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Sepura SC21 Series User Manual

Sepura SC21 Series
133 pages
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Icon Description
Either the Callout originator or the receiving
radio has End-to-End Encryption switched off.
The Callout is addressed to an individual.
The Callout is addressed to a group.
Left and Right navigation keys
The left and right arrow icons are displayed between the Context keys during Protected Callout
Mode when there are more options than are shown on the Context keys.
EITHER:
Press the Left or Right navigational keys to display a menu of the additional options available
OR
press the Select/Send key to action the first item in the menu of options. The Select/Send
Key Shortcut icon is displayed between the context keys to indicate that this shortcut is
available.
Group calls to Callout group
While your radio is in Protected Callout Mode the only calls you can make are TETRA Alarm Calls,
Quick Calls (if customised as a higher priority than Callout), and, if allowed, group calls to the Callout
group. You can only make group calls if PTT use is permitted during the Callout.
For some Callouts your radio can make and/or receive group calls to a specially configured Callout
group when it is in Protected Callout Mode. This group may be the group the radio is attached to
when the Callout is received, or a different group which the radio is configured to connect to on
receipt of the Callout or when an acceptance message is sent.
While the PTT is pressed and the radio is transmitting the text Talk is displayed in place of
“CALLOUT” on the Radio Status Line at the top left of the screen and no backdrop is displayed.
When the radio is receiving a group call the ISSI (or shortened ISSI) or identity of the transmitting
party is displayed in place of “CALLOUT” on the Radio Status Line at the top left of the screen.
When the Callout has exited, depending on the customisation, the radio either reattaches to the
group it was attached to before receiving the Callout, or remains attached to the new group.
Information Phase
Some Callouts do not exit after the initial acknowledgement is sent, but enter an Information Phase
when information may be sent to and received from the originator of the Callout.
Information can include a pre-set message, a free-form text message or a Callout group call. Your
radio can also be customised to display a backdrop graphic to indicate it is in Information Phase.
User Guide 91

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Sepura SC21 Series Specifications

General IconGeneral
IP RatingIP54
Operating Temperature-20°C to +55°C
Channel Spacing25 kHz
Ingress ProtectionIP54
ChannelsUp to 2000
Frequency Bands380-430 MHz, 806-870 MHz
Battery LifeUp to 14 hours
RF Power Output1W
TETRA Air InterfaceETSI EN 300 392-2

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