Software upgrades speakerphone performance

Grandstream Networks uses advanced acoustic echo cancellation software to dramatically improve the speakerphone quality on its GXP2020, GXP2000 and BT200 IP phones.

Grandstream Networks, a leading designer and manufacturer of next-generation IP voice and video products for broadband networks, uses TI's advanced acoustic echo cancellation (AEC) software to dramatically improve the speakerphone quality on its GXP2020, GXP2000 and BT200 IP phones, all of which are based on TI's TMS320C5000 digital signal processor (DSP) platform.

A speakerphone enhancement firmware release based on the TI's new advanced AEC software will be available at the end of this month.

Grandstream selected TI because its AEC software is fully compliant with the ITU G.167 standard and features a superior acoustic echo cancellation algorithm with 160ms tail length, sophisticated nonlinear processing (NLP) and double talk detection, and advanced automatic gain control (AGC) which help significantly boost the performance and quality of a full duplex hands-free speakerphone.

TI's AEC works with all of the voice codecs that are supported on Grandstream IP phones including G.711, G.723.1, G.729A/B, iLBC, GSM and wideband G.722.

It also supports up to five-way conferencing for GXP2020 and three-way conferencing for GXP2000 and BT200 in speakerphone mode.

The new firmware release incorporating this new AEC algorithm will be available for download on Grandstream's website at the end of this month.

"We are very excited to announce this speakerphone enhancement firmware release for our business and residential IP phone product lines", says David Li, CEO of Grandstream Networks.

"Grandstream and TI engineers collaborated closely to fine tune the AEC algorithm on most of Grandstream's IP phone models and they successfully improved the speakerphone performance and voice clarity significantly".

"This development underscores the close partnership between Grandstream and TI as well as our strong commitment to continuously enhancing and improving our products for our customers".

"We are very pleased that TI's acoustic echo cancellation and DSP technology are enabling Grandstream to deliver higher-quality and better performing IP phones around the world", says Fred Zimmerman, Executive Director, VoIP Customer Premises Solutions, Texas Instruments.

"This collaboration continues our long-standing relationship with the company, further demonstrating TI's commitment to delivering advanced silicon and software solutions that power IP phones and gateways for a variety of IP-based applications".

Grandstream SIP Phones support multiple-line conferencing, voicemail and advanced telephony features including call waiting, call park, call transfer, hold and mute.

The BT200 is a single line SIP phone designed for the residential and small office/home office (SOHO) markets that offer rich feature functionality, custom ring-tones and a 100Mbit/s port for a very affordable price.

The GXP Series includes two models - GXP2000 (four lines) and the GXP2020 (six lines).

The series offers power-over-Ethernet (PoE), dual 10/100 autosensing Ethernet ports, individual SIP account/line and XML capabilities.

The GXP Series is expandable using a 56 button expansion card, offers support in six languages, AES encryption and remote configuration for quick deployment over a large network.

The GXP2020 advanced features includes four programmable XML capable buttons, five-way conferencing, two headset jacks (RJ11/2.5mm) and a large high-resolution backlit LCD and an elegant new design.

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