[Serusers] Rewrite Contact Field

Hi All, Hoping you regular expression gurus out there can help me out a bit. I am wanting to rewrite the Contact header field inside a sip message using either the replace or subst from the textops module. I've done my best but complex/long regular expressions are just a bit beyond me. I want to change Contact "potato" <sip:99196026@ns.commverge.co.nz:5060> to Contact "potato" <sip:99196026@sipsrv2.tranzpeer.net:5060>. So far I can change bits of it and almost get it right but I am still seeing the original contact right after the new one i.e: Contact "potato" <sip:99196026@ns.commverge.co.nz:5060.sip:99196026@sipsrv2.tranzpeer.net:5060> HELP Thanks in advance, Stephen ----------------------------------------------------------------------------------------------- This message and any attachments contain privileged and confidential information. If you are not the intended recipient of this message, you are hereby notified that any use, dissemination, distribution or reproduction of this message is prohibited. If you have received this message in error please notify the sender immediately via email and then destroy this message and any attachments.