Group call

The group call ( multicast ) is a switching service feature of radio stations and mobile radio networks .

In a group call , a group of participants is selected and called with whom a participant would like to communicate. After the multipoint connection has been established, most services can only communicate in half duplex : one person speaks, all others listen. It can be both voice communication and data communication. The group call is in mobile radio and trunked radio possible, as in Funkrufnetzen and GSM -Netz.

literature

• Christof Linde, Jan Tino Demel: Digital radio. Publishing group Hüthing - Jehle - Rehm GmbH, Heidelberg 2011, ISBN 978-3-609-68436-9 .
• Volker Jung, Hans-Jürgen Warnecke (Hrsg.): Handbook for telecommunications. Springer Verlag, Berlin / Heidelberg 1998, ISBN 978-3-642-97703-9 .
• Christof Linde: Structure and technology of the digital BOS radio. Franzis Verlag GmbH, Poing 2008, ISBN 978-3-7723-4216-5 .
• Ernst Hettwig, Walter Mai: Self-dialing long-distance traffic in railway telephone systems. Second expanded edition, Springer Verlag, Berlin 1944.

Web links

• Group call and collective call (accessed July 3, 2017)
• Digital radio (accessed on July 3, 2017)
• Procedure for a confirmed group call in a regionally structured GSM cellular network (accessed on July 3, 2017)