Primary Rate Interface (PRI) and T1 Feature

Considerations and Constraints

Incoming Calls - PRI

When an incoming call is given routing-by-dial-plan treatment, the green LED associated with the appearance of the line lights steadily; the LED does not flash to indicate that the line/trunk is ringing. When an incoming call is on a Personal Line, the green LED associated with the line lights steadily, and ringing on an SA button occurs. The LED does not flash to indicate that the line/trunk is ringing.

Routing by dial plan requires programming of the Dial Plan Routing Table and of the B-channel group (PRI only) or extension to be routed by dial plan.

Call Management System (CMS) does not support routing by dial plan.

Routing by dial plan information appears on 4400-Series and MLX display telephones.

If the number for an incoming call given routing by dial plan treatment is not found, the call is sent to the invalid number destination for DID calls. This can be a dial plan extension number or fast busy tone. If it is a fast busy tone, however, the call is rejected and the network applies an intercept tone.

A PRI line that has been programmed for routing by dial plan should not be programmed for Remote Access or Shared System Access.

Topics
  Description
 
  Called Party Nunber (CdPN)
Calling Party Number (CPN)
Lines / Trunks
PRI
T1
DS1 Facility Options
Type of Service
Framing Format
Line Coding
Channel Service Unit
  Line Compensation
Signaling Mode
Tandem PRI Trunks
Tandem PRI Trunk Programming
PRI Programnming Options
PRI Programnming Options - PRI Telephone Number
PRI Programnming Options - Network Services Supported
PRI Programnming Options - Copy Telephone Number to Send
PRI Programnming Options - Telephone Number to Send
PRI Programnming Options - Test Telephone Number
  PRI Programnming Options - Timers and Counters
PRI Programnming Options - Terminal Equipment Identifier (TEI)
PRI Call Processing
Incoming Calls
Outgoing Calls
Network Selection Table
Call-by-Call Services Table
Station Identification - Automatic Number Identification
T1 Programming Options
T1 Programming Options - T1 Tie Trunk Connections
T1 Programming Options - T1 Routing by Dial Plan
System-wide Programming Options - Clock Synchronization
System-wide Programming Options - Clock Switching
  At a Glance
  Considerations & Constraints
 
  Incoming Calls
Outgoing Calls
  Mode Differences
Feature Interactions