Token passing arrangement for a conference call bridge arrangement

摘要

A user terminal (10) using an internet protocol using session initiation protocol to interconnect a number of user terminals (11-13) in a conference call. A conference bridge (30) or user terminal (10) detects speech of one of the user terminals (203). A "babble" timer is started (207). The speaker is allowed to continuously speak until silence is detected (217) or until the "babble" timer timers out (211).