Problems in Getting Started
If a newly-installed modem does not work properly, here are some likely
causes:
1. Improper physical connection (data cables not plugged in, etc.)
2. Power supply not plugged into receptacle and modem does not power up
3. Parameters set for the DTE or software prevent communication between
the DTE and modem.
It is uncommon for the modem to fail, although this does occur. Checking
modem operation is easy when the modem is an external device. Generally,
if the modem failed its self tests on power up, the front panel lights indicate
a problem. For example, if the MR (modem ready) light does not come on,
the modem may have a problem. Or if the HS light (external Smartmodem and
V-series products) does not come on, the modem may be improperly configured.
Some cases of apparent modem failure may be caused by a power surge; changed
parameters in your software that prevent it from finding the modem; an incompatible
component in the communication link; an improper connection; or simply a
device that is not plugged in or turned on. Before initiating the V.54 tests
described in this section, re-examine the communications equipment to make
sure none of the above conditions could be causing the difficulty.
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