Tele-Seminar is a seminar or talk delivered through the phone. The person who is taking the seminar will announce the seminar and will provide a number for the attendees to dial in and join. There can be an authentication mechanism also.

Tele-seminar is essentially a conference call, but most of the talking will be done by the person who is taking the seminar.

Tele-Seminars are used to provide training, provide information or sell products or services to a group of people, with out reaching out to them personally, thereby avoiding the cost of travel, lodging etc.

The hardware required for this is a conference bridge. Usually conference bridges are provided by telephone operators.  We also can setup conference bridges if we can get E1 lines from the operator. Asterisk Pbx software can be easily configured as a conference bridge.