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VoIP processor ensures call confidentiality

Posted: 12 Aug 2009     Print Version  Bookmark and Share

Keywords:VoIP  processor  Ethernet 

SC14452 VoIP processor

SiTel Semiconductor has added the SC14452 to its Green VoIP processor range. The chip features integrated DECT support that enables stand-by power figure of 350mW. The processor also provides dedicated cryptography features to ensure complete call confidentiality. In addition, the highly integrated solution helps reduce BOM for enterprise VoIP desktop phones and IP-DECT base stations, while delivering sound quality for clear communications.

The SC14452 integrates a Fast Ethernet 10/100 MAC, enabling power savings of some 200mW compared to other chips. Net system power for a VoIP desktop phone based on the SC14452 is just 353mW in idle mode, complying with the more stringent phase 2 of the EU directive 2005/32/EC. It uses 556mW during a G.722 call and 567mW during a G.729AB call. The integrated Ethernet MAC also cuts BoM costs for desktop phones.

Its hardware cryptographic engine accelerates DES, 3DES and AES computations for confidentiality. It supports all IP security protocols including TLS-SRTP and DTLS-SRTP. Also, the embedded memories allow the new processor to handle four IP calls simultaneously—allowing easy-to-use five-way conference calling independent of the codec and encryption used.

Also, the SC14452 offers integrated support for DECT, CAT-iq, DECT 6.0 and KDECT cordless telephony. It can be easily combined with SiTel's LMX4180 transceiver module for combined VoIP/DECT enterprise applications. This enables cordless accessories such as headsets and handsets to be connected, creating PANs with ranges of up to 100m and promoting greater mobility within businesses.

The SC14452 features a 16bit CompactRISC processor plus two user-programmable Gen2DSPs delivering a total of 240 MIPS of processing power. It offers outstanding sound quality, due to SiTel's Perfect Acoustic Echo Canceller, 32kHz codec for wideband audio and integrated class D amplifier. It also offers a wide variety of peripheral interfaces including master/slave PCM, UART, SPI and dual-access bus.

SC14452 development kit

"SiTel is committed to offering customers the very best in voice ICs," said Mark De Clercq, product marketing manager at SiTel. "The SC14452 lives up to that commitment. It provides a state-of-the-art solution for the enterprise VoIP market that delivers outstanding features and quality at a low price. Moreover, its industry-low power consumption figures mean low operating costs for end users."

In mass production and available for sampling now, the SC14452 is priced at around Rs.295.53 ($6.05) per piece for 1,000 units. It is supported by a development kit that targets a multitude of applications, including low- to high-end VoIP desktop phones (with optional DECT cordless telephony), IP-DECT base stations and Analogue Terminal Adapters. The development kit comprises all necessary hardware as well as SiTel's Rhea VoIP software suite and related documentation.





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