Plus it depends on the number of frames per packet, which varies for different codecs, from product to product, and even from call to call. The overhead itself doesn't really change that much, but as a ratio to the payload it varies quite a bit. Paul Long Smith Micro Software, Inc. -----Original Message----- From: Ami Amir [mailto:Amir@TLV.RADVISION.COM] Sent: Friday, February 11, 2000 8:02 AM To: ITU-SG16@MAILBAG.INTEL.COM Subject: Re: H.323 Overhead Hi Chris What do you mean by overhead - is it the ratio between th enet payload and the header and packet total size? Ami -----Original Message----- From: Christopher Iles [mailto:christopher.iles@CRC.CA] Sent: Friday, February 11, 2000 3:57 PM To: ITU-SG16@mailbag.cps.intel.com Subject: H.323 Overhead Hi all Would someone know the % of overhead in H.323 & H.320 Thanks for any help you can provide Chris Christopher Iles Senior Technologist COMMUNICATIONS RESEARCH CENTER e-mail: christopher.iles@crc.ca 3701 Carling Ave Tel office: 613 998 2734 Ottawa, Ont. K2H 8S2 Ops Room : 613 998 2374 ATTN: BLDG 46