SIP vs H323

Hi guys, now a days im making a report on

Which is better for asterisk: SIP or H323. (Incase we r deploying a call centre with asteriskPBX, zap and IAX aside, lets focus on SIP and H323)

anybody who knows about any article, or any kind of information…plz share

Well i myself stumbled upon a link on google:

packetizer.com/voip/h323_vs_sip/

its good