Hi,
There are no lot of chance to hangup a modem with the +++ ATH0 string in a mail
or in a file.
When a modem is in Online mode (Send/Receive data) to switch it in Command mode
(AT) it need to receive the +++ string with a minimum time guard between before
the first and the last + and also a maximum time between +.
Usually this guard time is 1 second.
So that mean if you want to switch to Online to Command mode , you need to wait
1 second after the end of data transmit and the first +. Then you need to send
the 2nd + within a 1 second timeout (same thing for the3rd +) .
In same modem this guard time can be change through the S12 register.
Philippe
[EMAIL PROTECTED] on 10/23/99 07:05:38 AM
To: [EMAIL PROTECTED]
cc: (bcc: Philippe Vivarelli/Intl/Conexant)
Subject: Hangup string in e-mail message?
If sending "+ + + A T H 0" in an e-mail message (without quotes and spaces)
hangs up the modem (or does it?), what about receiving? Suppose somebody sends
you such a message from a LAN connection? Such a sequence could occur in a
base64-encoded message as well as a plain-text file. Suppose such a string
occurs in a file being uploaded or downloaded by FTP, or on a Web page?
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