
Who is using SIP?
8/31/2005 Copyright - Ahlgren 2005 6
AhlTek
ATT Call Advantage, VoIP, US & Canada, $30/mo
Vonage VoIP, US & Canada, $25/mo, 500,000 Subscribers!
SIPphone VoIP US & Canada, $0/mo, $0.02/min for PSTN calls
Microsoft MSN Chat, Windows XP softphone (350M users in 2005)
IBM Lotus Instant messaging
HP HP Open Media Platform
Apple iChat
Sun Java API’s for component and application development
Cable TV TW, Instant messaging, Voice and Video, presence
3G cellular Control protocol for next generation cell phones
Clearwire (Craig McCaw) VoIP roll out, $100M from Bell Canada
Carriers Worldcom, Song Networks, Telia, Delta Three, Level3
AT&T, Radiant Telecom and BT
Comentarios a estos manuales