Asterisk is using "pass through". The PBX simply has to relay the RTP packets
unchanged from one device to another. If you are going from a phone using
codec tupe A to codec type B, Asterisk must perform a conversion which requires
support for both codecs.
iTS [EMAIL PROTECTED] wrote:
Hi, where can I find info on configuring pass-through mode.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of SW Sent: Jueves, 18 de Diciembre de 2003 11:29 p.m. To: asterisk users Cc: Clif Jones Subject: [Asterisk-Users] G729 question
Hi Clif,
My experience with G.729 and asterisk is not good.
My first registration was good, it worked. Then I bought more license and tried to upgrade it, it blew everything off. Still waiting Digium support to give me a helping hand.
If you use pass-through feature then I guess you are fine. I have SIP users going to h.323 g/w and I need g.729. So now I have it in pass-through mode, I think that requires less CPU overhead and I do not have to mess with licenses.
Cheers
SW
Message: 5 Date: Thu, 18 Dec 2003 13:59:06 -0500 From: Clif Jones <[EMAIL PROTECTED]> To: asterisk users <[EMAIL PROTECTED]> Subject: [Asterisk-Users] G729 question Reply-To: [EMAIL PROTECTED]
I am thinking about using the G729 codecs on my endpoint devices and purchasing some G729 licenses for Asterisk but I have several questions:
1. Which G729 codec is sold by Digium for Asterisk, G729, G729A, B...I? 2. If I have G729A on one end and G729B on the other, are they compatible?
I have looked all over the place for question 2, but without buying the ITU docs I cannot seem to find this answer. I know that G729A is low complexity which seems to be what Cisco 7960's use but I have some others that support G729B which has comfort noise and reduced transmission during silence. If anyone knows how the different G729 codecs interoperate I would be eager to know. Thanks.
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