g729a support

Telco

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#1
One side or both need to be able to negotiate both G711 and G729a. It seems that my elastix is only negotiating g711. So when I call another sip trunk that is set up for g729a I can not netgotiate with them. Does anyone know how to set up the elastix to auto negotiate between the two?
 

mbit

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#2
Asterisk does not come stock standard with the G729 codec because it is a codec with a patent on it. You will need to buy the licenses for it from Digium.
 

Telco

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#3
Do you know how do I force g711 because the sip vendor (bandwith.com) says I am sending them g729a. (more detail) I have two sip trunks from them, Each with their own number. I can't call from on to the other. Bandwith.com says I am sending g729a but not allowing to recive g729a. How is that possible when I don't have the codecs installed. I wonder if they are re-encoding the trunks.
 

mbit

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#4
I dont know how accurate the bandwidth.com measure would be. You cant tell the codec being used until a call is initiated.

To force g711 you need to put this in your trunk

disallow=all
allow=ulaw
 

saleh

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#5
G.729 for free !
http://kvin.lv/pub/Linux/Asterisk/

add G.729 support

$ vi sip.conf
and add this line

allow=g729

in this file you can enable or disable Codec

next step in the FreePBX Web Interface or in your PBX configuration add this

disallow=all
allow=g729

or

disallow=all
allow=ulaw&g729


i hope this help you
 

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