3Com 005699-00 -, Руководство пользователя

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b. Make sure that the number you’re dialing is an actual V.90 server. Some ISPs may
have a mixture of V.90 and non-V.90 servers. You can check this by contacting your
ISP and asking them about 56K technology or V.90 availability.
c. If it is a V.90 server, you may want to try calling it a few more times. Remember, the
phone company routes each call in a different fashion each time you place a call. For
testing purposes, you may want to call into the 3Com BBS at 847-262-6000 or the
3Com Macintosh BBS at 847 545 4248, which have V.90 servers attached to them.
d. If you are able to connect at V.90 speeds on the 3Com BBS, there may be something
between you and your ISP that is preventing a V.90 connection from being
negotiated. You may want to contact your ISP and see if they have received similar
reports from other customers.
e. If you do not make a V.90 connection to our BBS, your line might not be capable of
supporting V.90 speeds. If that’s the case, then see the next item in this list.
f. If you are experiencing consistent problems with V.90 connections (i.e., not making a
high speed connection, abrupt disconnections, etc.), you can call 3Com Technical
Support for U.S. Robotics modems at 847 262 5151.
When you try to connect to the Internet, you get a error of “No
Dial Tone.”