### SCO UnixWare Port Names for EPC/X, C/X, and Xem Systems

Format used for port names:

/dev/term/cpt, /dev/pr cpt

/dev/term | Directory path for tty devices
pr | Base name for DigiPRINT ports
c | Concentrator/EBI Module ID (a-z). ID letters may be used more than once
p | Port number on the specified concentrator or EBI module (01-64). Systems with a large number of ports may have to use some Concentrator/EBI module ID letters more than once; when this occurs, ports on the first concentrator or module to use an ID letter will be numbered 01-16, ports on the second will be numbered 17-32, etc.
t | Type of port (s or m). Denotes the port as a "standard" (s) or "modem control" (m) port. Standard (non modem control) ports do not require DCD to be asserted before they can transmit data. Modem ports require DCD to be asserted before they can transmit data, and software flow control is enabled by default.

#### Examples:

Port 4 on Concentrator or EBI module "b" is /dev/term/b04s. The same port with modem control is /dev/term/b04m. The associated DigiPRINT devices are /dev/prb04s and /dev/prb04m.

If there are 28 concentrators/EBI modules, the 28th will also be assigned the ID letter "B"; Port 4 on Concentrator 28 will have the names /dev/term/b20s, /dev/term/b20m, /dev/prb20s and /dev/prb20m.

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