Avaya UK

Agilent Technologies, Inc.

Avaya Inc.

Clifford Neil Didcock

Michael Geoffrey Andrew Wilson

Charles Ronald Cook

Charles Graeme Ritchie

Ruth E Knap

There is disclosed a method of routing a call in a communication system, comprising: defining a set of availability modes for at least one user, each mode including at least one identifier identifying at least one originating telephone number; defining a routing rule for each of said modes; and routing a call for the at least one user in dependence upon the routing rule associated with an active availability mode of the user and the originating telephone number of the call.

Call routing based on user availability

There is disclosed a call answering system comprising storage means for storing a user specified address; means for recording voice messages associated with the user; and forwarding means for forwarding recorded voice messages to the user specified address.

Simplified call answering service

There is disclosed a unified messaging system in which a voice mail domain object comprising a plurality of fields is provided. At least one of such fields is selected to be defined as an open field such that it is accessible to an administration application of the system. The open fields are preferably stored as a voice mail domain summary in the e-mail directory of the unified messaging system.

Architecture for unified messaging

There is provided a messaging system comprising at least one distributed front-end messaging system and a centralized data store associated with said at least one distributed front-end messaging system, in which system the centralized data store includes means for storing data associated with users of the at least one distributed front-end messaging system, the at least one distributed front-end messaging system further including a respective at least one cache means for storing at least a portion of the centralized data associated with users of said at least one distributed front-end messaging system such that at least one messaging function can be provided to users of said at least one distributed front-end messaging system in dependence on the data stored in said cache means. A centralized messaging system provides access to all stored data associated for all users associated with at least one distributed front-end messaging system.

Flexible distributed/centralized architecture for voice/unified messaging system

A messaging architecture including at least two messaging systems, each messaging system being associated with a telephony switch connected to at least one messaging system subscriber and a mailbox for providing voice messaging services for calls to said at least one messaging system subscriber, the mailboxes for each of the at least two messaging systems being accessible via each messaging system, wherein each telephony switch is adapted to selectively route a call for a subscriber mailbox to one of the messaging systems for access to the subscriber mailbox.

Optimal call coverage method and apparatus

A DC feedback control circuit for compensating for a DC voltage level shift in a transimpedance amplifier circuit having a transistor as a high speed switching device. The DC feedback control circuit includes a filter for determining a DC voltage level at an output of the amplifier circuit and a differential pair of transistors for comparing the DC voltage level with a reference voltage. A pair of current mirrors mirror a current dependent on the comparison of the DC voltage level with the reference voltage and apply the mirrored current to an emitter of the transistor so as to maintain a substantially constant bias current through the switching transistor.

Growing community of inventors

Wantage, United Kingdom

Clifford Neil Didcock