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Date:      Sat, 21 Dec 1996 12:29:01 -0600
From:      Richard Wackerbarth <rkw@dataplex.net>
To:        dicen@hooked.net
Cc:        freebsd-questions@freebsd.org, Nate Williams <nate@mt.sri.com>
Subject:   Re: User ppp not hanging up modem.
Message-ID:  <l03010d01aee1dc47c650@[208.2.87.3]>
In-Reply-To: <32BBB4C1.794BDF32@hooked.net>
References:   <Pine.OSF.3.95.961221100409.6960B-100000@professor.eng.umd.edu>	 <32BBA85F.41C67EA6@hooked.net> <199612211751.KAA27123@rocky.mt.sri.com>

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>Nate Williams wrote:
>>
>
>> That's *NOT* the correct thing.  What happens when for some reason
>> PPP happens to send the sequence '+++' to the modem?  All of a sudden
>> it'll drop into command mode and you're screwed.  User-PPP (as well as
>> all other PPP/SLIP implementations I've worked with) assumes that you've
>> disabled the escape sequence at least temporarily.
>>
>Interesting. But, what exactly is the prabobalitity of that? I will have
>think about this one.

Actually, NOTHING happens. The escape sequence must be followed by a period
of idle (output only) time. If you transmit any character before the
timeout period expires, the modem ignores the sequence.





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