Hi

When I connect Bria Softphone directly to my SIP Server via LAN, I can see these events when Ringing

SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.1.161:5560;branch=z9hG4bK2C08C598-CD49-4C26-8B59-BA66D4B24F67-56
Contact: <sip:bria_3pcc@192.168.1.110:63658>
To: <sip:7000@192.168.1.161:5560>;tag=6000d8d5
From: sip:webrtc3@192.168.1.161:5560;tag=2E1D8F89-B7B9-463A-8B78-9CD25ED895BE-15330
Call-ID: 21465F92-0D75-4330-9C3A-DBBB086BB405-19@192.168.1.161
CSeq: 1 INVITE
User-Agent: Bria 5 release 5.8.4 stamp 104678
Allow-Events: talk, hold
Content-Length: 0

Allow-Events: talk, hold
Allow us to use CTI Integration on BRIA and our Agents frontend.

But when I use the SIP GW in the middle as I am now connecting from the Internet, I lose those Headers:

20:09:40.740: Sending  [0,UDP] 579 bytes to 192.168.1.173:5060 >>>>>
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 192.168.1.173:5060;rport;branch=z9hG4bK-613213806656-19216811615560;received=192.168.1.173
From: <sip:webrtc3@192.168.1.161>;tag=a441349586219143
To: <sip:7000@192.168.1.161>;tag=2E1D8F89-B7B9-463A-8B78-9CD25ED895BE-15334
Call-ID: 18e5962825228775896741k45931rmwp-b4-27-83072
CSeq: 26303 INVITE
X-Genesis-CallUUID: D5C8DT42HT68D99TRPGLAIEJ0G00000L
Allow: INVITE, ACK, PRACK, CANCEL, BYE, UPDATE
X-MSL: 0
Server: MizuVoIPServerRTCGW 9.3
X-Peer-Server: Bria 5 release 5.8.4 stamp 104678
X-UT: g
Supported: uui
Content-Length: 0

How can I instruct the SIP GW to attach them too to the call?

This allows the SIP Server to send a NOTIFY event with "Event: talk" so the Bria will answer the call automatically

NOTIFY sip:bria_3pcc@192.168.1.110:63658 SIP/2.0
From: sip:webrtc3@192.168.1.161:5560;tag=2E1D8F89-B7B9-463A-8B78-9CD25ED895BE-15330
To: <sip:7000@192.168.1.161:5560>;tag=6000d8d5
Call-ID: 21465F92-0D75-4330-9C3A-DBBB086BB405-19@192.168.1.161
CSeq: 2 NOTIFY
Content-Length: 0
Via: SIP/2.0/UDP 192.168.1.161:5560;branch=z9hG4bK2C08C598-CD49-4C26-8B59-BA66D4B24F67-57
Contact: <sip:webrtc3@192.168.1.161:5560>
Event: talk
Subscription-State: active
Max-Forwards: 38