TR TSY 000577 : ISSUE 1 REV 1
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
THREE-WAY CALLING, FSD 01-02-1301
30-06-2000
12-01-2013
Defines generic requirements for Three-Way Calling (TWC) non-Centrex which is a custom calling feature that allows a customer to add a third part to an existing conversation without operator assistance.
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