Table of Contents
Advertisement
SMS-7000 Modem Protection Switch
2.6.2.1
EIA-422/8 kbit/s Terrestrial Data (J6)
This data port is used for IBS-422 terrestrial data or IDR 8 kbit/s terrestrial overhead
data. The connector is a 37-pin female D, with one connector per channel (Table 2-9).
CAUTIO N
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Rev. 3
When using this port for IBS or no overhead data, be certain there is no
connection to the J1 (V.35) or J3 (G.703) ports. When using EIA-422 data,
all data switch modules must have jumper JP1 in EIA-422 position (with
jumpers connecting the middle pin and the pin closest to the front of the
switch module).
Table 2-9. EIA-422 Terrestrial Data Connectors (J6)
IBS
SHIELD
RS422 TXO-A
SD A
ST A
RD A
RTS A
RT A
CTS A
DM A
RR A
EXC A
RS422 RXO A
TT A
GND
GND
RS422 TXO-B
Signal Name
IDR
SHIELD
8K TXO A
8K TXD A
8K TXC A
8K RXD A
C
RTS A
A
8K RXC A
B
CTS A
L
E
N/C
R
N/C
E
M
8K RXO A
O
N/C
V
N/C
E
D
GND
GND
8K TXO B
Installation
D&I
2–27
Advertisement
Table of Contents
