Swmi Initiated Group Attach/Detach; Private Call; Simplex Private Call; Duplex Private Call - Motorola MTP830 S Product Information Manual

If the radio is provisioned with this option, when you turn scanning off, the radio sends an appropriate TETRA
signaling. In this state, the radio does not monitor any groups other than the selected group. If you then turn scanning
on, the radio sends an appropriate TETRA signaling and begins monitoring all scanned groups again.
If the radio is not provisioned with this option, you only have an option to deselect the active scan list. However, you
cannot turn off the scanning. Deselection of the user scan list causes a group detachment of the scan list groups sent to
the SwMI. However, the radio continues to scan all other groups (such as ATG associations).

SwMI Initiated Group Attach/Detach

The Switching and Management Infrastructure (SwMI) can send a talkgroup attachment to the radio. The radio will
attach to it, even if this talkgroup had not been programmed in the codeplug.
If the radio receives a SwMI initiated attachment for the group already currently selected, the radio accepts the
attachment, and keeps the group selected.
If the radio receives a SwMI initiated attachment for a group in the currently active scan list, the attachment is
accepted. If it is for a group that is not in the current active scan list, the attachment is rejected.
If the detachment is for the selected group, the display indicates that no group is currently selected. If the detachment
is for a group that is in the scan list, the group remains in the list. However, it is not monitored. If the detachment is
for a group that is in the SwMI controlled list, it is removed from that list.

Private Call

The Private Call, also called point-to-point, or individual call, enables calling between two individuals. No other radio
can hear the conversation. This call type can be carried out in two ways:
• Duplex call (if the system allows), in TMO Mode. Both parties can speak at the same time.
• Simplex call, in TMO or DMO Mode. Only one party can speak at a time.
From your radio, a Private Call can be started using one of the following methods:
• Dialing ISSI number on the idle screen
• By selecting contact from the address book
• By selecting ISSI number from the recent call list
• Using Remote Control feature
• By pressing predefined One Touch Button
• Other
When a DMO Private Call takes place, radios not involved in this call receive the channel busy indication. The radios
are identified using their radio numbers.

Simplex Private Call

The radio is able to make and receive private calls to and from other TETRA radios with simplex speech capability.
This call type uses TETRA individual call signaling.
All private calls are initiated using the on-off hook method. For incoming calls, the radio accepts both direct and on-
off hook setup.

Duplex Private Call

The radio allows making and receiving private calls to and from other TETRA radios with duplex speech capability.
Depending on the configuration, the radio may prohibit you from initiating duplex private calls.
The radio always initiates duplex private calls using on-off hook signaling with the traffic channel allocated by the
SwMI only after the called party has answered the call. Therefore, the radio generates all progress tones during the
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