MTT-48/12 telegraph tone modem

MTT is designed for use as a channel-forming equipment.
MTT compacts up to 12 telegraph channels in the channels of IF (0,3 -3,4 kHz) or channel intervals of digital stream E1 (G.703).
When connecting a digital stream, counter and transit switching is provided.
Setting of MTT operation parameters is performed by software and stored in the non-volatile memory of the device.
During the setting it is set:
- the number of used THF channels or channel intervals of the E1 digital stream (up to two);
- numbers of the involved channel intervals of the E1 digital stream;
- the number of telegraph channels in each PM channel or channel interval of the E1 digital stream (from 1 to 24);
- information transmission speed.
After entering the operation parameters, MTT provides autonomous operation mode (without PC).