U should be able to change it via:

sip_contact_uri

                             <action application="export" data="sip_contact_uri=1.2.3.4:5060" />

Not sure wheter u need to add sip: or not.

From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of David Villasmil
Sent: Friday, June 9, 2017 7:48 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: [Freeswitch-users] Removing userpart of contact

Hello guys,

I ran into a situation where I need the contact to be like:

<sip:1.2.3.4:5060>

Meaning I need to remove the username, i've trying doing this but FS adds the user as "mod_sofia"... is it possible to do this?

Thanks and Regards,

David Villasmil

email: david.villasmil.work@gmail.com

phone: +34669448337

ᐧ