Hi, It seems that I'm running into a timing issue with outgoing (gateway) registrations, which results in some milliseconds in that I can't send calls over that gateway. I have configured a gateway like this: <gateway name="duro"> <param name="username" value="XXXXXXX"/> <param name="from-domain" value="durosip.qsc.de"/> <param name="password" value="XXXXXXXXXXX"/> <param name="proxy" value="durosip.qsc.de"/> <param name="expire-seconds" value="120"/> <param name="register" value="true"/>^M <param name="register-transport" value="udp"/> <param name="retry-seconds" value="5"/> <param name="caller-id-in-from" value="true"/> </gateway>^M If I look at the "200 OK" messages for the SIP REGISTER packet, the server sends me an "Expires: 30", so FreeSwitch should re-REGISTER every 30 seconds. However, that's what happening: 2012-01-09 16:37:00.804865 [NOTICE] sofia_reg.c:407 Registering duro 2012-01-09 16:37:31.804880 [NOTICE] sofia_reg.c:407 Registering duro 2012-01-09 16:38:03.804894 [NOTICE] sofia_reg.c:407 Registering duro 2012-01-09 16:38:35.824877 [NOTICE] sofia_reg.c:407 Registering duro *2012-01-09 16:39:06.825090 [NOTICE] sofia_reg.c:407 Registering duro* 2012-01-09 16:39:39.824881 [NOTICE] sofia_reg.c:407 Registering duro You can see that it's *approximately* 30 seconds betwee registrations, but in fact every time it's just a little more than 30 secs. This alone makes me feel a little bit strange, since my registration might have been expired during this time window (and consequently, maybe I'm loosing incoming calls because of that). Even for outgoing calls, this seems to be an issue, let's take a look at the 16:39:06.825090 re-REGISTER. We can see that at 16:39:05 (no micro-seconds here) the gateway becomes "UNREGED": Content-Length: 542 Content-Type: text/event-plain Event-Subclass: sofia::gateway_state Event-Name: CUSTOM Core-UUID: 243269fe-d280-4f83-aca1-abb88f2ad258 FreeSWITCH-Hostname: lap597 FreeSWITCH-Switchname: lap597 FreeSWITCH-IPv4: 192.168.232.164 FreeSWITCH-IPv6: ::1 *Event-Date-Local: 2012-01-09 16:39:05* Event-Date-GMT: Mon, 09 Jan 2012 15:39:05 GMT Event-Date-Timestamp: 1326123545824882 Event-Calling-File: sofia_reg.c Event-Calling-Function: sofia_reg_fire_custom_gateway_state_event Event-Calling-Line-Number: 151 Gateway: duro State: UNREGED Ping-Status: UP But the new REGISTER is done a full second later (this is not just a display issue, I saw those messages scrolling by and there was just a second pause between them): Event-Subclass: sofia::gateway_state Event-Name: CUSTOM Core-UUID: 243269fe-d280-4f83-aca1-abb88f2ad258 FreeSWITCH-Hostname: lap597 FreeSWITCH-Switchname: lap597 FreeSWITCH-IPv4: 192.168.232.164 FreeSWITCH-IPv6: ::1 Event-Date-Local: 2012-01-09 16:39:06 *Event-Date-GMT: Mon, 09 Jan 2012 15:39:06 GMT* Event-Date-Timestamp: 1326123546825090 Event-Calling-File: sofia_reg.c Event-Calling-Function: sofia_reg_fire_custom_gateway_state_event Event-Calling-Line-Number: 151 Gateway: duro State: TRYING Ping-Status: DOWN Then, the gateway gets re-registered in a couple of milliseconds and everything is fine again. *It seems that this behaviour effectively creates a timespan of 1-2 seconds, where the gateway is not available for outgoing (and maybe also incoming) calls.* Does anyone of you know this issue? I wonder because this looks just to easy to be wrong in this fashion? Greetings, Roland