CallCentric is a FREE Broadband Phone Service allowing people to make & receive phone calls worldwide over the Internet, PortSIP customized a softphone for Callcentric in 2007.

HP purchased PortSIP VoIP/IMS SDK to integrate VoIP feature with Telecom Audio to their HPVR, this project is started in 2009 and runs well.

Philips purchased PortSIP VoIP/IMS SDK for Philips CareServant in 2007, this project is started in 2009 and runs well.

Cisco(Brazil) purchased PortSIP VoIP/IMS SDK for their products in 2010.

Siemens(India) purchased our PortSIP VoIP/IMS SDK for their IVR project in 2011.

Siemens Enterprise Communications purchased our PortSIP VoIP/IMS SDK in 2012.

Agilent purchased PortSIP VoIP/IMS SDK in 2011 for VoLTE project.

PortSIP customize a video softphone for netTALK in 2010.

PortSIP customize a video softphone for FUJITSU, Hong Kong in 2012.

PortSIP provide a softphone and SDK to Qualcomm Incorporated for 4G VoLTE test in 2012.

PortSIP customize a video softphone for LEVOP in 2012.