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Cisco

Cisco VIC3-4FXS-DID | 4x FXS/DID analog ports (RJ-11) | Caller ID, T.38 fax (IOS/DSP dep.) | Echo cancel | VIC3 form factor

VIC3-4FXS-DID

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Description

Add four FXS/DID analog ports to a compatible voice gateway router to connect analog phones, fax machines, or PBX trunks with direct-inward-dial capability. RJ-11 interfaces provide battery feed and ring generation for FXS endpoints, with caller ID support and T.38 fax relay or G.711 pass-through (IOS/DSP dependent). Third‑generation VIC3 hardware offers improved timing and echo performance for reliable enterprise voice deployments.

Features

- Four-port FXS/DID density for branch voice gateways
- Direct-inward-dial capability for analog trunking
- Caller ID and supervisory signaling for reliable PSTN/PBX integration
- T.38 fax relay and pass-through options for legacy fax support
- VIC3 hardware with improved echo and timing characteristics

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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FAQs

Technical Specifications

FAQs

Q: What is the difference between FXS and DID on this card?
A: FXS ports connect analog endpoints (phones/faxes) and provide battery and ring voltage. DID allows analog trunks from a telco/PBX to deliver direct-inward-dial numbers to the gateway.

Q: Do I need DSP resources for voice and fax features?
A: Yes, many features such as transcoding, echo cancellation, and T.38 fax relay require available DSP (PVDM) resources on the host router.

Q: Is caller ID supported?
A: Yes, FSK caller ID is supported where enabled and regionally compatible; ensure IOS and regional settings are configured.

Q: What software license is required?
A: A voice-capable IOS image/feature set is typically required; verify the host router’s IOS and licensing for FXS/DID and T.38 features.

Q: Can I mix this with other voice modules?
A: Yes, multiple VIC/VWIC modules can usually be installed if the chassis has available slots and DSP resources.

Technical Specifications

- Interface type: Voice Interface Card (VIC3)
- Ports: 4x FXS/DID analog ports
- Connectors: RJ-11
- FXS features: Battery feed, ring generation, on/off-hook supervision
- DID signaling: immediate/wink start (gateway/IOS dependent)
- Caller ID: FSK CLIP support (region dependent)
- Fax support: T.38 fax relay and G.711 pass-through (IOS/DSP dependent)
- Echo cancellation: ITU-T G.168 class (DSP dependent)
- Use cases: analog phones, fax machines, modems, PBX trunks with DID
- Power: draws from host router (no external PSU)
- Compatibility: select routers supporting VIC3 slots (check platform/IOS)

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