[shortdesc] VoIP phone adapter, GigE, Analog ports: 24, 1U, Rack-mountable [/shortdesc] [properties] Brand Cisco Model VG310 SKU VG310 Product Type Analog Voice Gateway Form Factor 1RU (Rack-mountable, Desktop, Wall-mountable) Analog Voice Ports 24 FXS ports (via 1 RJ-21 connector) [/properties] [specifications] Ethernet Ports 2 x 10/100/1000BASE-T Gigabit Ethernet (RJ-45) Expansion Slots 1 x EHWIC slot Internal DSP Support PVDM3 slot (supports PVDM3 modules) Console & Management Ports 1 x RJ-45 Serial Console, 1 x Mini-USB Type B Console, 1 x RJ-45 AUX, 1 x USB Type A Memory Support CompactFlash slot, 1 GB standard memory Voice Codecs Supported G.711, G.729a Dimensions (H x W x D) 1.8 in x 17.5 in x 13.5 in (1RU) [/specifications] Cisco VG310 Voice Gateway The Cisco VG Series Analog Voice Gateways are Cisco IOS software-based. The Cisco VG310 is a 24-port gateway. The gateway connects analog phones, fax machines, modems, and speakerphones to an enterprise IP voice system, so you can use them as extensions to your Cisco or third-party IP call-control system. Having these devices tightly integrated with the IP-based phone system is advantageous for increased manageability, scalability, and cost-effectiveness. The Cisco VG Series supports high to low concentrations of analog voice ports for modem calls, fax calls, and analog supplementary services.