Communications

Telephonic Communications

Multi-pbx Interconnection

No:7116775

Apparatus and method for managing blf information in an inter-networking system

No:5483589

Apparatus and method for routing control for composite network

No:5862211

Automatic simultaneous voice-and-data call setup for remote-site servicing

No:5490212

Call-routing method for a virtual private network as well as service computer and exchange therefor

No:5764750

Communicating between diverse communications environments

No:5031211

Communication circuit switching or parallel operation system

No:7139386

Communication system and method for controlling features in a communication system

No:4600812

Communication system having abbreviated dialing access

No:4942602

Coordinated transfer of voice and information through a network of digital switches

No:6643709

Device and method for transporting and converting protocol messages from one protocol into another

No:4313036

Distributed cbx system employing packet network

No:6091720

Dynamically controlled routing using dynamic management of intra-link traffic to virtual destination nodes

No:5526414

Dynamically controlled routing using virtual nodes

No:5422941

Extension of centrex services

No:6343086

Global packet-switched computer network telephony server

No:7127052

Implementation of additional functions for user connections having individually configured performance criteria

No:6418146

Integrated communication center functionality for wap devices

No:5185741

Inter-network connecting system

No:5652787

Management system for public and private switched networks

No:6882725

Method and apparatus for connecting to ip private branch exchange

No:7009962

Method and apparatus for providing forwarding on ring-no-answer for remote telephone extensions using voice over packet-data-network systems (vops)

No:7471785

Method and system for controlling outside incoming call transfer in network-connected private branch exchanges

No:6567514

Method and system for processing telephone calls via a remote tie-line

No:6967947

Method and system for providing controllable enhanced call service features at mobile locations

No:7174189

Method and system for providing mobility to enhanced call service features at remote locations

No:5878121

Method and system for selecting and transmitting optimum route

No:5550904

Method for identifying the originating network at the terminating network for transnetwork calls

No:6687351

Method for providing telephone services for commercial classes of service

No:5509061

Method for storing messages in networked message memory units

No:6160817

Method for using narrowband performance features provided in broadband communications terminals, in broadband networks

No:5778058

Method of adding a new pbx and new pbx port to an existing pbx network

No:6088438

Method of and apparatus for networking a plurality of private branch exchange systems using isdn lines

No:6480595

Method of communication through leased line in virtual private network

No:5805690

Method of distributed call control in a distributed transit pbx system

No:4811334

Method of operation of a nodal telephone and data communication network to provide specific facilities in changeable domains of the network

No:6430282

Methods and apparatus for originating voice calls

No:7474746

Multi-user telephone system

No:3736383

Multicustomer centralized call diverter

No:3215784

Multicustomer private branch exchange

No:5260990

Multiple integrations unit for coupling different switching systems to a message storage system

No:5974132

Network architecture for routing of adjunct based services

No:6873699

Network linkage type private branch exchange system and control method thereof

No:5995609

Number portability for a cluster of switches

No:4220821

Off-hook initiated demand assignment communications

No:4594477

Pbx equipment with dial signal modification

No:5649005

Pc with telephony exchange function

No:5805692

Private automatic branch exchange (pabx) system with transparent computer supported telecommunications applications (csta) functionality

No:5422943

Private branch exchange networks

No:6571108

Private branch mobile communication system and method

No:5670950

Private communications network system and method of authentication for a mobile station used in private communications networks