Round trip delay request

[cavagnaro]

Hi guys,
Question, there is this parameters on the IP section but just would like to know if this also applies to SIP? I ask this because now on a customer we are having an issue where some some calls are cut off after around 40secs and we had this issue on other customer and changing this parameters solved the issue, difference is that now is SIP and then was H323...

Thanks

[tot3nkopf]

Are you using SIP phones or X-Lite (Bria)?

[cavagnaro]

None, we are using Addpac endpoints (analog to sip devices).

[alex]

Hmm... It should not work on SIP.
Actually "Round Trip Delay Request/Response" are a H.245 messages. H.245 is a part of H.323 protocol suite.
Doubt that UAC/UAS implementation in OXE uses that part of H.323 implementation.

[MrAnMo]

I had once the same situation.
cpu's in spatial redundancy. sip phone declared as sip device. Calls disconnected after 40 seconds. When phone was declared as sip extension than the call was disconnected in 6 or 8 seconds.
Solution put dns name resolving on and let the phones connect to the dns name instead of ip address. Maybe it is your solution to?

What is the trace saying? Who is sending the bye. Is there a response on the 200 ok message?

[cavagnaro]

Thanks for refreshing my memory will give it a shot

[krzysioD]

Tcpdump them at CPU, at GD and at IPphone end - check maybe some ping/pong does not come back?
6-8 - looks like magic 7 s that if ip equipment has no response - gets reboot -
i don't even count - how many times i done some plug in / plug out with some friend - 4 hands 2xRJ45 plugs and 2xRJ45 sockets, and need to find in time - under 7 seconds.
Think that some sip message like register - and some timer expires need to pass, if not - oxe does unregister it?

[ether]

having the same nightmare. my sip extension calls always disconnects after 32 seconds. Have tried with xlite, still the same.
From NOE to sip aok. But sip to NOE, bummerrrrr , plus add the hook detection issue.

Anybody from 9.1?

[vad]

having the same nightmare. my sip extension calls always disconnects after 32 seconds. Have tried with xlite, still the same.
From NOE to sip aok. But sip to NOE, bummerrrrr , plus add the hook detection issue.

Anybody from 9.1?

With "round trip delay request" problem - you have disconnected calls after 40 sec (in both direction) - in your case looks like:
NOE set called;
NOE set answer but SIP not send confirmation (about connect) (or PBX not send answer) and you can say during some timeout (one end wait connect or connect acknoledge).
Make sip traces and compare. (SIP --> NOE, NOE --> SIP).

[ether]

@vad - thank you. That helped me a lottttt. ACK was not there when calling SIP to NOE. The problem was with my DNS resolution. Now i can sleep more or encounter more headache. =-)