Comtrol VS1100 Installation Reference Card - Manual (Page 7)

Connecting Devices
Use the following discussion to connect RS-232
asynchronous devices to the VS1000/VS1100 ports. The
following figure illustrates a modem bank environment.
1.
Connect your RS-232 devices to Ports 1 through 16,
for each VS1000/VS1100. RJ45 to DB25 cables are
available from Comtrol.
VS1000
COM5-
COM20
VS1100
COM21-
COM36
VS1100
COM37-
COM52
VS1100
COM53-
COM68
Modem Bank
Modem Bank
Modem Bank
Modem Bank