12
Powering On (Emergency Button)
Press and hold the Emergency button to power On. 
The MTH800 will power On in Emergency Operation or in standard 
mode (as programmed).
Powering On with Transmit Inhibit (TXI) Active
Transmit Inhibit is a feature allowing you to switch off transmission 
before entering a Radio-Frequency (RF) sensitive area. To activate 
this feature, press and select More...> Networks > TXI Mode 
> Activate.
The TXI Mode remains active at power On. You will be asked 
whether to leave the TXI Mode On or not. 
Press the Yes key to deactivate the TXI Mode. If the MTH800 was 
previously used in Trunked Mode, it will register to the network. If 
the MTH800 was previously used in Direct Mode, it will remain in 
Direct Mode.
Press No in Trunked Mode and the MTH800 powers down; press 
No in DMO and you remain in DMO with TXI selected.
Unlocking the MTH800
Your MTH800 may be locked at power up. 
To unlock the MTH800 after powering on, enter the code at the 
prompt. The MTH800 enters the default Home display.
The unlock code is originally set to 0000. Your Service Provider may 
change this number before you receive your terminal.
Pressing the Emergency button, even if Transmit Inhibit is activated, causes 
the MTH800 to transmit immediately. The MTH800 must NOT be within the 
RF sensitive area when entering Emergency Operation.
 Ensure you have left the RF sensitive area before deactivating Transmit 
Inhibit.
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6802972C35.book  Page 12  Monday, August 16, 2004  9:22 PM