Zypcom Z34-PC, User Manual

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4-12
4
To see if this is what you are experiencing, reduce the
maximum line speed to a lower number. (Try a real low
number first, for example, 14400.) Then, eventually go
back up to see at what speed the problem occurs.
With this information, you can limit your maximum
connection speed so that error control is always likely to
be successfully negotiated on each call, or you can force
error control on (\N4) in your initialization string and
make multiple calls in order to ensure that the
maximum line speed you have selected will consistently
give you a reliable connection.
Modem Does Not
Answer Incoming
Calls
If the modem does not answer incoming calls,
1. Verify that your terminal or computer supplies DTR.
(The Z34-SC’s DTR LED should be on). If not, force
DTR on. Type
AT&D0&Wn<ENTER>
2. Verify that the Z34-SC's AA LED (automatic answer)
is on. If not, while the modem is in command mode,
type
ATS0=1&Wn<ENTER>
Note that &W n in the command string writes the
command settings to memory. If you don’t specify
memory location
n (where n can be 0 or 1), the modem
assumes 0.