104 CHAPTER 5: INSTALLING DEVICESConfiguring Devicesfor VLAN OperationThis section contains instructions on how to configure each VCX devicefor VLAN operation.The V7111 and V7122 gateways cannot be configured to operate on aVLAN.The Complement Attendant Software cannot be configured to operateon a VLAN.TelephonesTo configure any 3Com telephone for VLAN operation:1 Press the PROGRAM button.2 Press 6 (VCX Cnfig Menu).3 Press 2 (Set VLAN Confg).4 Press 1 (Enable VLANs).5 Enter the ID number of the VLAN on which you want the telephone tooperate.6 Press #.Complement Attendant Software (CAS)You cannot configure the CAS application for VLAN operation.3105 Attendant ConsoleTo configure a 3Com 3105 Attendant Console you must have an adapterthat connects to a male 9-pin (DB9) serial port on your PC and has anRJ-45 port that accepts an Ethernet cable. This table shows the pinouts:Comm Port Pin # Function1 No Connection2 DCD/DTR3 DCD/DTR4 GND5 RXD6 TXD7 CTS8 RTS