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Power Up Only
If the Aegis or ProVoice circuit board is not responding, correctly, one of the following error
messages will be displayed and the radio needs servicing:
HARDWARE
ERR= 3X
3X will be a number between 30 and 38
15.2.4 Aegis Private, ProVoice Private, and Voice Guard
1
Private
Modes
The Aegis and ProVoice private modes allow the radio to transmit encrypted messages and
receive clear or private transmissions. The radio will transmit private if the group/channel is
programmed for private operation and forced operation is pre-programmed.
If the radio was pre-programmed for auto-select, the radio will transmit in the following modes;
• If Private mode is enabled, transmissions are always in private mode.
• If Private mode is disabled and a private call is received, the Reply transmission will be in
Private mode if the transmission is made during the scan hangtime. If the reply transmission
occurs after the scan hangtime, the transmission will be in Clear mode.
Aegis or ProVoice transmissions cannot be received by any radio set to receive a Voice Guard
®
transmission. Accordingly, Voice Guard or ProVoice transmissions cannot be received by a radio
set to receive an Aegis transmission and neither Aegis nor Voice Guard transmissions can be
received by a radio set to receive ProVoice. Since the M7100
IP
radios are not Voice Guard
compatible, the M7100
IP
cannot receive a Voice Guard transmission, nor can Aegis or ProVoice
transmissions from an M7100
IP
radio be heard by a radio set to receive Voice Guard
transmissions.
When operating on a group or channel programmed for private mode, all transmissions will be
private transmissions and the radio will receive clear and private signals. The PVT keylight
(System Model) or OPTION keylight (Scan Model) turns ON when the private mode is enabled.
If the selected group or channel is programmed for auto-select capability, the mode can be toggled
between private and clear with the PVT button (System Model) or
O button (Scan Model). Radios
programmed for forced private operation do not allow a change of the transmit mode; therefore,
the PVT button (System Model) or
O button (Scan Model) has no effect.
15.2.4.1 Displaying the Currently Used Cryptographic Key Number
To display the cryptographic key currently in use for either the system encryption key (for special
call such as individual, phone, all, agency or fleet) or the group/channel key (for group or
conventional calls), perform the following procedure (Not Available on P25 Trunked or
Conventional radios):
1. Press the m button.
2. Use the , or . button (ramp control) to select DISP KEY. Then press the m (select)
button.
3. Then use the , or . buttons to toggle between displaying the system key or the
group/channel key.
1
Voice Guard encryption is not supported by M7100
IP
Series mobile radios.