topic Re: modem hangs in Operating System - HP-UX

modem hangs

Bill Pontius — Tue, 28 Nov 2000 16:56:06 GMT

We have a G40 with 10.20 with an external modem that has been working for years. Now the modem hangs. The two modems will connect and show connected to the Unix but the unix doesnt responsed and just sets there. We have replaced modems many times, replaced cable and io board.We have checked calling modem for even 7 and 1. We have gone thru the check list on correct cable pinouts, configuring HP-UX for a modem, and requirements for modems to work on HP-UX.

Re: modem hangs

Thomas J. Harrold — Tue, 28 Nov 2000 17:20:40 GMT

Hi.

Are you expecting the system to respond with a login prompt? If so, check that getty is still running. Getty is usually configured to start in /etc/inittab. It should re-run itself whenever it dies, but perhaps the process is hung.

-tjh

Re: modem hangs

Bill Pontius — Tue, 28 Nov 2000 20:10:59 GMT

I was able to get HP software support to followup. Used SAM to remove and add modem and then Kermit to set setting for modem. Also cleanedup .login setting. All is well now. Thx

Re: modem hangs

John McWilliams — Tue, 28 Nov 2000 20:42:01 GMT

Where have you got the modem connected to. If it is an emux card ( I have D230 with this) there is a utility called emux_diag. This acts like a datascope and will show traffic in and out as well as signaling eg dtr, dsr, rts, etc.

Also as suggested below check the getty but also check that the getty starts with the current run level of the machine.

type who -r
We have the entry
a1:4:respawn:/usr/sbin/getty -h ttyd2a2 19200m

the 4 is the run level when this process will start.

Regards John