Norstar Version - IP Office Info

Configuration Settings: Trunks
3.5.1.1 Analog Advanced Setup
This menu is accessed from the System 41 page by selecting Update Trunk Configurations.
This menu is accessed from the Admin Tasks 42 list by selecting Trunks.
Items marked with a icon can be programmed from a phone extension.
Trunk Parameters
· Impedance: Default = Default
Set the impedance used for the line. The settings vary depending on the system's Country setting. These options
are only available for Bahrain, Canada, Egypt, Kuwait, Mexico, Morocco, Oman, Pakistan, Qatar, Saudi
Arabia, South Africa, Turkey, United Arab Emirates and United States.
· Quiet Line: Default = Off
This setting may be required to compensate for signal loss on long lines.
· Digits to break dial tone: Default = 2, Range = Up to 3 digits.
During impedance testing, once the system has seized a line, it dials this digit or digits to the line. In some
cases it may be necessary to use a different digit or digits. For example, if analog trunk go via another PBX
system or Centrex, it will be necessary to use the external trunk dialing prefix of the remote system plus
another digit, for example 92.
· Automatic Balance Impedance Match:
These controls can be used to test the impedance of a line and to then display the best match resulting from
the test. Testing should be performed with the line connected but the phone system otherwise idle. To start
testing click Start. The phone system will then send a series of signals to the line and monitor the response,
repeating this at each possible impedance setting. Testing can be stopped at any time by clicking Stop. When
testing is complete, Manager displays the best match and asks whether that match should be used for the line.
If Yes is selected, Manager asks whether the match should be applied to all other analog lines provided by the
same analog trunk card or module. To conform with the Receive Objective Loudness Rating at distances
greater than 2.7km from the central office, on the analogue trunks a receive gain of 1.5 db needs to be
added.
· Ring Persistency: Default = 400ms, Range = 0 to 2550ms.
The minimum duration of signal required to be recognized.
· Ring Off Maximum: Default = 5000ms, Range = 0 to 25500ms.
The time before signaling is regarded as ended.
Norstar Version 7.0 Manager Page 79
IP Office Essential Edition
- Issue 03a (21 February 2011)