AD278A/AD279A PCI MUX Support Guide, June 2006

Troubleshooting

Connecting a Modem

Chapter 2

6. To view the major and minor number assigned for a device file, run the following command at the HP-UX

prompt:

$ ll /dev/tty4a8

The following output is displayed:

crw--w--w- 1 bin bin 104 0x040700 Apr 5 03:22 /dev/tty4a8

Troubleshooting Modem

Table 2-5 lists the common modem error messages, their causes, and describes how to troubleshoot modem

connections.

Table 2-5 Modem Error Messages

Error Messages Causes Actions

NO DEVICES AVAILABLE The /usr/lib/uucp/devices

file is not setup correctly.

Edit /usr/lib/uucp/devices

to include an entry for the

/dev/culnpp file created earlier.

For example, add the following

entries in the /dev/culnpp:

ACU cul2p5 - 2400 hayes

Direct cul2p5 - 2400 direct

DEVICE LOCKED A lock file exists in the

/usr/spool/uucp directory.

If the modem is not in use, remove

the lock file and try again.

CAN’T ACCESS DEVICE The dial-out port cannot be

opened.

Check the /dev directory for the

port’s existence, ownership, and

permissions.