D2 Technologies

IP Desk Phone

IP Speaker Phone

Video Phone

• Voice functionality

IP phones and IP-PBX adoption has grown to the point where these VoIP products now out ship traditional PBXs and handsets.  The rapid growth is due to reduced cost and increased productivity that IP telephony brings to the enterprise.  IP phones can provide high quality audio through the use of wideband telephony, presence information, and easy access to many new IP-PBX functions. 

IP desk phones and IP speaker phones are becoming standard in business of all sizes.  Early adoption of IP phones in the consumer market is also occurring.  IP phones need high voice quality, rich VoIP features, and full-duplex speaker phone functionality.

The vPort IPP software solution of D2’s vPort product family provides ODMs/OEMs with an optimized VoIP solution for IP phone handsets and speaker phones.  It augments the excellent voice quality provided by the vPort engine with the specific functionality required for the IP phone/ speaker phone application. vPort IPP also minimizes memory and CPU impact for low cost implementation.  It is a proven solution with leading voice quality, performance and interoperability.

vPort IPP Technical Specifications

Caller ID

Full Distributed Unicast Conferencing

Call forwarding

Call Return

Call Blocking

Do not Disturb

Call Waiting

Call Waiting/ Caller ID

Speed Dial (Dial Plan)

Multiple Line Appearances

Distinctive Ring


Internal calls

G.711-Alaw; G.711-MuLaw, G.729AB and G.726 Voice Compression

DTMF and Call Progress Tone Generation

Packet Loss Compensation

Silence Compression per G.711 Appendix I

Call Waiting

Call Waiting Caller ID

Custom Ring Cadences

Gain Control (Volume adjust)

DTMF Relay

SIP RFC 3261 & 1543

RTP & RTCP RFC 3550 & 3551


Acoustic Echo Cancellation

Full Duplex Speakerphone

Voice over IM (VoIM) :

D2’s vPort Product Family

vPort leads the market in performance and efficiency, enabling networking, signaling and voice processing functions to execute as an integrated solution on a single processor. This in turn offers substantial advantages in bill-of-materials (BOM) cost, power consumption and ease of integration. The software is highly optimized not just for voice quality, but also for a small memory footprint, low processor (CPU MHz) impact and low latency, and adds true real-time performance to non-real-time OSs.

Designed for flexibility and portability, vPort can execute on both RISC and CISC platforms under industry-standard operating systems. It is currently optimized for both ARM and MIPS processor architectures under the VxWorks, Nucleus and LINUX operating systems. vPort’s virtual DSP architecture enables the voice DSP functions to run as “soft DSP” on a RISC processor or as DSP code on a hardware DSP core, providing further design flexibility.

The support of multiple processor architectures and OSs, along with the unique virtual DSP capability, allows OEMs to choose best-of-breed components and avoid being locked into a particular hardware platform or architecture. It also simplifies software development, support and maintenance, since all the software operates under a single environment using one set of tools. Because of its modular architecture, vPort can be quickly modified for customer-specific applications and runtime platforms.