[P1] disconnect

[Jack Rodgers]

On Friday, August 22, 2003, at 07:31  PM, Mike Beede wrote:

>> darn, using my phone modem I was uploading a 2MB file, taking its 
>> sweet time at 46K, and suddenly it disconnects because of "no 
>> response from the other side". Is there some time cutoff on this 
>> thing? I think it had run about 15-20 minutes before the disconnect. 
>> Is there some way to tell it "don't disconnect until an hour passes?"

Yes, there is; however, if the other side has disconnected waiting for 
data from it is a frivolous waste of time...

S30 register (Disconnect inactivity timer)
The S30 register sets the length of time, in tens of seconds, that the 
modem will stay on-line
before disconnecting when no data is sent or received. Any data 
transmitted will reset the
timer. The timer is inoperative in synchronous mode. The range of 
values for this register is
0–255. If S30 equals 0, the function is disabled; this is the default 
setting.

There are other settings relative to disconnecting.

Some carriers will disconnect you during times of heavy activity and I 
would assume the have a priority list for whom to disconnect and whom 
not to disconnect. Certain times of day almost insure that I get 
disconnected from Sprint while I can stay online for hours at other 
times of day.

Apple's modem scripts can be adjusted using a text editor and if you 
try you will see that they are really overly complex and possibly 
incorrect.

I have the AT Commands.pdf file that Apple distributed years ago and 
will send you a copy if you send me a private email requesting it.

---
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<http://www.JackRodgers.com>
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JackRodgers at earthlink.net