OTE VS 2001 - Services

VS 2001
Technical Handbook
General Information
Page 12 Marconi Proprietary information
P/N: 779-0373/02
Revision 02
1.6 SERVICES
Operations whereby the equipment exchanges information with the Operating
Centre and/or with any other equipment registered under the system are
essentially the following:
• Transmission and reception of both full duplex and half duplex voice
communications;
• Transmission and reception of status messages;
• Transmission and reception of short data messages (SDS).
In particular, the equipment can carry out:
• Individual calls with the following types of signals:
- On/off hook: with acceptance accomplished by the radio terminal’s
operator,
- Direct set-up: with automatic acceptance.
• Individual half and full duplex voice calls between equipment-equipment,
equipment-dispatcher, equipment-gateway;
• Individual circuit Data Calls (single slots): 2.4 / 4.8 / 7.2 kbit/s half duplex;
• Circuit data transmission (multiple slot): up to 28.8 kbit/sec;
• Group voice calls;
• Joining a group call function;
• Short Data Service (SDS);
• Concurrent voice/data services;
• Priority calls;
• Priority calls with freeing up of resources;
• Late Entry: delayed entry of the radio terminal within an already active group;
• Calls authorised by the Dispatcher;
• Registration/de-registration.