Cisco VG400-8FXS – High-Density Analog Voice Gateway for Modern IP Telephony
The Cisco VG400-8FXS is a Cisco IOS XE–based analog voice gateway that connects up to eight analog phones, fax machines, or modems to a Cisco Unified Communications Manager (CUCM) or CUCM Express environment. It lets enterprises, ISPs, and integrators keep their existing analog endpoints while migrating to a modern IP telephony backbone — with 100% investment protection. Built with an on-board DSP, it delivers toll-quality voice without requiring a separate PVDM module. This unit is brand new in a factory-sealed box, ideal for resellers and integrators standardizing on the VG400 platform.
Key Features & Benefits
- 8 FXS Ports – Connect up to eight analog phones, fax machines, or modems on a single chassis, ideal for medium-density analog deployments.
- On-Board DSP – Delivers echo cancellation up to 128 ms echo-tail with no dedicated PVDM module required, lowering total cost and complexity.
- FXS-E Extended Loop Support – All 8 ports support long loops up to 11,000 ft (26 AWG), higher 35 mA loop current, and 65 Vrms ringing for specialty phones.
- Cisco IOS XE Manageability – Uniform CLI and SNMPv3 give network teams the same operational model as their ISR fleet.
- T.38 Fax & Modem Support – Reliable fax transport with T.38 Fax Relay, Fax Pass-Through, and V.150.1 modem relay across the IP network.
- Gigabit Uplinks – Up to two 10/100/1000 Ethernet ports plus 4 GB DDR3 and USB 2.0 for flexible, high-throughput deployment.
Technical Specifications
| Specification | Details |
|---|---|
| Model / Part Number | VG400-8FXS |
| Brand | Cisco |
| Product Type | Analog Voice Gateway (ATA) |
| Analog Ports | 8 x FXS (RJ-11), ports 0-7 |
| FXS-E Extended Loop Ports | 8 (all ports) |
| Operating System | Cisco IOS XE 16.10.1 or later |
| Processor | High-performance multicore processor |
| Memory (DRAM) | 4 GB DDR3 SDRAM (fixed on board) |
| Ethernet | Up to two 10/100/1000 (Gigabit) LAN ports |
| USB | 1 x USB 2.0 (Type A) |
| Voice Protocols | SCCP, SIP, H.323v4, MGCP, RTP, SRTP |
| Fax / Modem | T.38 Fax Relay, Fax Pass-Through, V.150.1 Modem Relay & Pass-Through |
| Codecs | G.711, G.729a |
| Echo Cancellation | On-board DSP, up to 128 ms echo-tail (no PVDM required) |
| Call Manager Support | Cisco Unified CM 12.0.1SU2+ / CUCM Express |
| FXS Loop Length | Up to 11,000 ft (3400 m) with 26 AWG (long-loop / FXS-E) |
| Ring Voltage | 54 Vrms (short loop) / 65 Vrms (long loop) |
| AC Input | 100-240 VAC auto-ranging, 50-60 Hz, 1.5-0.6 A |
| Power Consumption | 55 W |
| Dimensions (H x W x D) | 1.72 x 12.7 x 10 in (43.7 x 322.6 x 254 mm) |
| Weight | 6.75 lb (3.06 kg) |
| Regulatory | UL/IEC 60950-1, FCC Part 15, CE, VCCI |
| Condition | New – Factory Sealed |
Official Datasheet
Download the official Cisco VG400 datasheet
