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-   -   Dubai new behaviour (https://forum.sipbroker.com/showthread.php?t=4392)

amir_159 09-24-2009 10:35 AM

Dubai new behaviour
I'm testing now the voxalot service in Dubai and here are my new findings wrt the old ones.
Conditions :
1- ATA 2100
2- Port tested 5060 and 80
3- ISP : Du
4- One side is in Dubai the other in Egypt

1- The registration is always OK, and dial tone is heard. (I assume ports are open then)
2- The first call initiated by any side works perfect and the call is fine.
3- Just after this successful calls (one initiated from each side), all attempts lead to one symptom : one way audio, Egypt can hear dubai but Dubai can not.
4- The symptoms are very consistent, after 12 hours the whole cycle repeated again, 2 calls went fine originated from both side.
Then one way audio again !!!!

1- Port are not blocked as registration is working fine and dial tone is here all the time.
2- I guess a self intelligence somewhere understands the SIP packets (RDP) and kills them.
3- After a certain timer (few hours) this killing rule is reset!!!

Can you help me with suggestions to try to make it happen please?
Thanks for your great help

mohnashaat 11-13-2009 06:16 AM

i heard that all voip is blocked in UAE, maybe this is the cause, but i heard that only bestip devices are working fine

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