User's Manual

User Guide
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en
8.4 Network selection
After turning the power on, the Terminal always tries to register into the programmed home
network. From the menu Settings\Network selection\, you can select manually a new
network from a list of enabled networks.
8.5 Supplementary services
The following TETRA supplementary services are also available for your terminal HTT-500:
- Late Entry:
This supplementary service allows the terminal to enter in an ongoing group call.
- Ambience Listening:
This service is defined as the facility whereby a control point may place a TETRA MS (or
LS) into a special type of individual voice call teleservice so that the called MS transmits
without any action from, or indication to, the called user. Ambience listening only is set-up
if the called unit is not already engaged in a call.
In the same way, Ambience Listening supplementary service does not prevent the
affected user from making or receiving other calls.
- DGNA:
Dynamic Group Number Assignment.
- Fall-back mode (local mode)
:
HTT-500 supports working in cells in fallback mode (disconnected from the rest of the
system) indicating this situation to the MMI user.