Re: problem with cinterion TC63i rs232 modem

[Thomas Bechtold <thomasbechtold jpberlin de>]

Hi Aleksander,

On 06/10/11 10:05, Aleksander Morgado wrote:
> Hey Thomas,
>
> > To reproduce, i do the following:
> >
> > 1 ) stop NM, MM and disconnect the modem from power supply
> > 2 ) connect the modem to power supply
> > 3 ) start MM: modem-manager --debug --log-level=DEBUG
> > 4 ) start NM: /etc/init.d/network-manager start
> > 5 ) nmcli con up uuid baa2af1b-e21e-7bcf-f1ac-1a775c46ddc3
> >
> > No i have no connection (see debug log).
>
> The modem ends up replying NO CARRIER at some point when trying the
> connection the first time:
>
>          [mm-at-serial-port.c:298] debug_log(): (ttyS1):<-- '<CR><LF>NO
>          CARRIER<CR><LF>'
>
> > 6 ) /etc/init.d/network-manager stop
> > 7 ) kill modem-manager
> > 8 ) start MM again: modem-manager --debug --log-level=DEBUG
> > 9 ) start NM again: /etc/init.d/network-manager start
> > 10) nmcli con up uuid baa2af1b-e21e-7bcf-f1ac-1a775c46ddc3
> >
> > Now i have a working connection.
>
> In the second try the modem didn't return NO CARRIER, connection
> succeeded.
>
> Is this something that you can reproduce always? I don't recall having
> seen this situation myself when writing the Cinterion plugin.

Yes, i can reproduce this. Tried 4x and the behaviour is always the same.