20.5.99 | kap13.fm5 | Profiset 70isdn, GB: |
ISDN glossary
S0 bus A line used from the network termination in the
Service indicator A feature of ISDN. The service indicator, which is sent with every ISDN connection, indicates the type of connection required. If the service indicator of the calling terminal does not correspond to that of the called terminal, the connection is not established.
Standard rate access Service package for ISDN features. See also premium rate access.
System connection A particular type of ISDN connection. In the Euro ISDN, either the ba- sic rate access or the primary rate access can be used for a system connection. The system connection is a
Terminal adapter A device for interface adaptation, e.g. for connecting analog terminals to an ISDN basic rate access.
Toggle A special type of consultation whereby the two parties can be spoken to alternately without interrupting the telephone connection.
TSI Abbreviation for "Terminal Selection Identifier". Used for the old Ger- man ISDN protocol 1TR6 (no longer widely used) to address a number of terminals connected to the same basic rate access. Nowadays, MSNs are used for this function.
Western plug General term for connectors with 4 or 6 contacts with analog termi- nals and 8 contacts with ISDN terminals.
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