WorldSip is now the leading provider of Hosted PBX and IP Centrex applications. We also have the greatest services of our best communation solutions through channel partners , which not only validates our leadership position but also enables us to provide maximum interoperability to our customers.Our customers in Telecom industry, such as Communications Solutions, Internet Telephony Services Provider and Network System Intrigation,have recognized our
" Turnkey Solutions for Internet Telephony ".



   Features include:


     Fully automated billing interface
     Extensive account management
     Instant account setup or deactivation





Sip History

Internet Engineering Task Force (IETF) protocol Separate SIP WG established in September 1999.
Sip Inventors
Inventors: M. Handley,
H. Schulzrinne, E. Schooler
and J. Rosenberg Became “Proposed Standard” and RFC 2543 in March 1999 in MMUSIC WG.
Sip Features
Now new SIPPING (applications) and SIMPLE (presence and instant messaging) WGs using SIP.
RFC2543bis-09 I-D became RFC 3261 in June 2002

Delivers integrated, high performance technologies that improve the performance and operational efficiency of critical network resources.


Delivers softswitch based VoIP solutions that enable service providers to deploy converged communication networks.

Delivers full-service custom technical support to carrier and enterprise customers who want to ensure satisfaction.

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