AT&T 4.1 Telephone User Manual


 
The options you should consider when setting up your system to work effectively
behind a PBX or Centrex system are listed below.
To set up your equipment to work properly with PBX or Centrex services,
set Recall Timer Duration (#107) to match the setting used by your PBX
or Centrex system (usually “18” or 450 msec. for a PBX system; “32” or
800 msec. for a Centrex system).
For extensions with standard phones, set Automatic Line Selection to
“intercom first.” This enables standard phones to access equipment
features, including intercom calling.
When you store numbers outside the PBX or Centrex system for System
Speed Dialing or Auto Dialing, include the PBX or Centrex system
dial-out code (if any), followed by a pause, in the stored number.
NOTE:
If you want to assign dialing restrictions to specific extensions, use the PBX or
Centrex dialing restrictions. Refer to the PBX or Centrex documentation for
more information.
2-4 Customizing Your System