The conference call drops abruptly for no apparent reason.

The Vector Disconnect Timer field on the System Parameters - Features screen is set to a value that is shorter than the duration of the Meet-me Conference session.

Increase the value in the Vector Disconnect Timer field.

The sound volume is too low.

The affected conference participants connect through international trunks in which central office (CO) loss plans are set for too much loss.

• Speak closer to the speaker phone.

• If you are having conference calls in a large conference room, then use a microphone for the speaker. You can also use Polycom phones that have automatic gain control.

• On the Location Parameters screen, adjust the values in the End-to-End total loss (db) in a n-party conference field. The loss can be as low as 15DB.