fg microtec - Voice over IP over Cellular - Voice Call Continuity (VCC)

fgVoIP Demo video

This demo has been recorded during a live roaming session from VoIP to GSM and back.

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Partners & customers:

fg microtec is a Member of the Open Mobile Alliance

fg microtec supports:

Standards compliant

Next generation voice services over W-LAN and Cellular Networks

Take a step ahead in the wireless communication market by offering your customers voice over IP telephony capabilities in your handsets. fgVoIP is an embedded application, which contains all necessary elements and optimized technology to offer high-quality and reliable VoIPoW calls for private and corporate users.

fgVoIP can be used for GSM and IP based voice calls seamlessly. Call scenarios may include free calls to any other VoIP user, calls to the PSTN and also to mobile users through IP carrier connectivity at very low call fees. fgVoIP has been already successfully tested with major VoIP carriers worldwide, including operation behind firewalls.

Voice Call Continuity (VCC)

Corporate users "on-the-move" will be able to connect to their corporate IP PBX with their cellular handsets in order to reach any other corporate user or even make calls to any fixed or wireless telephone number as if they were sitting at their office's desk. When the user leaves the W-Lan coverage area, the call is seamlessly handed off to the GSM network.

User benefits

End users can benefit from making phone calls to other VoIP clients or to fixed and mobile telephone numbers located in the PSTN and PLMN, respectively, at very low fees using international VoIP carriers and gateways to public telephone networks. Corporate users are able to connect to their home IP PBX from anywhere in the world and use all its features and functionalities as if they were sitting at their own desk inside the corporate network.

How does it work?

fgVoIP is based on open standards currently widely deployed for IP multimedia communication. On the control plane, the Session Initiation Protocol (SIP) and Session Description Protocol (SDP) carry the necessary information for registration, access control, session setup, session control, capabilities exchange and session termination. On the user plane, the Real Time Protocol (RTP) and Real Time Control Protocol (RTCP) are used for encapsulation and transmission of the voice frames over the packet network.

When connected to the WLAN network, a special icon will be displayed on the screen. The user will know that the next call will be connected automatically thru a VoIP carrier or to his corporate network. Incoming calls can also be delivered to the user through this connection. In order to provide an enhanced user experience and higher QoS, the media flow is optimized in terms of framing, buffering and codec transmission according to fg microtec's QoS mechanisms and expertise in VoIP and wireless real-time embedded applications such as Push-to-Talk over Cellular (PoC) and Instant Messaging.

Feature set

Suitable for feature phones, smartphones & Pocket PCs
IP PBX corporate access
WLAN (IEEE 802.1x) and 3G networks supported
SIP support according to RFC 3261
SIP over UDP and TCP
3GPP IMS Release 5 support
RTP/RTCP support according to RFC3550
STUN support for NAT transversal
Contact list management and Phonebook integration
Support of DTMF according to RFC 2833
AMR, GSM FR and G.711 (µ-Law, A-Law) speech codecs
Additional codecs available upon demand
Incoming and outgoing VoIP calls
Preconfigured VoIP carriers
Supplementary services support
Additional customization available

Our expertise at your disposal

Benefit from fg microtec's wide experience in embedded systems and real-time wireless applications. fg can provide a complete turn-key solution offer, including customized implementation, optimization and integration of fgVoIP in your platform. No matter if you plan a WLAN enabled feature phone or a smartphone, our expert engineers will support your team in the porting and integration process. fgVoIP is a stable and reliable solution designed for fast market introduction with a complete feature set.