Instruction manual

Page 997 of 3156
Features and Services
China – Busy Tone Detection
Contents
The following are the topics in this section:
Feature description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 997
Operating parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 998
Feature interactions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 998
Feature packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 999
Feature implementation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 999
Task summary list . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 999
Feature operation . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000
Feature description
In many countries, loop start trunks are not supervised. Therefore, many
Public Exchanges/Central Offices send a busy tone to the Meridian 1 when
the external party has disconnected. A tone detector must be used to detect
this tone.
The China – Busy Tone Detection (BTD) feature allows a technician to enter
the characteristics of the busy tone to be detected in overlay 97. This
information is downloaded to the Meridian 1 trunk for use during call
processing. Once the busy tone is detected, the trunk sends a message to the
Meridian 1 software, which then disconnects the call, and the trunk is free for
other uses.
An option is provided to allow Busy Tone Disconnect to occur only for
incoming calls. This option is also programmed in overlay 97. Cadence
information is downloaded on a card basis.