Instruction manual

Page 1365 of 3156
Features and Services
1368
Dual Signaling on Analog Trunks
Contents
The following are the topics in this section:
Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1365
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1366
Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1367
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1367
Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1367
Task summary list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1367
Feature description
A telephone user can select any interexchange carrier for any given call by
using a Carrier Access Code (CAC). A CAC comprises an Equal Access
identifier and a Carrier Identification Code (CIC). Nortel Networks refers to
a call preceded by a CAC as an Equal Access call.
The Dual Signaling on Analog Trunks feature allows Dial Pulse signaling and
Digitone signaling to be applied separately to incoming and outgoing calls on
one trunk. It reduces the number of Digitone Receiver (DTR) units required
on the system since these units are no longer necessary for incoming calls on
trunks programmed with the new DPDT Class of Service.
The new trunk Classes of Service in LD 14 are:
• DPDT = digit information is received as Dial Pulse and sent as Digitone
• DTDP = digit information is received as Digitone and sent as Dial Pulse