Comtech EF Data SMS-758 - Manual (Page 104)

Theory of Operation SMS-758 Modem Protection Switch
4–44 MN/SMS758 Rev. 3
1
JP2
BACKUP
INTERFACE
SWITCH
AS/1694
15
16
.
JP1
1
2
. . .
. . . . . . . .
. . . . . . . .
Figure 4-17. Backup IBS Jumper Diagram
Table 4-8. Backup IBS Jumpers
Operation Jumper Pins Comments
Normal JP1 5 through 6
7 through 8
13 through 14
15 through 16 Independent RST
and CTS
Special JP1 1 through 2
3 through 4
9 through 10
11 through 12 CTS, tied to RTS,
TXD of ESC on
CTS lines
G.703 JP2 1 through 2
3 through 4
RS-422, V.35 JP2 No connections
No connections