Instruction manual

Page 1283 of 3156
Features and Services
Digitone Receiver Enhancements
Contents
The following are the topics in this section:
Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1283
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1284
Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1284
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1284
Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1284
Task summary list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1284
Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1285
Feature description
Digitone Receiver Enhancements feature consists of the Digitone Receiver
Time out Enhancement and the Quadruple Density Digitone Receiver Card.
An enhancement to Digitone receiver (DTR) time out prevents the situation
in which the far-end of an outgoing call from a Dual-tone Multifrequency
(DTMF) telephone or trunk is answered before speechpath can be
established.
This problem can occur when trunks without answer supervision are used,
and the called party answers quickly. Without answer supervision, the speech
path is established upon time out of the end-of-dialing timer. It is possible for
the far-end station to answer before this time out.