Operating your IP Phone 1220140Using Centrex ServicesYou can use a few Centrex services from your IP phone. Contact yoursystem administrator to determine if the following features are available:• “Using Centrex or Exchange Line Switchhook Flash” on page 140• “Using AutoDial Transfer” on page 140Using Centrex or Exchange Line Switchhook FlashUse the Centrex or Exchange Line Switchhook Flash feature during anactive call to use Call Transfer or Three-Way Calling.Using AutoDial TransferUse the AutoDial Transfer feature to transmit digits to the Central Officeafter a Trunk Switchhook Flash. You must be on a Central Office/Exchange (CO) trunk call from, or connected to, a CO that offers Centrexor exchange line-type features.1. During a call, press the CentrexSHFkey.You hear a special dial tone.2. Dial the codes for your custom Centrexfeature.3. Press the Goodbye key to end the call.1. Press the CentrexSHF key, and wait foran interrupted dial tone.CentrexSHF(Goodbye)CentrexSHF
