Detecting faults in subscriber telephone lines
Detecting faults in subscriber telephone lines
Device for measuring analog telephony signals
Diagnostic channel wakeup sequence for network managed fractiona
Diagnostic device for a telephone system
Digital subscriber line diagnostic system
Digital subscriber line diagnostic system
DMT test method for determining ADSL capability of cables
DSL communication method of performing an interruption and a...
DSL system estimation including known DSL line scanning and...
DSL system training
DSL tester