[asterisk-users] Calls Disconnect very often

[Tariq ..]

Greetings.. 
i'm having a disconnection problems with Calls comming to my Call Center.. 
i'm using the free version of G729 .. and i'm starting to suspect it would be the reason.. i just need to know if it's possible or there will be other problems??
 
i asked the technician in the location to do a ping to our DNS and there seems to be a problem.. one of them doesn't response and the other one has lots of timeouts.. he noticed that the disconnection of the call occures at the same time a timeout happens to the DNS .. so my question will be the following.. is it a CODEC problem? G729 more sensitive to internet than G723? 
Regards
Tark Sawah
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