Optus S2 User Manual page 85

FCN 84 & 85: CLOSED USER GROUP
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(CUG) OPERATION
"Queued" The user is queued for talk permission. The
display will remain as "Queued" before
changing to "Next", and then finally to "Talk"
as the queue shuffles up.
The user will hear a beep in the handset to indicate that they
have Talk permission.
NOTE: While in Talk mode on a Broadcast CUG channel, ensure that the user
holds down the MUTE button to prevent echo being broadcast back into the
handset.
Hold the Mute key down to prevent echo. Releasing the MUTE
button while in Talk mode, will send a request to end the talk
session (ie: Listen Request) and the phone will return to
Listen mode.
On a Duplex CUG Channel the Optus MobileSat S2 user
should not hold down the MUTE button as the conversation to
the CUG Operator will be full duplex.
Detach from CUG
A user can detach from the CUG while in Listen mode by
pressing the END key for >2 seconds. This will return the
phone to Standby mode where normal PSTN calls can be
made.
If a user is in Listen mode and holds down the PWR key for >
2 seconds, then the transceiver will detach from the CUG and
then power down.
When the unit next powers up, it will go to Standby mode and
then wait 15 seconds before attempting to automatically
attach to the CUG. If the user presses any handset button in
the period before the transceiver attempts to attach to the
CUG, then the auto-attach will be aborted. The user must use
FCN84 to attach to the CUG in this case.
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FCN 84 & 85: CLOSED USER GROUP
6
(CUG) OPERATION
Handset Messages
Calling Appears when the user attempts to
attach to the CUG.
Awaiting Connection Follows "Calling" when attaching to a
CUG to indicate that the S2 has tuned
to the CUG channel and is waiting for
connection.
Listen S2 is attached to the CUG and is able
to listen to others talking on the CUG
channel.
Talk Request Indicates that the S2 is sending a
request to the CUG operator for
permission to be the S2 that is
talking.
Talk Indicates that the user has
permission to talk on the CUG
channel. Other CUG members will
hear what is said on this phone.
Next Indicates that the Talk Request was
received by the CUG Operator, and
that the S2 will be the next S2 to be
granted talk permission.
Queued Indicates that the Talk Request was
received by the CUG Operator, and
that the S2 is in the queue to be
granted Talk permission (maybe
queue position 2 – 10).
CUG Link Timeout Indicates the S2 has lost the CUG
channel for a period of time and has
automatically detached from the
CUG. (maybe due to shading or the
CUG channel has stopped
transmitting.)
Listen Request Indicates that the S2 has requested to
relinquish the Talk state and is
changing to Listen state.
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