Huawei eSpace IAD - Busy Tone When Picking up or Dialing a Number

eSpace IAD
Troubleshooting
2 Analyzing and Rectifying Faults
Issue 02 (2012-02-29)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
2.1.3 Busy Tone When Picking Up or Dialing a Number
Symptom

Beeps occur on phones connected to the IAD. Users cannot dial numbers.

A user always hears the busy tone when dialing a number.
Cause

The user is not registered with the softswitch.

The called number does not exist.

The short-circuit occurs.

The IAD is faulty.

The mapping between the cable sequence and ports is incorrect.
Solution
Step 1 Ping the softswitch IP address on the IAD.

If the softswitch can be pinged, go to Step 2.

If it cannot be ping through, check whether the network cable is well plugged (ensure
that the uplink cable is plugged in the WAN port of the IAD).
Step 2 Run the display protocol-mode command to view the protocol used by the IAD.
Step 3 For SIP services, run the display sip digitmap command to query the digitmap configuration.
TERMINAL(config)#display sip digitmap
If the default digitmap [XABCD*#].T is deleted and other digitmaps are not configured, you
cannot initiate any calls. For details about how to configure digitmaps, see the product
document.
Step 4 View the user registration status.

For MGCP services, run the display mgcp attribute command to view the user
registration status.

For SIP services, run the display sip attribute all command to view the user registration
status.
Step 5 If the user is not registered with the softswitch, verify that the account of the user is enabled
on the softswitch and is configured correctly on the IAD.

For SIP services, you can query the attribute configuration of the SIP services as follows:
− If the registration fails, check whether the data of the user is configured on the
softswitch.
− If the user ID or password is inconsistent with that on the softswitch, run the sip user
command to configure the information.
− If the IP address of the SIP server configured on the IAD is incorrect, run the sip
serverindexaddressipaddress command to configure the information.

For MGCP services, you can query the attribute configuration of the MGCP services as
follows:
− If the IP address or domain name of the MGC (registration server) is not configured,
run the mgcp mgcindexaddressipaddress command to configure the information. For