RADVision SCOPIA 400 User Manual page 126

Configuring Gateway Settings
116 SCOPIA 400/1000 Gateway User Guide
Table 3-15 Advanced Settings—ISDN Options
Field or Check Box
Request ISDN rollover
when less than n B
channels are available
(available in PRI
Gateways only)
Table 3-16 Advanced Settings—General
Field or Check Box
Restrict Gateway use to
MCU conferences only
Support Presentation
Restriction (unavailable in
Gateway S40 SP)
Description
Select to define when the Gateway uses the ISDN rollover
feature (which is defined in advanced commands—see
Configuring Advanced Commands
information). When the total number of available B channels
in both PRI ports falls below the number specified in this
field, the Gateway sends a "busy out" message to the PSTN
switch for each of the remaining B channels. The switch
application "busies out" the remaining B channels and
diverts new calls to other gateways on the network with
greater available resources. This setting is only active after
you configure the Gateway to use a 4ESS PRI line.
For example, you specify 10 in the Request ISDN rollover
when less than n B channels are available field and the
number of available B channels falls to 9. The Gateway
sends a "busy out" request message to the PSTN switch. The
PSTN switch application routes new calls through other
gateways on the network. When the total number of
available B channels returns to at least 10, the Gateway
sends a "busy out" cancellation message to the PSTN switch
indicating the restored ability to receive calls. The PSTN
switch makes the "busied out" lines available and attempts
attempt to route new calls through the Gateway.
Description
Select for the Gateway to send and receive calls to and from
the MCU only. This setting, together with a scheduling
server, reserves resources for scheduled conferences only.
Select to enable support for the presentation restriction
feature. This feature responds to an instruction from the
calling endpoint to forward or to conceal the endpoint
identifier.
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