About ADAMS P F
About British Telecom Research Lab., Suffolk, GBR
About COX S A
About British Telecom Research Lab., Suffolk, GBR
About CARPENTER R B P
About British Telecom Research Lab., Suffolk, GBR
About COLE N G
About British Telecom Research Lab., Suffolk, GBR
About Conference Record. IEEE Global Telecommunications Conference
About digital communication
About echo suppression
About Communication systems in general
About 長距離伝送
About ディジタル加入者線
About 送受信器