Sonim is committed to standards-based interoperability. The company has driven creation of the OMA PoC 1.0 standard for PTT services. As a member of the Open Mobile Alliance (OMA) and a founding member of the Industry Consortium for Push to talk over Cellular, Sonim sponsored the OMA PoC 1.0 standard and has led interoperability testing efforts with all other vendors of PTT solutions.

The OMA PoC 1.0 standard is built in cooperation with the IP Multimedia Subsystem (IMS) standard as defined by 3GPP and IETF specifications. OMA has defined the evolution path of the OMA PoC standard as the current 1.0 release and a 2.0 release now in development. OMA PoC 1.0 is a collection of six specifications: Requirements, Architecture, Signaling Flows, Group/List Management, and two User-plane specifications (Transport and GPRS). Together they form a complete set of specifications for an IP-based PTT application. OMA PoC 1.0 was ratified and approved by OMA members in June 2006.  OMA PoC 2.0 extends the network architecture and presence-enabled user experience of OMA PoC 1.0 to additional "Push-to-X" applications, including Push-to-Voicemail and Push-to-Video Stream, both of which will be powerful communication tools for enterprises and their field force organizations.

The net result for Sonim's customers is that they will be able to use the Sonim XP1 handset in conjunction with PTT services from all participating mobile operators – including all 3rd party OMA PoC handsets that will be deployed in the years to come.

Supported Standards and Protocols

  • 3GPP/3GPP2/IETF & OMA PoC 1.0 Compliant
    Sonim solutions are fully compliant with 3GPP/3GPP2/IETF/OMA PoC 1.0 standards and work across GPRS/EDGE/WCDMA, CDMA/CDMA 2000 networks.
  • SIP (Session Initiation Protocol)
    Sonim PoC calls are established using the standard SIP protocol (RFC3261), also compliant with the IMS standards.
  • SIMPLE
    Sonim presence and availability information is delivered via the SIMPLE protocol, a SIP extension defined by IETF and 3GPP.
  • XCAP
    Sonim address books are created, edited and deleted via XCAP, an XML extension adopted by OMA for contact list interoperability.
  • RTP/RTCP
    The VoIP transport protocol used for the Internet – and now even wireless.

Industry Certification

IP52 & GCF Certification

Environmental Responsibility

RoHS Compliance

WEEE Compliance