CHAPTER23 Digital PSTN
Mediant 1000 Gateway & E-SBC | User's Manual
23 Digital PSTN
This section describes the configuration of the device's Gateway application for its' digital
interfaces (PSTN).
Configuring Trunk Settings
The Trunk Settings page allows you to configure the device's PSTN trunks. This includes selecting
the PSTN protocol and configuring related parameters. This page also lets you perform the
following maintenance procedures:
â– Taking a Trunk Out of Service: Some parameters can be configured when the trunk is in
service, while others require you to take the trunk out of service. To take a trunk out of service,
click the Stop Trunk button. Once a trunk is "stopped", all current calls are dropped and no
new calls can be made on the trunk.
â– Deactivating an E1/T1 Trunk: To deactivate a trunk, click the Deactivate button.
Deactivation temporarily disconnects (logically) the trunk from the PSTN network. Upon trunk
deactivation, the device generates an AIS alarm on the trunk to the far-end. As a result, an RAI
alarm signal may be received by the device. A subsequent trunk activation, done 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.
â– Creating a Loopback Line: You can create (and remove) remote loopback for DS1 lines. This
is done by clicking the Create Loopback button. To remove the loopback, click the Remove
Loopback button.
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