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RCS20 M:N Redundancy Switch
Electrical Interfaces
Pin No.
19
20
IBS ES Transmit Data A IDR ESC Backward Alarm
21
22
23
IBS ES Data Set Ready (RS-232 Only)
24
IDR ESC Transmit 8 Kbps Output Clock
25
IDR ESC Transmit 8 Kbps Output Data
26
IDR ESC Receive 8 Kbps Output Clock
27
IDR ESC Receive 8 Kbps Output Data
28
IDR ESC Backward Alarm Output 4
29
30
31
Synchronous Data Clear to
32
33
Synchronous Data Request to Send A
34
Synchronous Data Receiver Ready A
35
36
Synchronous Data Send Data Input B
37
IDR ESC Backward Alarm Out 1 Normally Closed
38
39
G.703 Drop Data Out B Synchronous Data Send Timing Output B
40
IDR ESC Backward Alarm Out 2 Common
41
Synchronous Data Terminal Timing B
42
IDR ESC Backward Alarm Output 2
43
Synchronous Data Receive Timing B
44
IDR ESC Backward Alarm Out 3 Normally Closed
45
G.703 Insert Data Out Synchronous Data
46
IDR ESC Backward Alarm Out 4 Common
47
48
49
50
51
52
53
54
IBS ES Transmit Data B
55
Demod Fault Open Collector Output
56
57
58
IDR ESC Transmit 8 Kbps Output Clock B
Signal Name
IDR ESC Backward Alarm Input - 3
Mod Fault Open Collector Output
IBS ES Receive Data Output A
IBS Transmit Octet Input A
Synchronous Data Mode A
IBS Receive Octet Output A
G.703 Send Data Input B
G.703 Insert Data Input B
External Clock Input B
Ground
IDR ESC Audio Input Channel 1B
IDR ESC Audio Input Channel 2B
IDR ESC Audio Output Channel 1B
IDR ESC Audio Output Channel 2B
IDR ESC Backward Alarm Input 4
IDR ESC Backward Alarm Input 2
IBS ES Receive Data Input B
Ground
Input 1
Normally Closed
Send A
G.703B DDO-B SYNC ST-B
Normally Open
5–21
MN-RCS20 and CD-RCS20
Signal
Direction
ESCBWI 3
---
TXD-A BWI 1
Input
MOD FLT
Output
ES RXD-A
Output
ES DSR
Output
ESCTXC-A
Output
ESCTXD-A
Input
ESCRXC-A
Output
ESCRXD-A
Output
ESCBWO 4NC
---
TXO-A
Input
SYNC DM-A
Output
SYNC CS-A
Output
RXO-A
Output
SYNC RS-A
Input
SYNC RR-A
Output
G703B SD-B
Input
SYNC SD-B
Input
ESCBWO 1 NC
---
G703B IDI-B
Input
Output
ESCBWO 2C
---
SYNC TT-B
Input
ESCBWO 2NO
---
SYNC RT-B
Output
ESCBWO 3NC
---
IDO-B RD-B
Output
ESCBWO 4C
---
BAL EXC-B
Input
GND
---
ESCAUDTX 1B
Input
ESCAUDTX 2B
Input
ESCAUDRX 1B
Output
ESCAUDRX 2B
Output
ESCBWI 4
---
TX-B BWI 2
Input
DMD FLT
Output
ES RXD-B
Output
GND
---
ESCTXC-B
Output
Revision 15
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