Network Configurations
© Siemens AG 2002 All Rights Reserved 6NH7811-0AA22
MD2 Modem (07/2002) 5-7
5.1.3 Multidrop Line, 4-wire Full-duplex
Overview
Fig. 5-3 shows a configuration for a multidrop line, 4-wire full-duplex. The MD2
modems on the outer left and right represent 4-wire terminal points, the MD2
modem in the middle is a 4-wire tapping point. All three modems are set to the
"Normal" operating mode.
All available baud rates and character recognition methods can be used in this
configuration.
The DIL switch settings on the MD2 modem and the switch settings on the LTOP2
are the same at both terminal points (see Table 5-4). The tapping point requires
other switch settings on the MD2 and LTOP2 (see Table 5-5).
Fig. 5-3 Network configuration: multidrop line, 4-wire full-duplex
Fig. 5-3 illustrates only one tapping point. Each additional tapping point is identical
to this and the settings on the MD2 and both LTOPs are the same.
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