SemTETRA The voice gateway supports connection to specific terminals or group call. All group communication can be monitored via the phone. PTT activation can be made by a combination of key pressure and VOX (Voice Operated Transmit). SemTETRA data services The SemTETRA network provides a short data service allowing short messages to be sent in between the mobile data. Packet data gateway The SemTETRA system fully supports multi-slot PD giving approximate throughputs from 3.5 to 14 Kbit/sec. depending on the number of slots used. Network management application The Network Management programme provided with SemTETRA is a standard Windows application, which can be started on any Windows computer with connection to the SemTETRA backbone network. Voice logging For individual calls, if the calling or the called party or both are on the positive list, the call is voice logged otherwise not. The group call is only voice-logged if the called group, TSI, appears on the positive list. Priority If all voice time slots are occupied, calls are prioritised. Lower priority calls are stopped in order to allow communication of higher priority. Pre-emptive priority of normal and/or emergency calls is also possible. Application gateway The application gateway enables integration of almost all other voice systems, that is, traditional UHF radio, VHF/FM/AM, PA/GA, and a number of other systems and applications. SemTETRA dispatcher functions The SemTETRA also uses the application gateway. From the dispatcher it is possible to see the • • • • Phone book Active calls view SDS view Event log If enabled it is possible to edit the subscriber register directly from the dispatcher. Semco Maritime is an international company with branches all over the world. For further information, addresses, email addresses, fax and phone numbers, please see our website: SEMCO MARITIME A/S reserves the right to make changes without prior notice. © 2015, SEMCO MARITIME A/S and the SEMCO MARITIME Group of Companies. www.semcomaritime.com 02/2015
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