Cisco VIC3-2FXS/DID Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 2-Port Generation 3 Dual-Mode FXS/DID Voice Interface Card
Spare SKU:VIC3-2FXS/DID=
Naming Breakdown
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VIC3: Voice Interface Card, Generation 3
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2: Two configurable analog RJ11 ports
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FXS/DID: Dual-mode software-selectable Foreign Exchange Station / Direct Inward Dial interface
Core Product Positioning
The Cisco VIC3-2FXS/DID is a third-generation pluggable analog voice mezzanine daughtercard for Cisco multiservice integrated routers. Each port supports mutually exclusive operation modes: FXS mode for connecting analog end devices, or DID trunk mode for receiving routed inbound calls from PSTN central offices. This flexible dual-purpose voice card delivers cost-effective analog telephony termination for branch VoIP gateways, Survivable Remote Site Telephony (SRST), Cisco Unified Communications Manager Express (CUCME), and hybrid TDM-IP voice migration deployments.
2. Hardware Compatibility & Supported IOS Releases
Supported Host Platforms
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Cisco 2800 Series: 2801, 2811, 2821, 2851
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Cisco 3800 Series: 3825, 3845
Must be installed inside compatible voice network modules: NM-HD-1V, NM-HD-2V, NM-HD-2VE, NM-HDV2
Unsupported Platforms
2600XM, 3700 series, ISR 2900/3900 G2 (requires dedicated adapter), ISR 4000 series, Catalyst switches.
Minimum Supported IOS Version
IOS 12.4(15)XZ; Validated stable releases: 12.4T, 15.0M, 15.1M, 15.2(4)M
3. Physical & Electrical Specifications
Form Factor
VIC mezzanine daughterboard;non-hot-swappable. Full router power cycle required for installation or removal.
Interfaces
2 × RJ-11 dual-mode FXS/DID analog voice ports
Analog Line Characteristics
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Supplies -48V DC line battery and AC ringing voltage
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Supports Caller ID transmission, polarity reversal
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Max 1 REN (Ringer Equivalence Number) per port
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Loop-start analog signaling for telephones, fax machines
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Receives incoming dialed digits from PSTN CO trunks
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Inbound-call only operation (does not support outbound dialing)
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Does not supply ring voltage or line battery
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Caller ID is not supported under DID operation
Typical Power Consumption
Environmental Operating Parameters
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Operating Temperature: 0°C to 40°C (32°F – 104°F)
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Storage Temperature: -40°C to 70°C (-40°F – 158°F)
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Relative Humidity: 5% – 85% non-condensing
4. Supported Features & Functional Capabilities
Voice & Fax Services
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Analog voice termination for VoIP gateway routing
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T.38 Fax Relay, Fax Passthrough and Modem Passthrough
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ITU-T compliant acoustic echo cancellation, VAD, CNG
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Dynamic jitter buffering (DSP resources required on host voice module)
Unified Communications Features
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Survivable Remote Site Telephony (SRST) local calling during WAN failures
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Cisco Unified Communications Manager Express (CUCME)
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DID number routing for direct PSTN inbound dialing to internal extensions
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Toll bypass voice connectivity to reduce PSTN long-distance charges
QoS & Transport Interoperability
Integrates with Cisco IOS QoS mechanisms including LLQ and RSVP to prioritize real-time voice over IP, Frame Relay and ATM WAN links.
Management & Diagnostics
Complete configuration and monitoring via Cisco IOS CLI
Voice port loopback testing, real-time voice call debugging, event logging via Syslog and SNMP v1/v2c/v3
5. Typical Enterprise Deployment Scenarios
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Small branch VoIP gateway mixing analog telephone connections and PSTN DID trunk circuits
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SRST/CUCME deployments supporting local analog stations and direct inbound DID calling
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Hybrid IP-TDM telephony migration combining FXS device ports and DID PSTN trunks
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Remote office analog fax termination with optional DID inbound service
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Low-density gateway deployments where port usage alternates between station and trunk functions
6. Regulatory & Compliance Certifications
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Safety Standards: UL 60950-1, CSA C22.2 No.60950-1, IEC/EN 60950-1
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EMC Compliance: CE Mark, FCC Part 15 Class A, ICES-003 Class A, VCCI Class A
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Environmental Directives: EU RoHS 2.0 compliant, WEEE compliant
7. Standard Factory Package Contents
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Cisco VIC3-2FXS/DID 2-Port Generation 3 FXS/DID Voice Interface Card
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Hardware installation guide
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Safety and regulatory documentation
End-of-Life Status
The VIC3 voice interface card series has reached Cisco End-of-Sale (EoS). New original hardware manufacturing has been discontinued with limited software maintenance support. Recommended migration: EHWIC-VA analog voice modules for ISR Generation 2 routers.
UNSPSC Classification Code
43222608 – Cisco VIC3-2FXS/DID 2-Port Generation 3 Dual-Mode FXS/DID Voice Interface Card for Cisco 2800/3800 multiservice Integrated Services Routers, offering software-selectable analog station and DID trunk interfaces for flexible low-density branch VoIP and hybrid unified communications deployments.
Hardware Warranty
Brand-new original modules carry a 1-year limited Cisco factory warranty covering manufacturing defects. Warranty terms for refurbished hardware follow reseller contractual agreements.
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