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By default, HLC information element is carried in SETUP messages when placing
voice calls.
n
■ In the event that the router is communicating with an ISDN exchange, its
settings must be the same as those on the exchange.
■ You are not allowed to configure this command on an ISDN interface if there is
still a call on it. This command can take effect only if it is configured when
there is no call on the interface. Alternatively, you can manually disable the
interface by executing the shutdown command, configure the command, and
then enable the interface by executing the undo shutdown command. The
operations, however, will lead to the disconnection of the call existing on the
interface.
Example # Configure ISDN to carry the HLC information element in the SETUP messages for
the voice calls placed on the BRI interface 1/0.
<Sysname> system-view
[Sysname] interface bri 1/0
[Sysname-Bri1/0] isdn ignore hlc
isdn ignore llc
Syntax isdn ignore llc
undo isdn ignore llc
View ISDN interface view
Parameter None
Description Use the
isdn ignore llc command to disable ISDN to carry the Lower Layer
Compatibility (LLC) information element in the SETUP messages sent when placing
voice calls.
Use the
undo isdn ignore llc command to configure ISDN to carry the LLC
information element in SETUP messages.
By default, LLC information element is carried in SETUP messages when placing
voice calls.
n
■ In the event that the router is communicating with an ISDN exchange, its
settings must be the same as those on the exchange.
■ You are not allowed to configure this command on an ISDN interface if there is
still a call on it. This command can take effect only if it is configured when
there is no call on the interface. Alternatively, you can manually disable the
interface by executing the shutdown command, configure the command, and
then enable the interface by executing the undo shutdown command. The
operations, however, will lead to the disconnection of the call existing on the
interface.