Synchronous I/O Card - 3Com AccessBuilder 4000 Installation Manual

C-2 A C: I I/O C
PPENDIX NSTALLING ARDS
Port 4
Port 1
Port 8
Port 1
Figure C-1 Asynchronous I/O Card Major Components and Ports
Synchronous I/O The synchronous card provides a V.35, RS-449, RS-232, or X.21
Card synchronous interface that can be used to interconnect the
AccessBuilder to a synchronous modem for digital lease line
connections.
Figure C-2 shows the major components of the synchronous card and
the external port on the back panel.