Telephone exchange for wire telephone and radio telephone
Telephone hold feature
Telephone intercept system
Telephone line concentrator without switching matrix
Telephone line selector for use with a PBX
Telephone system with call forwarding apparatus and method
Telephone terminal equipment and terminal control program
Temporary message routing and destination selection
Transfer function for messaging platform in public telephone...
Transfer function for messaging platform in public telephone...
Transfer service method for telephone network
Transfer-connect telephony services utilizing automated...
Transferring a call to a backup according to call context
Transferring a communications exchange