The present invention switch transcoder (18) provides transcoding of speech for a cellular system in which speech from a plurality of E1 lines (7) may be compressed for outputting to a much smaller number of T1 lines (8) so that multiple conversations greater in number than previously possible can be...http://www.google.se/patents/US5526397?utm_source=gb-gplus-sharePatent US5526397 - Switching transcoder
