LandOfFree - US Patents - Listing for Telephonic communications,Diagnostic testing, malfunction indication, or electrical...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system

Enhanced recording verification system

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring

Enhanced subscriber line call monitoring

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system

Entrance telephone system utilizing the public subscriber teleph

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring

Environment monitoring telephone network system

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Including fault responsive disconnection of tested component

Equipment for sending digitally pre-stored voice announcements t

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission

Equivalent working length determinative system for digital...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system

Error protected central control unit of a switching system and m

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission

ESS equipment testing device

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of audio message storage and retrieval

Evaluating performance of a voice mail sub-system in an...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of audio message storage and retrieval

Evaluating performance of a voice mail sub-system in an...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of audio message storage and retrieval

Evaluating performance of a voice mail system in an...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of audio message storage and retrieval

Evaluating performance of a voice mail system in an...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Expert system for loop qualification of XDSL services

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Extendable call agents simulator

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Extended off-hook notification via electronic communications

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – With blocking of normal usage

External analog loopback

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – With blocking of normal usage

External apparatus for monitoring a communication system

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

External detection of optional telephone services

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

External detection of optional telephone services on a...