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Caller ID Feature

Considerations and Constraints

General

An organization must subscribe to the Caller ID service in order for incoming calls through the 800 GS/LS-ID, 408 GS/LS-ID-MLX, or 412 LS-ID-TDL module to receive Caller ID information (loop-start lines only).

If you have a MERLIN Messaging System of Release 2.5 or later and a MERLIN MAGIX system of Release 2.0 or later, program the LS-ID Delay Option to allow the Calling Party Number information to be sent to the MERLIN Messaging System before the call is answered at the messaging system.

Caller ID information arrives between the first and second ring at an extension.

PRI ANI uses the second screen of the telephone display to show the called party number, while Caller ID generally uses this page to display the facility number.

Topics
	Description
	Caller ID Modules LS-ID Delay Option Facilities Display Operation Calling Party Number Sent to a MERLIN Messaging System
	At a Glance
	Considerations & Constraints
	System Programming
	Mode Differences
	Feature Interactions