LandOfFree - US Patents - Listing for Telephonic communications,Plural exchange network or interconnection,Interexchange signalling

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Data calls using both constant bit rate and variable bit...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Data messaging method

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Data transmission via a public switched telephone network

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Device and method for improving the load distribution in a...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Digital dialed digit unlock method and system

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Direct dialing-in method in a pabx

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Direct inward-outward dialing trunk circuit

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Direct route ISDN primary route interface

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Direct route ISDN primary route interface

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Distributed signaling system seven call handling system

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Distributed telephony management

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Duplex structure signal transfer point system for common channel

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

DX circuit

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Dynamic concentration of announcement circuits

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Dynamic control of multiple heterogeneous traffic sources...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Dynamic control of multiple heterogeneous traffic sources...

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Dynamic STP routing in response to triggering

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Dynamic updating of SCP through ISUP messages

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Electronic private branch exchange