Pstn Settings; Configuring The Trunk Settings - AudioCodes Mediant 3000 User Manual

3.3.3

PSTN Settings

The PSTN Settings menu allows you to configure various PSTN settings and includes the
following page items:
Trunk Settings (refer to ''Configuring the Trunk Settings'' on page 82)
Transmission Settings (refer to "Configuring the Transmission Settings" on page 85)
CAS State Machines (refer to ''Configuring the CAS State Machines'' on page 87)
3.3.3.1

Configuring the Trunk Settings

The 'Trunk Settings' page allows you to configure the device's trunks. This includes
selecting the PSTN protocol and configuring related parameters.
Some parameters can be configured when the trunk is in service, while others require you
to take the trunk out of service (by clicking the Stop button). Once you have "stopped" a
trunk, all calls are dropped and no new calls can be made on that trunk.
You can also deactivate a trunk (by clicking the Deactivate button) for maintenance.
Deactivation temporarily disconnects (logically) the trunk from the PSTN network. Upon
trunk deactivation, the device generates an AIS alarm on that trunk to the far-end (as a
result, an RAI alarm signal may be received by the device). A subsequent trunk activation
(by clicking the Activate button), reconnects the trunk to the PSTN network and clears the
AIS alarm. Trunk deactivation is typically used for maintenance such as checking the
trunk's physical integrity, but also for maintenance on trunks with SS7 links. Stopping a
trunk (using the Stop button) with SS7 links can only be done after its SS7 links are deleted.
In contrast, with trunk deactivation, you can take the trunk out of service without having to
delete its SS7 links.
For a description of the trunk parameters, refer to ''PSTN Parameters'' on page 353.
Notes:
SIP User's Manual
•
During trunk deactivation, trunk configuration cannot be performed.
•
A stopped trunk cannot also be activated.
82
Mediant 3000
Document #: LTRT-89707