Instruction manual

Page 1297 of 3156
Features and Services
Direct Inward Dialing to TIE Connection
Contents
The following are the topics in this section:
Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1297
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1297
Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1298
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1298
Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1298
Task summary list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1298
Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1299
Feature description
This feature allows DID-to-TIE connections, subject to all trunk barring,
Trunk Group Access Restrictions (TGAR), Trunk Access Restriction Groups
(TARG), and other Class of Service restrictions. When the end-of-dialing
timer detects that end-of-dialing is reached for an outgoing TIE trunk the Call
Forward No Answer (CFNA) timer is started.
If the CFNA timer expires prior to detecting an answer signal the call is
intercepted to the attendant. If a routed call receives a busy signal from an
extension, the busy signal is returned to the DID. If the DID does not go on-
hook before the CFNA recall timer expires, the call is routed to the attendant.
Operating parameters
The Central Office must be equipped to handle the special signaling
requirements associated with the DID-to-TIE Connection feature described
above.