Cisco VIC2-4FXS Full Official Product Description
1. Part Number & Naming Definition
Official Full Name
Cisco 4-Port Generation 2 Foreign Exchange Station Voice Interface Card
Spare SKU:VIC2-4FXS=
Naming Breakdown
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VIC2: Voice Interface Card, Generation 2
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4: Four physical analog voice ports
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FXS: Foreign Exchange Station analog interface
Core Product Positioning
The Cisco VIC2-4FXS is a second-generation pluggable analog voice mezzanine daughterboard for Cisco multiservice integrated routers. FXS ports supply -48V DC line battery, dial tone, AC ringing voltage and analog signaling to directly power and connect analog end devices. This module enables analog voice and fax services over IP WAN infrastructure, supporting VoIP gateways, SRST, Cisco Unified Communications Manager Express (CUCME), toll bypass and branch-site analog telephony deployments. It interfaces directly with standard analog telephones, fax machines and analog station ports of legacy PBX systems.
2. Hardware Compatibility & Supported IOS Releases
Supported Host Platforms
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Cisco 1760, 2600XM, 2691
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Cisco 2800 Series: 2801, 2811, 2821, 2851
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Cisco 3700 Series: 3725, 3745
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Cisco 3800 Series: 3825, 3845
Must be mounted inside compatible voice network modules: NM-HD-1V, NM-HD-2V, NM-HD-2VE, NM-HDV2
Unsupported Platforms
Legacy non-XM 2600 routers, ISR 2900/3900 G2 (requires dedicated adapter), ISR 4000 series, Catalyst switching platforms.
Minimum Supported IOS Version
IOS 12.3(7)T; Validated stable releases: 12.4T, 15.0M, 15.1M, 15.2(4)M
3. Physical & Electrical Specifications
Form Factor
VIC mezzanine daughter card;non-hot-swappable. Router power cycle required for installation and removal.
Interfaces
4 × RJ-11 FXS analog voice ports
Analog Line Characteristics
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-48V DC nominal line battery power supply
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Configurable AC ringing voltage generation for analog terminals
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Supports Caller ID transmission
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Polarity reversal detection for call metering and billing
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Maximum Ringer Equivalence Number (REN): 1 REN per port
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Support for loop-start and ground-start analog signaling modes
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 Codecs & Key Functional Features
Voice & Fax Services
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Voice over IP (VoIP) call routing and POTS voice termination
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T.38 Fax Relay, Fax Passthrough and Modem Passthrough
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ITU-T compliant echo cancellation, Voice Activity Detection (VAD), Comfort Noise Generation (CNG)
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Dynamic jitter buffer management (DSP resources required on host voice module)
Unified Communications Features
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Survivable Remote Site Telephony (SRST) resilient local calling during WAN outages
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Cisco Unified Communications Manager Express (CUCME)
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Toll bypass voice connectivity to reduce PSTN long-distance charges
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Calling Line Identification (Caller ID) support
QoS & Transport Interoperability
Works with Cisco IOS QoS mechanisms including LLQ and RSVP to prioritize real-time voice traffic over IP, Frame Relay and ATM WAN links.
Management & Diagnostics
Full configuration, monitoring and troubleshooting 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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Medium-density branch VoIP gateway connecting analog phones and multi-function fax devices
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SRST/CUCME deployments to provide backup analog voice services upon WAN failure
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Hybrid IP-TDM telephony migration connecting legacy PBX analog station ports
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Distributed office Fax over IP transport for multiple analog fax equipment
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Small-to-medium business on-premises analog POTS voice termination
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 VIC2-4FXS 4-Port Generation 2 FXS Voice Interface Card
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Hardware installation guide
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Safety and regulatory documentation
End-of-Life Status
The complete VIC2 voice interface card family has reached Cisco End-of-Sale (EoS). New original hardware production is discontinued with limited software maintenance support. Recommended migration: EHWIC-VA series analog voice modules for ISR G2 routers.
UNSPSC Classification Code
43222608 – Cisco VIC2-4FXS 4-Port Generation 2 FXS Voice Interface Card for Cisco 2800/3800 multiservice Integrated Services Routers, providing analog station interfaces for analog telephones, fax hardware and legacy PBX integration for medium-density branch VoIP and 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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