SIP message cause code help

Question

Hello,
I am currently using an AS5400 with IOS version c5400-is-mz.124-19.bin
Is there a way to remove or modify the Q.850 information in a SIP message?
Sent:
SIP/2.0 500 Internal Server Error
Via: SIP/2.0/UDP IP.IP.IP.IP:5060;branch=z9hG4bK_1584620887_3359_1
From: "Anonymous" <sip:[email protected]:5060>;tag=1584620887_C
To: sip:[email protected]:5060;tag=531C24F0-E57
Date: Wed, 07 Apr 2010 19:03:35 GMT
Call-ID: sbcsipuac.2_IP.IP.IP.IP_b03sb13_1_2010040716044947_1584620887_435758
Server: Cisco-SIPGateway/IOS-12.x
CSeq: 1005 INVITE
Allow-Events: telephone-event
Reason: Q.850;cause=16
Content-Length: 0
Our switch was programmed poorly and sends back cause 16 for every call.
Is there any way to change it to 34? or remove it altogether?
I've tried setting sip-status and pstn-cause on sip-ua but only able to modify the SIP message, not the Q.850 message.
Any help would be greatly appreciated.
Thank you in advance.

Answer 1

I'm not sure but try this:
To map a Q.850 call-disconnect cause code to a different Q.850 call-disconnect cause code, use the
q850-cause command in application-map configuration mode. To disable the code-to-code mapping, use
the no form of this command.
q850-cause code-id q850-cause code-id
no q850-cause code-id q850-cause code-id
The following example maps cause code 34 to cause code 17:
Router(config)# application
Router(config-app)# map
Router(config-app-map)# q850-cause 34 q850-cause 17