3Com 005699-00 -, Руководство пользователя

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T
ROUBLESHOOTING AND
H
ELP
R
ESOURCES
6-3
ATX3DT18475454248 (the 3Com Macintosh BBS) and press ENTER . If you need to
dial 9 to obtain outside phone access, insert a 9 in the above phone number immediately
before the 1. This string bypasses the dial tone, allowing a connection if the modem is
functioning properly.
Your modem cannot achieve a 56 Kbps Internet connection.
Possible Solutions:
V.90 supports speeds of up to 56K. Due to phone line restrictions, you will achieve a lower
connection; this does not mean you have not achieved a V.90 connection. Our research
shows that the vast majority of telephone lines in North America support 56K connections.
However, due to unusual or old telephone line configurations, some users will not be able to
take full advantage of this technology.
It is important to remember that your line conditions may change, so you may be able to
make faster connections in the future. To make sure that you can use 56K technology,
perform the following tests:
a. First, make sure your modem supports V.90. You can verify that your modem
supports V.90 by opening a terminal application (RapidComm, HyperTerminal,
ZTerm, etc.) typing
ati7 and pressing ENTER . If the Options line has V.90 listed,
then your modem supports 3Com 56K technology.