, ISR expansion

SKU:VIC-4FXO-M2/M3

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Description

4-port FXO voice interface card for analog PSTN trunk connectivity on voice-enabled ISR routers. M2/M3 hardware compatibility variant for supported platforms, providing loop-start/ground-start signaling, caller ID, and tone detection when paired with router DSP resources. Suitable for PSTN access and analog fallback.

Features

- Four FXO ports for dense analog trunk connectivity
- M2/M3-compatible hardware for select ISR platforms
- Flexible loop-start and ground-start signaling
- Caller ID support and reliable tone detection
- Integrates with router DSPs for advanced voice features

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

Technical Specifications

- Ports: 4x FXO analog trunks
- Hardware variant: M2/M3 compatibility
- Connectors: 4x RJ-11
- Signaling: Loop-start, ground-start
- Telephony features: Caller ID (FSK), call progress tone detection
- DSP requirement: Requires router PVDM resources for media/codec
- Echo control: DSP-based echo cancellation (router-dependent)
- Compatibility: Select Cisco ISR platforms supporting M2/M3 FXO VICs
- Hot-swap: No (install with power off)
- Use cases: PSTN access, analog backup, legacy gateway interconnects

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