Modem error

I’ve configured a Digi Neo 4p card with 4 USRobotics 56Kbps V92 modems, but the logs shows these errors:


10/13 05:24:18 n1a mgetty: experimental test release 1.1.30-Dec16
10/13 05:24:18 n1a check for lockfiles
10/13 05:24:18 n1a checklock: no active process has lock, will remove
10/13 05:24:18 n1a locking the line
10/13 05:24:18 n1a makelock(ttyn1a) called
10/13 05:24:18 n1a do_makelock: lock=‘/var/lock/LCK…ttyn1a’
10/13 05:24:18 n1a lock made
10/13 05:24:18 n1a tio_get_rs232_lines: status: RTS CTS DSR DTR
10/13 05:24:18 n1a tss: set speed to 38400 (017)
10/13 05:24:18 n1a tio_set_flow_control( HARD )
10/13 05:24:18 n1a waiting for line to clear (VTIME), read:
10/13 05:24:18 n1a waiting for line to clear (VTIME), read:
10/13 05:24:19 n1a removing lock file
10/13 05:24:19 n1a waiting…
10/13 05:24:23 n1a select returned 1
10/13 05:24:23 n1a checking lockfiles, locking the line
10/13 05:24:23 n1a makelock(ttyn1a) called
10/13 05:24:23 n1a do_makelock: lock=‘/var/lock/LCK…ttyn1a’
10/13 05:24:23 n1a lock made
10/13 05:24:23 n1a waiting for line to clear (VTIME), read: [0d][0a]RING[0d][0a]
10/13 05:24:23 n1a looking for utmp entry… (my PID: 3090)
10/13 05:24:23 n1a utmp + wtmp entry made
10/13 05:24:23 n1a tio_set_flow_control( HARD )
10/13 05:24:23 n1a print welcome banner (/etc/issue)
10/13 05:24:23 n1a getlogname (AUTO_PPP), read:[0d]
10/13 05:24:23 n1a input finished with ‘\r’, setting ICRNL ONLCR
10/13 05:24:23 n1a tio_set_flow_control( HARD )
10/13 05:24:23 n1a print welcome banner (/etc/issue)
10/13 05:24:23 n1a getlogname (AUTO_PPP), read:[0a]
10/13 05:24:23 n1a tio_set_flow_control( HARD )
10/13 05:24:23 n1a print welcome banner (/etc/issue)
10/13 05:24:23 n1a getlogname (AUTO_PPP), read:ERROR[0d]
10/13 05:24:23 ##### failed dev=ttyn1a, pid=3090, got modem error ‘ERROR’

Can anyone help me??

Thanks.

It’s difficult to say what the problem can be without seeing more details of the PPP configuration.

However, if you use an 8 wire cable to connect your modem, you will want to activate the altpin setting to ensure DCD is being asserted:

ditty.dgnc altpin ttyn1a

Meanwhile, here are some details on configuring USR modems:

http://search2.digi.com/support/kbaseresultdetl.jsp?id=335

Here is my /etc/ppp/options:

more options.server

debug
kdebug 4
lock
modem
ipcp-accept-local
crtscts
38400
asyncmap 0
nodetach
refuse-chap
require-pap

Hope this helps.

Can you please monitor the serial port signals using dpa.dgdm to see if the signals change when the error occurs?

Also, has this modem been tried on the built-in serial port?