Telecommunications line test extension apparatus
Telecommunications modem deactivation control method and...
Telecommunications network
Telecommunications switch configuration
Telecommunications switch with integral feature installation cap
Telecommunications test system including a test and trouble shoo
Telecommunications test system including a test and trouble shoo
Telephone accessory
Telephone answering device with improved pager access feature
Telephone bridge method and apparatus
Telephone call saving system and method for an integrated servic
Telephone control module and user site network and methods of op
Telephone handset off switchhook and call holding alert system
Telephone inadvertent off-hook condition detector
Telephone line and instrument tester
Telephone line circuit testing jumper plug
Telephone line fault locating device
Telephone line integrity monitoring system
Telephone line longitudinal balance tester and method
Telephone line monitor/alarm