Iad Fails To Send Faxes To Zte Softswitches - Huawei eSpace IAD Troubleshooting Manual

eSpace IAD
Troubleshooting
3.
Step 3 Check the softswitch manufacturer and the softswitch type of the IAD.
The softswitch type configured on the IAD must be the same as the actual softswitch type.
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Step 4 Contact Huawei technical support.
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2.2.2 IAD Fails to Send Faxes to ZTE Softswitches

Symptom
In the MGCP mode, the IAD fails to send faxes to ZTE ZS SS10.
Cause
By default, the T30 mode is configured on ZTE softswitches for ZTE IADs that use the H248
protocol. When Huawei IADs send or receive faxes using MGCP, the softswitch cannot
recognize all information and the faxing fails.
Proprietary protocols are used to send heartbeat messages for devices of all manufacturers,
and therefore 522 message will be displayed. This error does not affect communication.
Solution
Step 1 Configure a static attribute template, default attribute template, and packet template when
adding an IAD.
Step 2 Modify the static attribute template.
When the fax service is enabled, MGCP faxing modes T30, T38, and T30 or T38 are
displayed on the static attribute template.
Select T30.
Step 3 Modify the default attribute template.
In the SDP description, select Fax, and change the codec mode and packaging duration to
PCMA and 20 respectively. If the default value is used, 510 error occurs in the faxing
process.
Step 4 Modify the package template.
Issue 02 (2012-02-29)
If SIP is used, run the display sip send-capability command to view the faxing mode. If
the faxing mode is different from that of the softswitch, run the sip send-capability fax
pri command to change the faxing mode. If the faxing modes are the same, go to
Run the display protocol-mode command to view the protocol used by the IAD.
If MGCP is used, run the display mgcp soft-parameter command to view the
softswitch type of the IAD. If the softswitch type of the IAD is different from the actual
softswitch type, run the mgcp soft-parameter mgc-type command to change the
softswitch type. If the softswitch types are the same, go to
If SIP is used, run the display sip soft-parameter command to view the softswitch type
of the IAD. If the softswitch type of the IAD is different from the actual softswitch type,
run the sip soft-parameter soft-switch-type command to change the softswitch type. If
the softswitch types are the same, go to
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2 Analy zing and Rectify ing Faults
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