P.c.m. telephone system
Pabx common channel relay system
Pabx with voice mail device
Pacer pulse width signaling system for telephonic communication
Packet communication system and method of controlling same
Packet communication system using a telephone switching...
Packet loss compensation method using injection of...
Packet telephony gateway for hearing impaired relay services
Packet-based conferencing
Page card circuit for electronic key telephone system
Pager with visible display indicating unread messages
Paging amplifier for a key telephone system
Paging encoder
Paging system
Paging system for electronic telephone apparatus
Paid-to-listen-advertising
Pair gain applique
Palm pc dockable phone
Parallel call delivery at several tk network accesses
Parallel off-hook detection for both line-available and...