Siemens SINAUT ST7 System Manual page 204

Installing and putting a SINAUT modem into operation
5.5 MD2 dedicated line modem
Setting on DIL switch
*) For detailed explanations of the squelch function and "Reset Test receive", refer to Chapter 4 of the MD2 Modem Description 6NH7811-
0AA21 that can be ordered separately.
204
Meaning
Squelch OFF *)
This is a mandatory setting for the MD2 in conjunction with a TIM.
Squelch ON *)
This setting is not permitted for the MD2 in conjunction with a TIM.
Reset "Test receive" off / normal transmit level *)
Depending on the selected mode, this switch has two meanings:
In the "Test receive" mode, this switch setting has no function.
In all other modes, the transmit level for operation of the modem on
normal dedicated lines is set depending on switch S1 (5-pin DIL
switch) to 0 dB (S1 = ON) or –6 dB (S1 = OFF).
Reset "Test receive" on / reduced transmit level *)
Depending on the selected mode, this switch has two meanings:
In the "Test receive" mode, the test operation can be reset.
In all other modes, the transmit level for operation of the modem on
telephone company leased lines is reduced. Depending on switch S1
(5-pin DIL switch), the transmitter level is then set to
–9 dB (S1 = ON) or to –15 dB (S1 = OFF).
System Manual, 07/2009, C79000-G8976-C178-07
Station control system