Installing and Administering PPP

160 Appendix A

Modem Connections

Dial Up Modems

Outbound devices begin with the string "cu" and inbound devices

begin with the string "tty."

3. Type the following, substituting device names you wrote down in step

2 for the italicized device names in this example:

ls -l /dev/cul0p1 /dev/ttyd0p1

Output similar to the following appears.

crw-rw-rw- 1 bin bin 1 0x000001 Jul 8 13:51 cul0p1

crw-rw-rw- 1 bin bin 1 0x000002 Jul 8 13:51 ttyd0p1

The output contains important device conﬁguration information.

crw--w---- 1 bin bin 1 0x000002 Jul 8 13:51 ttyd0p1

^ ^^

| ||

major |+indicates inbound or outbound

number | device

| 1 = outbound, 2 = inbound

+-indicates status of hardware

flow control

0 = off, 1 = on

4. Type the entry below, inserting the major number as shown. In this

example, the major number is 1.

lsdev 1

Output similar to the following appears.

Character Block Driver Class

1 -1 asio0 tty

5. Proceed to “Setting Hardware Flow Control” if the name “tty” appears

under the heading, “Class”.

NOTE Do not proceed if the name under the heading “Class” is "pseudo". If

“pseudo” appears, the tty driver is assigned a (potentially) new major

number each time the system is rebooted. The next section only applies if

your system's major numbers are static, which is usually the case. If your

system does not have static major numbers, you will need to contact HP

technical support for further instructions on how to set up hardware ﬂow

control for your tty devices.