Transcript TETRA TERMINAL MAY CALL A GROUP RELATED TO THE

TETRA Gateway
• Allows Tetra to interface with Legacy Systems such as
EDACS, SmartNet, P25 and MPT
• Interface to Marine Radio
• Interface to Air Band Analogue Radio
• Dispatcher Monitoring of Analogue channels
Interface Tx,Rx, PTT & Squelch Detect
4 x Tx, Rx, CDT, PTT
Analogue Channel 1
Analogue Channel 2
IP
Analogue Channel 3
Analogue Channel 4
TETRA-GATEWAY
TETRA
NETWORK
Analogue Gateway: 2 ways to use
IP
VHF Marine Band
Frequency 152,7 MHz
TETRA
NETWORK
TETRA-ANALOGUE
GATEWAY
Method 1; TETRA TERMINAL MAY CALL A GROUP RELATED TO THE
ANALOGUE FREQUENCY. THE TETRA TERMINAL IS USED AS A VHF
TERMINAL ON THE ANALOG FREQUENCY
AS OPEN CHANNEL
Manual Select
group 152,7
MHz
TETRA PTT depress
Analogue PTT depress
Method 2: TETRA TERMINAL or DISPATCH STATION ARE PROGRAMMED
WITH GROUP SCANNING: ANY VHF ACTIVITY? THEY ARE
AUTOMATICALLY CALLED NAD MAY ANSWER
AS OPEN CHANNEL
Analogue PTT depress
group 152,7 MHz
programmed as
a scanned one
TETRA PTT depress
RING