OTTAWA--Zarlink Semiconductor Inc. today claimed the highest capacity for voice-over-Internet protocol (VoIP) processing in two new chips, the MT92210 and 92220, which convert time-division multiplexing (TDM) voice traffic to IP packets.
The company said the 92210 is the industry's highest capacity and most cost effective TDM-to-IP network processor. The device converts 1,000 full-duplex voice channels to IP packets through a balanced hardware/software architecture that significantly cuts time-to-market for designers implementing VoIP applications, according to Zarlink, which was formerly the semiconductor unit of Mitel Corp.
Zarlink said the device reduces the number of digital signal processors and packet processes needed in TDM-to-IP conversion, cutting total system costs by up to one-third.
The 92220 is being promoted as the industry's highest capacity device to offer two modes of conversion on a single chip -- either TDM-to-IP or voice-over-ATM (asynchronous transfer mode), Zarlink said. The processor can be configured to convert 1,000 full-duplex voice channels to IP packets or AAL2 (ATM adaptation layer type 2) voice traffic, said the Ottawa company.
"These new devices set density, price, and ease-of-use benchmarks for TDM-to-IP conversion," said Jeremy Lewis, product line manager at Zarlink. "By implementing specific functionality directly in silicon,
time-to-market is improved because equipment designers avoid the need to develop significant amounts of DSP or processor software and can increase their focus on value-added applications."
Zarlink said the two new devices are aimed at the challenges of increasing IP traffic over backbone networks. The 92210 and 92220 have been designed for a range of convergence and network access applications, including carrier-class VoIP gateways, 3G (third-generation) wireless infrastructure, and next-generation IP-enabled routers, said Zarlink.
The 92210/220 are assembly and disassembly processors that simultaneously convert both PCM (pulse code modulation) and ADPCM (adaptive differential PCM) voice channels to IP packets or ATM AAL2 cells. The devices always maintain full 1,000-channel conversion without suffering the capacity and performance degradations associated with DSP-based implementations, according to Zarlink.
The 1,000-channel processors are now available as samples with volume production expected to start in the second quarter of 2002. The MT92210 is priced at $245 in quantities of 1,000, while the92220 will cost $265. Both devices are packaged in a 528-ball plastic ball grid array (PBGA).