Huawei V200R001C01 - Page 114

Troubleshooting Procedure
NOTE
Saving the results of each troubleshooting step is recommended. If troubleshooting fails to correct the fault,
you will have a record of your actions to provide Huawei technical support personnel.
Procedure
Step 1 Check that a link is set up successfully.
Run the display isdn call-info command to check the call status.
l If no information is displayed, no PRI interface is configured as a dialer interface. Create a
dialer interface.
l If the value of State in the command output is TEI_ASSIGNED or
AWAITING_ESTABLISHMENT, the link is not set up. Rectify the fault according to
5.5.1 Link Failed to Be Established on ISDN Interfaces.
l If the value of State in the command output is MULTIPLE_FRAME_ESTABLISHED,
the link has been set up. Go to step 2.
Step 2 Check whether the AR2200-S receives the call.
Run the debugging dialer all, debugging isdn cc, debugging isdn q931, terminal
debugging, and terminal monitor commands to check whether the AR2200-S sends and
receives packets.
l If the command outputs do not contain N->U, the AR2200-S does not receive calls. Check
the configurations on the call initiator.
l If the following information is displayed, the AR2200-S has received the call. Go to step
3.
<Huawei>
Oct 14 2007 10:30:19.160.1+08:00 AR2220 Q931/7/Q931_Debug:
Serial1/0/0:15
N->U DL_I_Data_Ind CES =
1
cr= 02 00 e7 SETUP *send_comp=a1 *bearer=04 02 88 90 *chan_id=18 03 a1 83 9a
*called_n=70 05 80 30 31 32 33
Step 3 Check whether the AR2200-S rejects the call.
Various interaction packets are sent during the setup of an ISDN call. If the AR2200-S receives
a packet of a wrong type, the AR2200-S rejects the call.
Run the debugging dialer all, debugging isdn cc, debugging isdn q931, terminal
debugging, and terminal monitor commands to check whether the AR2200-S rejects the call.
l If the following information is displayed, the AR2200-S has rejected the call. Restart the
AR2200-S.
<Huawei> Oct 14 2007 08:56:10.30.1+08:00 AR2220 CC/7/CC_Debug:
CC <-DDR : ISDN_DISC_REQ
CallID=0x0 UserID=0x0 PortID=0x9 ServiceType=0x8 Channel=0x2 IsCompleted=0x0
Cause=0x00
Oct 14 2007 08:56:10.30.2+08:00 AR2220 CC/7/CC_Debug:
CC->Q931: PRIM_DISCONNECT_REQ
CCIndex=0x0 L3Index=0x1 PortID=0x9 CES=0x1 *cause=08 02 80 90
Oct 14 2007 08:56:10.40.1+08:00 AR2220 Q931/7/Q931_Debug: Serial1/0/0:15
U->N DL_I_Data_Req CES = 1
cr= 01 01 DISCONNECT *cause=08 02 80 90
Huawei AR2200-S Series Enterprise Routers
Troubleshooting 5 WAN
Issue 01 (2012-01-06) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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