Method of controlling operation of a multi-line telephone appara
Method of displaying caller identification for abandoned call in
Method of improving computer communication speed in key telephon
Method of monitoring digital line signal in private exchange...
Method of recovering speech path of pre-engaged call on restarti
Method of selectively connecting a received telephone call by ut
Microprocessor controlled telephone unit
Multi-line access module for telephone set
Multi-line telephone communications system
Multi-line telephone system
Multifunction two line telephone system
Multiline telephone apparatus
Multiple line self-contained telephone
Multiple party telephone control system
Multiple phone line adaptor
Multiple platform voice processing system with optimized...
Multiple subscriber implementing method in key phone system
Multiplexed data channel controlled telephone system