[Freeswitch-users] Altering From Header in SIP Invite

[Paul Cupis]

On 14/09/12 12:46, Rob Moore wrote:
> Hope this helps anyone else who ever has to provide this unusual setup.

This does seem to be the only way of dealing with this setup.

You may additionally want to look at doing the following, depending on 
the rest of your setup.

Remove P-A-ID headers before adding custom header:
     <action application="unset" data="sip_h_P-Asserted-Identity"/>

Honour Privacy/withheld-flag:
     <action application="unset" data="sip_h_Privacy"/>
     <action application="set" data="sip_h_Privacy=id"/>

(some might also want to set Privacy:none explicitly when CLI may be 
released, but the absence of any Privacy flags should set this by default).

Regards,