40 3Com® VCX V7111 VoIP Gateway User GuideFigure 15 V7111 24 PORT with Brackets for Rack InstallationCabling the V7111 24 PORTCable your V7111 24 PORT according to each section of Table 12. For detailed informationon the V7111 24 PORT rear panel connectors, see V7111 24 PORT Rear Panel.Table 12 V7111 24 PORT Cables and Cabling ProcedureCable Cabling ProcedureProtectiveearthing strapConnect an earthed strap to the chassis protective earthing screw (6-32 UNC screw) andfasten it securely according to the safety standards.RJ-45 EthernetcableConnect the Ethernet connection on the V7111 24 PORT directly to the network using acrossover RJ-45 Ethernet cable. For connector pinouts, see Figure 16.Note that when assigning an IP address to the V7111 24 PORT using HTTP (Step 1 inAssigning an IP Address Using HTTP), you may be required to disconnect this cable and re-cable it differently.50-pin Telco cable(V7111 24 PORTdevices only).An Octopus cableis not includedwith the V7111 24PORT package.See the V7111 24 PORT Safety Notice below.1 Wire the 50-pin Telco connectors according to the pinouts in Figure 17 and Figure 18.2 Attach each pair of wires from a 25-pair Octopus cable to its corresponding socket onthe MDF Adaptor Blocks rear.3 Connect the wire-pairs at the other end of the cable to a male 50-pin Telco connector.4 Insert and fasten this connector to the female 50-pin Telco connector on the V7111 24PORT rear panel (labeled Analog FXS Lines 1-24).5 Connect the telephone lines from the Adaptor Block to a fax machine, modem, ortelephones by inserting each RJ-11 connector on the 2-wire line cords of the POTSphones into the RJ-11 sockets on the front of an MDF Adaptor Block as shown in Figure18.RS-232 serialcableFor detailed information on connecting the V7111 24 PORT RS-232 port to your PC, seeConnecting the V7111 24 PORT RS-232 Port to Your PCAC Power cable Connect the V7111 24 PORT power socket to the mains.
