Telephone exchange for wire telephone and radio telephone
Telephone group identification ring
Telephone hold feature
Telephone information service system
Telephone intercept system
Telephone line concentrator without switching matrix
Telephone line selector for use with a PBX
Telephone network control system and method
Telephone network-based method and system for automatic...
Telephone number relocation guidance system
Telephone number searching system supporting automatic...
Telephone operator and agent to database communication arrangeme
Telephone operator keying arrangement
Telephone providing directions to a location
Telephone search supported by response location advertising
Telephone set, repeating device and recording medium
Telephone station voice announce device and method
Telephone status notification system
Telephone status notification system
Telephone status notification system