modem question

[Ric Moore]

On 05/27/2012 07:14 AM, Linda wrote:
> On 05/27/2012 04:09 AM, Basil Chupin wrote:
>> On 27/05/12 18:35, Ric Moore wrote:
>>> On 05/26/2012 11:22 PM, Basil Chupin wrote:
>>>> On 27/05/12 07:45, Ric Moore wrote:
>>>>> On 05/25/2012 11:04 AM, Linda wrote:
>>>>>> I have a computer set up so you can dial in and work on it from
>>>>>> another location. Lately I am having problems that if the line
>>>>>> disconnects (our phone lines have problems) the computer is not
>>>>>> releasing the modem so you then can not call back in and reconnect
>>>>>> without having someone on site shutdown the computer and restart it.
>>>>>> My question is should I be looking at settings for the modem or for
>>>>>> mgetty to ensure that if the call is broken that ttyS1 is freed back
>>>>>> up and the modem is reset so it can answer the new call. In the past
>>>>>> the most I had to do was get someone to turn off the modem and turn
>>>>>> it back on in a few minutes to reset everything so you could call
>>>>>> in.
>>>>>
>>>>>
>>>>> AH!! Olde SKOOL!! It's your init string. It should automatically
>>>>> detect that the call is dropped and re-init itself which mgetty will
>>>>> pick up on. Just do a google search on your modem and you will find a
>>>>> good init string for it. I USED to know all this stuff by heart, but I
>>>>> have conveniently forgotten it all. I used to have 8 phone lines to my
>>>>> Linux based BBS with various modems that all had to be properly
>>>>> configured to avoid what is happening to you. Getting your init string
>>>>> correct is a beautiful thing. Keep it written down in a safe place,
>>>>> just in case something mangles it. :) Ric
>>>>
>>>> I think it is the S10 register....I think :-) .
>>>
>>> D2 is rattling around in my brain for some reason.
>>> http://www.56k.com/inits/a2z.shtml
>>
>> This series of posts has started me on the "nostalgia quest" :-) . A
>> few minutes ago I found this in my notebook as the init string for one
>> of my modems:
>>
>> B0 E0 S95=47 W1 X3 &C1 &D2 \N5 S11=75 % %C3 % %E2 &W &W1
>>
>> What the heck all of this means I now don't remember! :-D
>>
>> But in there is the "D2" you mention.
>>
>>> Hopefully, this a REAL modem, like an external US Robotics, and not
>>> some $2 internal "win-modem". Ric
>>
>> Oh god, not one of those "Win-modems" :'( .
>>
>> Mind you, there was one internal modem which used a Conexant chip
>> which performed flawlessly with a driver which, to begin with, was
>> free but then capitalism took over and the driver cost an arm and a
>> leg - but it WORKED. (Actually, I still have the modem somewhere in
>> the darkroom in the garage.)
>>
>> BC
>>
> No its an external US Robotics modem. I found the S10 stuff reading on
> Thursday and Friday and tried setting it. I'll look into what the D2 is
> for. It looks like everyone agrees I need to focus on modem settings to
> fix the issue not on mgetty's configuration. Some day I might have to
> give up on dialing in but most of our programs are still text based so
> it works fine, the hard part is finding a modem to buy hopefully this
> one will last a good decade or more like the one it replaced.

Can't beat whatcha got there. That is a GREAT modem and I still have 
mine. Here's the init string I used, BUT it slows down the modem to 14.4 
due to lousy phone lines out here in the country and ancient hardware at 
the cut-rate ISP.

AT&D2&C1X4V1Q0S7=70&B1&H1&R2s32=98~
You could make that s32=34 to go 28.8
It's the 56k part that blows up usually. Both sides have to support that 
PERFECTLY or else it all fails in horrible ways. For text, 14.4 or 28.8 
is perfectly acceptable.

Back in the day I used nothing but uugetty, which was just plain 
computer-talk-to-modem. mgetty has other features, like fax, etc., that 
were of no use for me. I had enough problems juggling 8 modems and 16 
terminals at once. At night the squalling racket of modems put me to 
sleep. Whanga whanga whang!

See if this helps
http://modems.rosenet.net/inits.php/116
But, you do NOT need any sort of driver. I don't think you have to mess 
with serial port speeds/protocol any more either. We used to have to 
doctor those settings a well, ...back in the dark ages. It was almost a 
mystical art form. :) Ric



-- 
My father, Victor Moore (Vic) used to say:
"There are two Great Sins in the world...
..the Sin of Ignorance, and the Sin of Stupidity.
Only the former may be overcome." R.I.P. Dad.
http://linuxcounter.net/user/44256.html