G.729 Codec License Usage with IP Trunks

Asterisk Asterisk Support
1

Good Morning All,
Based on the below license link about G.729, could some one answer this question regarding Pass-Thru usage:

If I connect an Asterisk server to an AVAYA CM via an H.323 IP Trunk and that trunk uses G.729 Codec as a compression standard, that then connects to another AVAYA CM via a SIP Trunk using G.729 as the compression standard. Do I need to purchase a License or being that both inherently support G.729 is this considered a Pass Thru Call?

Basically I am using the Asterisk as the Gateway between the systems.

voip-info.org/wiki/view/Aste … +pass-thru

Thank you All for your assistance.

2

Depends on whether you source any tones, or want to do voice recording.

Also, you need to be careful with originate, as it defaults to a signed linear codec. Same for call files.

3

David,
Thank you for the response and information. I am not doing any voice recording, this would just be an IP Trunk from an AVAYA CM to another AVAYA CM or AVAYA Endpoint that inherently uses G.729 as a codec( i.e. IP Phone)./ If I read the license correct because it is inherent in the devices they should not use a license./

Thank you.

4

You need to look at the actual dialplan.

If you explicitly call Answer or Progress in the dialplan, there is a good chance you will consume a licence, or the caller will fail to here a call progress tone.