pulver.com
A collection of information on the protocol. Contains news, reports and an IP telephony job noticeboard.

Session Initiation Protocol (SIP)
FAQs, background materials and lists of current work in this field.

SIP Compose Group
A working group experimenting and documenting the protocol. Contains various internet technical resources.

SIP Forum
A membership based forum. Also contains a news board.

SIP Wiki
Wiki based resource containing information and links.

SIP411 Directory Services
A Yellow Pages style directory of SIP addresses.

Sipcall
A UK based service provider. Also contains hardware related links and protocol white-papers.

SIPfoundry
An international open source community providing VoIP solutions and technology based on the SIP standard.

SIPquest Inc.
Software component developer for service providers and telecom equipment vendors.

Results: Previous 1 2 3 Next