Hi All,
 
I found that PSTN GW usually put the "From: xxxx@ipaddress" as ANI (caller ID) when it receive a SIP call.  There is a function "rewritingURI" for called URI, I am wandering if there was a function can do rewriting on the the sorc "From" also.
 
For example:
user FROM:alice@abc.com make call to hugen@abf.com, can I rewrite the alice@abc.com  to 661234223@abc.com when I send INVITE to hugen@abf.com ?
 
Any help will be appreciated.
 
Steve