16 3Com VCX V7111 VoIP SIP Gateways User ManualVCX V7111 Key Features High quality voice, data, and fax over IP networks. The VCX V7111 24FXS supports up to 24 analog telephone loop start FXS ports asshown in Figure 1 on page 14. The VCX V7111 8FXS and 8FXO supports up to eight analog telephone loop start FXSor FXO ports as shown in Figure 2 on page 14. The VCX V7111 4FXS and 4FXO supports up to four analog telephone loop start FXS orFXO ports as shown in Figure 3 on page 14. The 2FXS supports up to two analog telephone loop start FXS ports, shown in Figure 4on page 14. Connected to the IP network using a 10/100 Base-T Ethernet interface. Coders include: G.711, G.723.1, G.726, G.727, G.729A, and NetCoder from 6.4 through8.8 Kbps, selectable per channel. T.38 Fax with superior performance (round trip delay up to 9 seconds). Compliant with SIP (RFC 3261). Life Line, connected to the unused pins on port 4 (or port 2 for the 2FXS), with a relay toan analog line, even if the VCX V7111 FXS is powered off. LEDs on the front and rear panels provide information on the operating Gateway statusand of the network interface. Restart button on the front panel restarts the VCX V7111 Gateway. The VCX V7111 8FXS or 8FXO compact, rugged enclosure providing up to eight analogRJ-11 ports within a compact housing of only one-half of a 19-inch rack unit, 1 U high(1.75" or 44.5 mm). The VCX V7111 24FXS 19-inch, 1 U rugged enclosure provides up to 24 analog FXSports, using a single 50 pin Telco connector. Mounting option of installing two VCX V7111 4FXS, 4FXO, 8FXS, or 8FXO Gateways ina single 19-inch rack shelf, one U high (1.75" or 44.5 mm).
