Patent ID: 7535891
Filing Date: 2009-05-19
Classification: G10L,H04L,H04M

Abstract:
1. A method, comprising: receiving, at a subscriber line interface card chipset of an electronic loop provisioning line card, an analog signal from a POTS subscriber loop circuit, the subscriber line interface card chipset adapted to handoff pulse code modulated samples to a digital signal processing chip of the electronic loop provisioning line card, the digital signal processing chip adapted to encode the pulse code modulated samples into a compressed format, the compressed format a low delay code excited linear prediction format, the digital signal processing chip adapted to expand encoded samples from a packet network and delivering samples to the subscriber line interface card chipset, the subscriber line interface card chipset adapted to convert the delivered samples to an analog format the electronic loop provisioning line card adapted to utilize an enhanced mode, the enhanced mode adapted to use a codec specified in G.722 as a default codec; automatically determining that customer premises equipment accommodates a Dolby Digital AC-3 signal; responsive to said determination that custom premises equipment accommodates said Dolby Digital AC-3 signal, automatically substituting a Dolby Digital AC-3 codec for the G.722 codec; via the enhanced mode, quantizing the analog signal into a plurality of digital samples; running said Dolby Digital AC-3 codec on a signal processor installed on the electronic loop provisioning line card; encoding the plurality of digital samples via said Dolby Digital AC-3 codec; and converting, via conversion instructions running on the digital signal processor, the encoded plurality of digital samples to a plurality of VoATM packets.