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You can use a few Centrex services from your IP phone. Contact your 
system administrator to determine if the following features are available: 

•

•

Use the Centrex or Exchange Line Switchhook Flash

feature during an 

active call to use Call Transfer or Three-Way Calling.

Use the

AutoDial Transfer

feature to transmit digits to the Central Office 

after a Trunk Switchhook Flash. You must be on a Central Office/
Exchange (CO) trunk call from, or connected to, a CO that offers Centrex 
or exchange line-type features. 

1.

During a call, press the 

 

key. 

You hear a special dial tone.

2.

Dial the codes for your custom 

feature.

3.

Press the 

key to end the call.

1.

Press the 

 key, and wait for 

an interrupted dial tone.

CentrexSHF

(Goodbye)

CentrexSHF