SIP trunk provider of our customer requires sending host name in From part of Invite message instead of IP address. For example, this INVITE message was not accepted:
From: "Training Center" <sip:377183420@10.0.0.2:5060>;tag=0_995574272-101460707
but this was:
From: "Training Center" <sip:377183420@cz.in.gtsce.com>;tag=0_1604084272-101460756
I was looking in some setting in the MBG (version 8.0) but couldn't find anything, finally the solution (read 'hack') was to change the Host Name of the ICP (MCD 5.0 SP2 PR2) to "cz" and the Domain Name to "in.gtsce.com" on System IP Properties form. I would expect some configurable option on the MBG. Any ideas?
The configuration is virtual MBG in server gateway mode (WAN IP: 10.0.0.2, LAN IP: 172.16.10.10) and PBX (IP: 172.16.10.2).
Petr