Serial line speed on SUN Ultra

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Hi,

Ph. Bourdeu d'Aguerre wrote:
> My apologies for the lack of explanation ...
> 
> With mgetty at 9600 or 38400, I obtain in log file :
> --
> 02/18 15:14:42 a/a  mgetty: experimental test release 1.1.1-Jan28
> 02/18 15:14:44 a/a  WARNING: DSR is off - modem turned off or bad cable?
> 02/18 15:26:14 ##### data dev=cua/a, pid=18306, caller=none, conn='14400/ARQ/V32/LAPM/V42BIS', name='', cmd='/bin/login', user='bda'
> 
> but at 57600 :
> --
> 02/18 14:58:47 a/a  mgetty: experimental test release 1.1.1-Jan28
> 02/18 14:58:49 a/a  WARNING: DSR is off - modem turned off or bad cable?
> 02/18 14:59:12 a/a  timeout in chat script, waiting for `OK'
> 02/18 14:59:12 a/a  init chat timed out, trying force-init-chat
> 02/18 14:59:36 a/a  timeout in chat script, waiting for `OK'
> 02/18 14:59:36 a/a  init chat failed, exiting...: Interrupted system call
> 02/18 14:59:36 ##### failed in mg_init_data, dev=cua/a, pid=18133
> 

Well, the log file is sparse (higher "-x <n>" values give more data) but
shows enough info - the modem doesn't react to "AT" then.

> at 	--> command echoed but no answer

Exactly. Have you tried 115200? There are a number of modems out there
that cannot do 57500, but can do 115200 fine.

(It's also possible that Solaris can *NOT* do higher baud rates than 38400
even if Sun claims so, I have received another report that 57600 does not
work before...!)

gert

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Gert Doering - Munich, Germany                             gert@greenie.muc.de
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