User's Manual

55
Isolated Site Operation (ISO)
Isolated Site Operation (ISO)
ISO allows communication on the last selected
Hub to continue within a single cell site when
connectivity to the network is lost by allowing the
cell to operate in a local, one cell only mode. The
phone can place talkgroup calls - on the last
selected Hub - until the ISO condition is cleared.
Entering ISO
The phone will enter the ISO state when its cell
becomes isolated from the network, assuming the
phone has no available neighbor cells.
Placing an Emergency Group Call in
ISO
You cannot initiate an Emergency Group call while
in ISO, regardless of whether or not it was the last
Hub in use.
If the phone goes into ISO during an Emergency
Group Call, the call will be terminated.
Using One-Touch PTT in ISO
In ISO, the phone allows dispatch calls on the last
active Hub. One-Touch PTT setting will be
overridden in the following cases:
1 If One-Touch PTT setting was set to off before
the phone went into ISO.
2 If the One-Touch PTT setting had a Group ID
assigned to it and if it was not the last active
group, when the phone went into ISO.
3 If the One-Touch PTT setting had a custom
private ID (UFMI) assigned to it.
Exiting ISO
When the phone exits ISO and goes back on the
network, the phone will emit the network service
available tone.The display will return to the idle
screen.
Status Messages
You can send a canned message to a selected
phone. Status Messages are stored in your SIM
card. Status Messages let you send a
pre-programmed message to another phone. Up to
ten pre-programmed alphanumeric Status
Messages are available.
Entering the Status Message
Select an entry from one of the following:
• Idle Screen
• Contacts
• Recent Calls
• Call Alert Queue