Western Telematic PollCat III, Руководство по обслуживанию

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4.2.3. Incompatibility Between Modems
If the PollCat III is unable to make modem connections during a
Callback Routine at baud rates above 2400, this may be due to
modem incompatibilities related to error correction and data
compression.
This problem can usually be solved by disabling the error
correction and data compression features on PollCat III's internal
modem. Access the PollCat III Command Mode and use command
^B77 to re-define the Modem Reset Message as follows:
^B77,ATE0M0Q1&C1&D2&M0&K0S0=1 [Enter]
Note:
The " 0 " character in the above command line is a Zero.
For information on other modem related issues, please refer to
Section 10.
4-6
PollCat III Service Guide