Comtech EF Data SMS-7000 - Manual (Page 63)

SMS-7000 Modem Protection Switch Installation
Rev. 3 2–29
2.6.2.2 V.35/EIA-232-C Terrestrial Data (J1)
The V.35 terrestrial data connector (one of three IBS data options) is a 25-pin female D,
with one connector per channel (refer to Table 2-10).
C AU TIO N
When using this port, be certain there is no connection to the J6 (EIA-422)
or J3 (G.703) ports. When using EIA-232 data, all data switch modules
must have jumper JP1 in EIA-232 position (with jumpers connecting the
middle pin and the pin furthest from the front of the switch module). For
V.35, all jumpers must be in EIA-422 position.
Table 2-10. V.35/EIA-232 Terrestrial Data Connectors (J1)
Signal Name
Pin # IBS V.35 IDR D&I EIA-232-C
1 SHIELD SHIELD
2 SD A SD
3 RD A RD
4 RTS C C RTS
5 CTS A A CTS
6 DSR B B DM
7 SIG GND L L SIG GND
8 RLSD E E RR
9 SCR B EXT CLK
10
11
SCTE B
12 SCT B R R
13 E E
14 SD B M M
15 SCT A O O ST
16 RD B V V
17 SCR A E E RT
18 D D
19
20
EXC A
21
22
23
EXC B
24 SCTE A (TT)
25 A
Note: For all eight switch modules, JP1 must be either set all EIA-232 or all
EIA-422/V.35/G.703 (JP1 set in the EIA-422/V.35/G.703 position works for most
applications).