Introduction to the SINAUT ST7 system
2.4 The SINAUT ST7 modems
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
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2.4.1
The modem variants
The following modem variants are available:
MD2
Dedicated line modem
for multipoint connection, can be tapped,
can also be used as a repeater,
max 19,200 bps
MD3
Modem for the analog telephone network,
max. 33600 bps,
can also be used as dedicated line modem for a point-to-point link,
max. 33600 bps in voice band
MD4
Modem for the digital ISDN network,
max. 64,000 bps
These modems can be attached to the serial modem port of a suitably equipped TIM module
(TIM 3V-IE and all TIM 4 variants).
Due to the design, the modems can be installed on an S7-300 standard rail just like the TIM
modules. As an alternative, the modems can also be installed on a 35 mm standard
mounting rail. In this case, an adapter is required that can be ordered separately.
The following figure shows the modem modules with further details (schematic
representation with the covers removed).
Figure 2-12 Connectors of a SINAUT ST7 modem