| TDB-E
/ TDB-R
Loop transmitters
These two systems mean we can transfer the loops from a remote place to one or several other places.

Functions
They are composed of, at least, two of the following modules :
An emitting loop transmitter (TDB-E) which :
- Recovers data from 8 or 24 loops
- Filters incoming data
- Carries out the call to the receiver module on PSTN / GSM support or PSTN / satellite support
A receiving loop transmitter (DBB-R) which :
- Detects calls from the emitting module on PSTN, GSM or PSTN / satellite
- Restores incoming loops from the emitter depending on the programmable functions on a maximum of 18 loops
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