SIPez adds HD Voice support for Android

SIPez adds support for Wideband and Ultra-Wideband Audio

SIPez adds WinCE, Mac OSX and VxWorks support for sipX

SIPez Sponsors SIPfoundry

SIPez provides consulting and development services in the VoIP and Internet communications space. We are knowledge leaders in the communications industry and active contributors in the IETF, SIPfoundry and the Sip Forum with a proven record of designing and building interoperable solutions. SIPez's experience, knowledge and resources will help your company rapidly develop new VoIP products and services, migrate legacy solutions or voice-enable your application. We can provide expertise during your complete product life cycle.


  • SIP
  • VoIP
  • Media Processing
  • Instant Messageing (IM)
  • Presence
  • Security using TLS and S/MIME
  • Real Time Protocol (RTP)
  • Scalability
  • Quality of Service (QoS)
  • NAT/Firewall traversal
  • Embedded Systems


  • Hosted VoIP solutions
  • Media & Conference Servers
  • IVR Servers & Applications
  • PBX functionality
  • Phones (Appliance & Soft Client)
  • Flash to SIP Client
  • Audio Processing
  • Presence Servers
  • Proxies
  • SIP Stacks
  • Call Control
  • CTI
  • Gateways


  • Requirements Gathering
  • Architecture
  • Product Management
  • Project Management
  • Software Design
  • Software Development
  • Interoperablity Testing and QA
  • Performance Benchmarking
  • Security Analysis
  • Training & Education
  • Hardware Design