[Serusers] How to change INVITE From field

[Olaf Bergmann]

x-ser at sidell.org wrote:
> For outbound pstn calls, I want to change the INVITE message's From:
> header field to specify my caller id.  For example, I want to change
> it from this:
> 
> From: 201 <sip:201 at 67.32.47.145:5060>;tag=4f3c1a5892c015f
> 
> to this:
> 
> From: Forte Inc <sip:9195551234 at 67.32.47.145:5060>;tag=4f3c1a5892c015f
> 
> What's the best way to change the "comment" and LHS of the address?

The general recommendation is not to do this. Besides
RFC-2543-related reasons, a compelling argument is that the branch
tag created by SER is (IIRC) built from a hash over specific parts
of the From field.

Regards,
Olaf