mgetty - dialin modem 12.04 LTS

[Linda]

Just set up a computer with 12.04 LTS.  I installed mgetty. 
I also installed mgetty doc and feel really stupid because I 
can't find where the documentaion was placed on the machine 
I thought it use to go in /usr/share/doc ? Anyway can 
someone tell me where the documentation is located?
Also maybe someone has a suggestion on what has changed. I 
copied the following file used for 10.04LTS to /etc/init/ttyS1


# ttyS1 - mgetty
#
# This service maintains a getty on tty1 from the point the 
system is
# started until it is shut down again.

start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]

respawn
exec /sbin/mgetty -D ttyS1

When I try to dial in the modem fails to answer so I checked 
out /var/log/mgetty and here is the log entry

0/25 15:47:43 yS1 mgetty: interim release 1.1.36-Jun15
10/25 15:47:44 yS1 tio_get_rs232_lines: TIOCMGET failed: 
Input/output error
10/25 15:47:44 yS1 TIOCMBIC failed: Input/output error
10/25 15:47:44 yS1 cannot turn off soft carrier: 
Input/output error
10/25 15:47:44 yS1 tcgetattr failed: Input/output error
10/25 15:47:44 yS1 cannot get TIO: Input/output error
10/25 15:47:44 yS1 tio_get_rs232_lines: TIOCMGET failed: 
Input/output error
10/25 15:47:44 yS1 TIOCMBIC failed: Input/output error
10/25 15:47:44 yS1 cannot turn off soft carrier: 
Input/output error
10/25 15:47:44 yS1 tcgetattr failed: Input/output error
10/25 15:47:44 yS1 cannot get TIO: Input/output error
10/25 15:47:44 yS1 mg_init_device failed, exiting: 
Input/output error
10/25 15:47:44 yS1 cannot get terminal line dev=ttyS1, 
exiting: Input/output error


It looks like the init of ttyS1 is failing to me but looking 
online all I find are old HowTos  that went with setting 
this up back a few versions.
Any suggestions would be greatly appreciated.
                   Thanks
                    Linda

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