Texas Instruments DSP Powers Grandstream Networks' GXP-2000 Enterprise IP Phone

Grandstream chose TI's TMS320C5501 DSP because of its high performance for advanced digital signal processing and affordable cost. The C5501 DSP allows Grandstream to offer superb voice clarity, enhanced security protection for device provisioning and private communications, and all the popular PBX phone features on its GXP2000 enterprise IP phone product, including transfer, forward, do not disturb, hold, mute, 3-way conference, intercom/paging, shared line presence, call park/pick up, speed dial, full duplex hands-free speakerphone, etc, at a much lower price level than competition. Optimized for communication devices, music effectors and portable medical devices, the TMS320C5501 fixed-point DSP is based on the TMS320C55x(tm) DSP generation CPU processor core. The C55x(tm) DSP architecture achieves high performance and low power through increased parallelism and total focus on reduction in power dissipation.

"We are very excited about working with TI and using their industry leading DSP that powers our innovative VoIP products. By leveraging the powerful processing capabilities, extended features and relatively low cost of TI's DSP, Grandstream is able to design and deliver advanced IP voice and video products with high quality, rich functions at unrivalled price points," says David Li, CEO of Grandstream Networks, Inc.

Grandstream's GXP-2000 is a next generation enterprise SIP phone that offers great features at a great price. GXP-2000 features dual 10/100M Ethernet ports that can be configured in switch or router mode, headset jack, adjustable large 130x64 graphic LCD (with support for multiple languages), four line indicators (each of which can be configured using independent SIP account), seven programmable speed dial keys with further expandability to support up to 112 additional programmable keys via add-on key expansion modules, various popular voice codecs including G.711, G.723.1, G.729A/B, GSM, G.726, and G.722 (wideband), multi-party conferencing, intercom, call forward, call transfer, BLF (Busy Lamp Field), shared line appearance and call pickup, full duplex speaker phone with acoustic echo cancellation, AES based SRTP and ZRTP for secure voice communications, XML, SIMPLE, and LDAP to allow easy integration with other applications. GXP-2000 comes with built-in Power-over-Ethernet (802.3af) and a universal power supply. With MSRP of only $119, GXP-2000 presents a tremendous value to corporate users.

About TMS320C5501 DSP
The C55x DSP CPU provides two multiply-accumulate (MAC) units, each capable of 17-bit × 17-bit multiplication in a single cycle. A central 40-bit arithmetic/logic unit (ALU) is supported by an additional 16-bit ALU. Use of the ALUs is under instruction set control, providing the ability to optimize parallel activity and power consumption. These resources are managed in the Address Unit (AU) and Data Unit (DU) of the C55x CPU.

The C55x DSP generation supports a variable byte width instruction set for improved code density. The Instruction Unit (IU) performs 32-bit program fetches from internal or external memory and queues instructions for the Program Unit (PU). The Program Unit decodes the instructions, directs tasks to AU and DU resources, and manages the fully protected pipeline. Predictive branching capability avoids pipeline flushes on execution of conditional instructions.

The C5501 DSP peripheral set includes a UART, watchdog timer, and an I-Cache. Two full-duplex multichannel buffered serial ports (McBSPs) provide glueless interface to a variety of industry-standard serial devices, and multichannel communication with up to 128 separately enabled channels. The host-port interface (HPI) is an 8-bit parallel interface used to provide host processor access to 16K words of internal memory on the C5501 DSP. The HPI operates in multiplexed mode to provide glueless interface to a wide variety of host processors. The DMA controller provides data movement for six independent channel contexts without CPU intervention. Two general-purpose timers, eight dedicated general-purpose I/O (GPIO) pins, and analog phase-locked loop (APLL) clock generation are also included.

Additionally, Grandstream leverages TI DSP for its H.264 IP video phone, the GXV-3000, a next generation advanced IP video phone based on SIP standard.
GXV-3000 features the latest H.264 real-time video codec with blazing performance, an advanced high resolution camera sensor, and a razor thin 5.6-inch TFT color LCD with stunning picture quality. GXV-3000 is optimized for evolving video and imaging standards by Texas Instruments' TMS320DM643 digital media processor that delivers more performance, spurs faster frame rates and higher resolutions and supplies real-time streaming video with advanced audio and video quality.