SOPRAN-W is a telephone set that may operate with telephone exchanges of any type and is intended for use in military posts. It provides the following functions:

-tangent switch in microtelephone to lock the microphone,
-automatic switchover between the pulse and dual-tone multi-frequency dialling mode,
-possibility of saving up to 10 numbers to direct-or indirect-access memory;
-redialling of the last used number;
-call-back function;
-possibility to change the voice volume on the microtelephone receiver;
-control of call signal volume and sound tone;
-optical call signalisation;
-MUTE / melody function. Electronic telephone set SOPRAN-W

Download PDF