Configuring Call Control - Lucent Technologies Stinger MRT 19 Getting Started Manual

Configuring call control

By default, a Stinger unit monitors the physical line states of its interfaces and allows
connections to be established only when the line state is fully up. Using the
call-control procedures, you can configure a Stinger unit to allow connections to be
established even when the line state is not fully up. You can configure the unit to use
these procedures system-wide or on a per-port basis on SHDSL ports.
The call-control mechanism enables the Stinger unit to establish and maintain soft
PVCs (SPVCs) across port state changes. This feature allows xDSL subscribers to
establish connections on interfaces in the operating states that exist before the
modems are fully trained, as well as in the standard port-up state. SPVC connections
are accepted when the modem has not fully trained to the port-up state. If an
interface with an active SPVC connection changes from a port-up state to the state
before it was fully trained, the SPVC remains connected. Connections are broken
only if the physical slot or line stops operating or is disabled by an administrator.
Following are examples of the call-control parameters in different profiles, shown
with their default settings:
[in SYSTEM]
ignore-lineup = no
[in SHDSL/{ any-shelf any-slot 0 }]
ignore-lineup = system-defined
[in DS3-ATM/{ any-shelf any-slot 0 }]
ignore-lineup = system-defined
Parameter
In the system
profile:
ignore-lineup
Stinger® MRT Getting Started Guide
Setting
Enable or disable the Stinger system's ability to ignore line
status when determining whether calls are established or not.
Specify one of the following values:
no (the default)—The Stinger call-control mechanism
allows calls to be established if the line state is up and
disallows calls if the line state is down.
yes—The Stinger call-control mechanism ignores the line
state and allows calls to be established on a port as long as
the specified slot is operational and the specified port is
enabled.
Configuring the SHDSL line interfaces
Configuring call control
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