l If the command outputs do not contain the preceding information, the network-side device
has accepted the call. Go to step 6.
Step 6 Check that the protocol status of the data channel is Up.
Run the display isdn active-channel command to check the activated data channel.
<Huawei> display isdn active-channel
Serial1/0/0:15
-------------------------------------------------------------------------------
Channel Call Call Calling Calling Called
Called
Info Property Type Number Subaddress Number
Subaddress
-------------------------------------------------------------------------------
B26 Digital Out 88888204 - 88888206 -
Run the display interface serial 1/0/0:15 command to check the data channel corresponding to
the call. If the protocol status is Line protocol current state : Up, the protocol status of the data
channel is Up. Go to step 7.
If the protocol status is Line protocol current state : DOWN, the protocol status of the data
channel is Down. Rectify the fault according to 5.7.1 Protocol Status of a PPP Interface Is
Down.
Step 7 Collect the following information and contact Huawei technical support personnel.
l Results of the preceding troubleshooting procedure
l Configuration files, log files, and alarm files of the AR2200-S
----End
Relevant Alarms and Logs
Relevant Alarms
None.
Relevant Logs
None.
5.4.2 Failed to Receive Calls
Common Causes
This fault is commonly caused by one of the following:
l A link is not set up.
l The AR2200-S does not receive the call.
l The AR rejects the call because the interaction packet type is incorrect.
l The network-side device rejects the call because the interaction packet type is incorrect.
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 5 WAN
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
103
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