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574 CHAPTER 37: ISDN CONFIGURATION COMMANDS
undo isdn ignore connect-ack
View ISDN interface view
Parameter None
Description Use the
isdn ignore connect-ack command to configure the router to switch
the ISDN protocol state to ACTIVE to start the data and voice service
communications after sending a CONNECT message without having to wait for a
CONNECT ACK message. Use the undo isdn ignore connect-ack command to
restore the default setting.
By default, in the event that the router is communicating with an exchange, the
ISDN protocol must wait for the CONNECT ACK message in response to the
CONNECT message before it can switch to the ACTIVE state to start data and
voice service communications.
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 # Set the call process on the BRI interface 1/0 to proceed to the ACTIVE state
without waiting for CONNECT ACK messages.
<Sysname> system-view
[Sysname] interface bri 1/0
[Sysname-Bri1/0] isdn ignore connect-ack
isdn ignore hlc
Syntax isdn ignore hlc
undo isdn ignore hlc
View ISDN interface view
Parameter None
Description Use the
isdn ignore hlc command to disable ISDN to carry the higher layer
compatibility (HLC) information element in the SETUP messages sent when placing
voice calls.
Use the
undo isdn ignore hlc command to configure ISDN to carry the HLC
information element in SETUP messages.