Comtech EF Data CRS-300 - Manual (Page 179)

CRS-300 1:10 Redundancy Switch MN/CRS300.IOM
Modem, RMI/TMI, and Switch Configuration Revision 19
5–15
5.4.2 EIA-232/-422, V.35 Interfaces via the CRS-320 and CRS-340 TMIs
Jumpers “JP1” and “JP2” on the CRS-320 (obsolete) and CRS-340 TMI cards set the functionality
of the control signals DTR/DSR and RTS/CTS. See Figure 5-6 and Figure 5-7 – Comtech EF Data
ships these TMIs pre-set with jumpers “JP1” and “JP2” open.
Figure 5-6. CRS-320 EIA-232/EIA-422 TMI Card (Jumpers Shown Open)
Figure 5-7. CRS-340 EIA-232/-422/G.703 TMI Card (Jumpers Shown Open)