Cisco VG204 Cisco voice gateway
Brand: Cisco | Category: Accessories & Components
SKU: CSC-VG204 | Part #: VG204 | MPN: VG204
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About the Cisco VG204 Cisco voice gateway
Cisco Unified Communications Manager (UCM) and Webex Calling environments rely on the VG204 to bridge analog telephony infrastructure into modern IP-based voice networks. The Cisco VG204 voice gateway is engineered as a compact, fixed-configuration desktop appliance that delivers reliable analog-to-IP conversion for enterprises transitioning legacy phone systems to unified communications platforms.
Network engineers and IT procurement teams deploying hybrid voice environments will find the VG204 (part number VG204) essential for maintaining analog endpoint connectivity. This Cisco VG200 Series voice gateway provides 4 x FXS (Foreign Exchange Station) analog interface ports for standard telephone lines, paired with 1 x RJ-45 Fast Ethernet (10/100BASE-T) network connectivity. The gateway supports SIP signaling protocol and delivers voice codec flexibility with G.711 (a-law and mu-law) and G.729a compression, ensuring compatibility across diverse call control environments. Advanced fax support via T.38 fax relay and fax pass-through preserves critical document transmission capabilities. Analog feature support includes Caller ID, on-hook/off-hook detection, and hook flash signaling using loop-start configuration. Management is delivered through Cisco IOS CLI, SNMP, and a web-based GUI for streamlined operations. The appliance runs Cisco IOS Software and operates reliably in temperatures from 0°C to 40°C (32°F to 104°F) with humidity tolerances of 10% to 85% non-condensing. Power is supplied via external AC power adapter for flexible deployment.
Deployment Scenarios
- Branch office analog phone line termination with centralized UCM call control
- Fax server integration for T.38 relay and legacy fax machine connectivity
- Webex Calling hybrid deployments requiring analog endpoint preservation
- Desktop-based analog gateway for small departmental PBX migration
- Analog trunk line consolidation in multi-site enterprise networks
Contact Omnixon Global to request a detailed RFQ for the VG204 and enterprise licensing options.
Technical Specifications
| Brand | Cisco |
| Category | Accessories & Components |
| SKU | CSC-VG204 |
| Part Number | VG204 |
| Condition | New |
| Interface | SIP |
| Manufacturer Part Number | VG204 |
| Product Series | VG200 Series Voice Gateways |
| Analog Interface Ports | 4 x FXS (Foreign Exchange Station) |
| Network Interface | 1 x RJ-45 Fast Ethernet (10/100BASE-T) |
| Supported Signaling Protocols | SIP |
| Supported Voice Codecs | G.711 (a-law and mu-law), G.729a |
| Fax Support | T.38 fax relay, fax pass-through |
| Call Control Compatibility | Cisco Unified Communications Manager (UCM), Webex Calling |
| Operating System | Cisco IOS Software |
| Management Interfaces | Cisco IOS CLI, SNMP, web-based GUI |
| Analog Signaling Type | Loop-start |
| Analog Features | Caller ID, on-hook/off-hook detection, hook flash |
| Form Factor | Desktop / compact fixed-configuration |
| Power Input | External AC power adapter |
| Operating Temperature | 0°C to 40°C (32°F to 104°F) |
| Humidity | 10% to 85% non-condensing |
Frequently Asked Questions about Cisco VG204 Cisco voice gateway
What does the Cisco VG204 Cisco voice gateway do?
The Cisco VG204 Cisco voice gateway is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.