Call optimization in ad-hoc conference calls

Call optimization in ad-hoc conference calls

Call processing with voice over internet protocol transmission

Capability management for automatic dialing of video and...

Captioning for tele-conferences

Client-side echo cancellation for multi-party audio...

Combined conferencing and calling

Communication method, communication system, and connection...

Communication node receipt of node-output information from...

Communication system with connectable interface device

Communication system with connectable interface device

Communication terminal apparatus

Communucation device for providing multimedia in a group...

Computer-based telephone call conferencing

Computer-based telephone call conferencing

Conference call bridge arrangement

Conference call initiation

Conference call initiation

Conference call on a personal handy phone system portable statio

Conference circuit for encoded digital audio