That's a huge subject and one that would require a very long and detailed explaination. In short however the basics are as follows: h.323 has been around awhile and is the basic standard out there. Cisco only made IP phones that supported h.323 for the longest time. They now are into SIP support as well. SIP came along and basically replaces h.323 and is more feature rich and really IMHO the future in comparison to h.323. More and more vendors are working to support SIP in their products, IP phones, firewalls, etc. As for MGCP that's the media gateway control protocol (or something like that) and deals with the communications between media gateways - more ISP related than the typical enterprise.
There are tons of documents, rfc's, writeups and so forth on this subject for further research. Good luck, Ian http://www.ccie4u.com Rack rentals and lab scenarios On 10 Mar 2003 at 3:58, Andy Tse wrote: > Hi, > > My boss asks my to setup an VoIP for our own office. While chosing > products, I find there have several different protocols in the market. Can > anyone explain the different between them? And the difficulty on > maintenance, operation and administration of those Products? > > > Thank you very much! > > Hosui Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=64990&t=64877 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
