Call By Call (US PRI)

Last Updated : Aug 30, 2026 |
Navigation: System SettingsLineT1 ISDN Call by Call
Prolog information
Resource Id: line139
This tab is shown when the line Provider is set to AT&T. Settings in this tab are only used when calls are routed via a channel which has its Service set to Call by Call.
It allows short codes to be created to route calls to a different services according to the number dialed. Call By Call reduces the costs and maximizes the use of facilities. Call By Call chooses the optimal service for a particular call by including the Bearer capability in the routing decision. This is particularly useful when there are limited resources.
These settings must be edited offline. To enter offline editing, select Menu Bar Current User IconOffline Mode.
Field
Description
Short Code
The number which results from the application of the rules specified in the User or System Short code tables and the Network Selection table to the number dialed by the user.
Number
The number to be dialed to line.
Bearer
Default = Any
The type of traffic carried by the channel. The options are:
  • Voice
  • Data
  • Any
Service
Default = AT&T
The service required by the call. The options are:
  • Call by Call
  • SDN (inc GSDN)
  • MegaCom 800
  • MegaCom
  • Wats
  • Accunet
  • ILDS
  • I800
  • ETN
  • Private Line
  • AT&T Multiquest