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GXP-2000 attended transfer issue, yes, again! and "481 No such call" SIP message

biquad
Posts: 37
 Member Since:
2006-11-11
Submitted by biquad on Tue, 09/18/2007 - 3:59am.

Hi there. This has been going on for almost a year now. I won't explain again the details, but please see http://www.trixbox.org/forums/vendor-moderated-forums/grandstream... or also the posts near the middle of this thread: http://www.trixbox.org/forums/vendor-specific-unmoderated/grandst...

In any case, I am now with firmware 1.1.4.22 and trixbox 2.2.3. This is what I found:
a) the problem is intermittent, at least on my test setup. On other setups, it *always* occurs
b) I tried analyzing the VoIP call with Wireshark. I noticed that when the problem occurs, there is always *at least one* "481 No such call" SIP message. On the other hand, if the call transfer is successful (actually the call transfer is always successful; it's the phone in the middle that sometimes doesn't go off hook), there is no such message.

Perhaps I'll post the wireshark graph, in text mode. Any ideas?

Thanks!

‹ 1.1.4.14 Initial thoughts Grandstream Ringtones ›

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biquad
Posts: 37
 Member Since:
2006-11-11
bump
Tue, 09/25/2007 - 10:07am

Anyone?


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greg101
Posts: 112
 Member Since:
2007-01-30
PM me with your email
Tue, 09/25/2007 - 11:01am

PM me with your email address and I will screen shot my phones web config pages and send them to you.

I have 25 GXP2000, we do attended transfers all the time, have not seen the issue.

Maybe a comparison between my settings and yours will spot some obscure difference in the settings.


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biquad
Posts: 37
 Member Since:
2006-11-11
Thanks. This is strange, I
Wed, 10/03/2007 - 1:39am

Thanks. This is strange, I am using a default configuration, basically I changed the SIP account settings and that's pretty much it. Will let you know after I check with your screenshots


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