Line selection method and line selection system for private...

Mechanism for rejecting collect calls

Method and apparatus for controlling outgoing calls on a telepho

Method and apparatus for intelligent network call handling in a

Method and apparatus for migrating embedded PBX system to...

Method and apparatus for providing an alarm call to a remotely l

Method and apparatus for selectively blocking incoming telephone

Method and apparatus for telephone routing between PTN and PSTN

Method and apparatus in a communications system for dynamic...

Method and arrangement for connection of a computer to a...

Method and system for call screening

Method and system for connecting subscribers of a...

Method and system to bypass alternate routing plans applied to d

Method for avoiding call blocking

Method for controlling long distance calling using a multi-frequ

Method for processing forwarded telephone calls

Method for the legitimacy check of call numbers of calls incomin

Method of restricting telephone calls in a private branch exchan

Method of screening and prioritizing an incoming call

Method, apparatus, and system for filtering incoming...