Operating Manual

March 2008 5100 ES Models II/III Portable Radio Operating Manual 5-15
Conventional Mode Features
MDC1200 ANI - Both pre and post ANI are supported.
MDC1200 Decode - MDC1200 decode functionality is supported so that the radio can
handle the following MDC1200 features:
• Process the system acknowledgement of emergency transmissions – so that the user
knows that the emergency has been received
• PTT ID Decode - Display the ID / Alias of a calling radio on all other radios
• Selective Radio Inhibit – Allow the dispatcher to inhibit a radio
• Call Alert – Alert the user to call the dispatcher
• Radio Check – Verify that the unit is within the operating area
MDC1200 Emergency Alarm - The radio continues trying its emergency transmission
until the emergency is acknowledged by the system. The radio will retry for the
programmed number of retries.
5.12.4 Five-Tone Signaling
A single transmission consists of five separate tones transmitted sequentially with an
optional inter-tone pause between tones. If Five-Tone is selected as the RTT type, then
Five-tone shall also be used as the signaling type for conventional analog emergencies.
The first four tones are used for unit identification and the fifth tone is used for status.
No two adjacent tones shall be the same frequency. When two identical digits follow each
other, the second shall be transmitted as the “Repeat” tone.
Five Tone signaling can also be used for Pre Post ANI and Emergency Alarm Signaling.
Fifth Tone Status values are:
Tone 1 – Normal Call
Tone 9 – Emergency Call
Tone 2 – Normal Secure Call
Tone 8 – Emergency Secure Call