Calling number verification service

Calling party announcement message management systems and...

Calling party name delivery to digital phone subscriber

Calling subscriber information notification

Client-server network for managing internet protocol voice...

Common visual and functional architecture for presenting and...

Common visual and functional architecture for presenting and...

Common visual and functional architecture for presenting and...

Communication apparatus

Communication apparatus and communication method

Communication apparatus and storage medium

Communication apparatus connected to an exchange network...

Communication apparatus connected to an exchange network...

Communication apparatus connected to line of switching network p

Communication apparatus for providing presence information

Communication apparatus having a redial function and a simplifie

COMMUNICATION APPARATUS, INFORMATION DISPLAY METHOD,...

Communication support system in which a ringing sound...

Communication system and its accounting method

Communication system for processing caller ID information