G.729 is a compromise of bandwidth vs. CPU power. It takes more CPU but less bandwidth. It depends on what your want to do with the G.729. Pass through does not involve any transcoding, that I know of, so it is just an RTP packet movement, no different than the cost of other pass through codecs. I did work on converting G.729 to G.711 to disk storage in real time and that took about 3% of a Xeon CPU for full duplex. Memory wise each convert call might have used 640KB in buffers and trash, but not much. Race Vanderdecken Code Tyrant -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Khaled Chehab Sent: Tuesday, May 15, 2007 2:51 PM To: [EMAIL PROTECTED] Cc: [email protected] Subject: [asterisk-users] cpu usuage Do any one knows the formula to calculate memory and cpu usuage for channel on g729 codec,to know the hardware required for 100 concurrent call. Regards _____
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