Dear Niloc,

Thank you for your support,
I will consider doing version up later.

Are there any NAT between the SIP Server and the client B? Yes, I used router for testing. Does the same issue happen even if you test at LAN without NAT/router? I'm not test yet. So, I'm not sure about this case. Once again, this problem is happening rarely. Which version of Brekeke SIP Server is ...

Does the same problem persist even if you use UDP instead of TLS? My SIP client application don't use UDP mode (this is spec), so I don't know whether it works fine in UDP mode or not. But I think this problem is due to TLS connection keeping its session. *Note: but the INVITE from Brekeke SIP ...

Dear Niloc, Sorry for lack of information. I give more information inline. Is it Brekeke PBX or Brekeke SIP Server? Brekeke SIP Server What kind of SIP client product are you using? I used SIP client of my company. It's still in developing, not public yet Which transport protocol are you using for ...

1. Brekeke Product Name and Version: 2. Java version: 3. OS type and the version: 4. UA (phone), gateway or other hardware/software involved: 5. Your problem: I'm using push notification (FCM/APNs) to announce an incoming call. User A make a phone call to User B. On the B side, after received a push ...