# Calling Line ID Restriction

## Purpose

Calling Line ID Restriction (CLIR) controls the presentation of caller identity If CLIR is allowed, the caller's ID is not presented to the called party. You can define Calling Line ID Restriction (CLIR) on a fixed (global) basis or on a per-call basis (defined for each call). For fixed basis you can select Allow or Restrict for both Voice and Data. For Call by Call basis the digits to dial are listed for each CLIR option.

Use this form to perform the following tasks:

- Program Embedded BRI Trunks

- Program Embedded PRI/QSIG

## Conditions

None

## Field Descriptions

Parameter | Description | Default Value
Controller Module | System-generated, protected field. Identifies the module position (1-4) in the controller. |
Port | System-generated, protected field. Identifies the port (1 or 2) in the module. |
Link Number | System-generated, protected field. |
Protocol | System-generated, protected field. From the ISDN Protocol form. |
Protocol Variant | System-generated, protected field. From the ISDN Protocol form. |
Type | Fixed to define for all calls or Call by Call to define for each call. | Fixed
Fixed CLIR Only - Voice | Allow or restrict calling line ID on voice calls. | Allow
Fixed CLIR Only - Data | Allow or restrict calling line ID on data calls. (Not applicable with IDA-P protocol.) | Allow
Call by Call CLIR Only | System-generated, protected field. The digits are listed for the appropriate CLIR option -- 0: Allow or 1: Restrict |