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From: gedwards@ncratl.Atlanta.NCR.COM (Gordon Edwards)
Newsgroups: comp.dcom.modems
Subject: Telebit Trailblazer locking in high-speed tones
Message-ID: <547@ncratl.Atlanta.NCR.COM>
Date: 3 Sep 90 21:03:21 GMT
Organization: NCR Engineering & Manufacturing Atlanta -- Atlanta, GA
Lines: 20

I have a Telebit Trailblazer modem that I set to send the PEP high-speed
tones before sending the slower tones for 2400, 1200, and 300 baud.  This
modem talks regularly with another Telebit Trailblazer in PEP mode and with
a few other modems at 2400 and 1200 baud.

Sometimes the modem will answer the phone by sending the PEP tones twice
like it should but when will not switch to the lower speed tones.  The modem
will keep repeating the high speed tones until the modem times out and 
hangs up.  If I call back the same thing will happen over and over.

If I send a ATZ from the system it is connected to and then try the call
again it will cycle through all the tones. 

Question: Why is the modem locking in the high-speed tone sequence???
  How can I keep it from happening?

--
Internet: Gordon.Edwards@Atlanta.NCR.COM                  NCR Corporation
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