Call Signal Connections For Other 4-Wire Communications Systems; 4-Wire Call Send And Call Enable/Inhibit - RTS DSI 2008 User Instructions

GPI OUTPUT NUMBERS
UIO-256 UIO-256
FRAME #1 FRAME #2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
a. Dependent on UIO-256 DIP Switch SW1 Settings for Input/Output Range as summarized in the UIO-256 manual.

Call Signal Connections for other 4-wire Communications Systems

4-wire Call Send and Call Enable/Inhibit

The DSI 2008 accepts a switch-contact input from the 4-wire system and then generates a call signal output to the 2-wire
system. The DSI 2008 also accepts an optional switch contact input to enable or inhibit call signaling between the 4-wire and
2-wire systems. Figure 6 shows the typical connections.
Typical call send and call enable/inhibit connections for a 4-wire intercom system.
FIGURE 6.
a
UIO-256
FRAME #3
17 33
18 34
19 35
20 36
21 37
22 38
23 39
24 40
25 41
26 42
27 43
28 44
29 45
30 46
31 47
32 48
RELAY CONTACT PIN NUMBERS
NORMAL
UIO-256 CLOSED
FRAME #4 (NC)
CONTACT
49 38
50 39
51 41
52 42
53 44
51 45
55 41
56 48
57 26
58 27
59 29
60 30
61 32
62 33
63 35
64 36
NORMAL
COMMON
OPEN (NO)
CONTACT
CONTACT
13 40
14 15
16 43
17 18
19 46
20 21
22 49
23 24
1 28
2 3
4 31
5 6
7 34
8 9
10 37
11 12
13