U.S. Robotics 5630 Schnellstartanleitung Seite 8

• The telephone line between your ISP and your modem must be capable of
supporting a 56K connection and contain only one analogue-to-digital
conversion. The 56K signal from your ISP begins as a digital signal. Somewhere
between the ISP and your modem, there will be a digital-to-analogue signal
conversion so that your modem can receive the data. There must be no more
than one analogue-to-digital signal conversion in the path from your ISP to your
modem. If more than one analogue-to-digital conversion occurs, your connect
speeds will default to V.34 (33.6 Kbps). There may also be impairments on the
local lines between your ISP and your modem. These impairments can prevent
or limit V.90/V.92 connection speeds. All telephone calls are routed differently,
so you should try making your 56K connection several times. One way to test
this is to dial into a long distance location. Long distance lines are often much
clearer than local lines. It is important to note that telephone companies are
constantly upgrading their systems. Lines that do not support 56K today may
support 56K in the near future.
• Your modem must be connecting to a V.90/V.92 server. A pair of 56K modems
will not connect to each other at 56K speeds.
Support Resources
If you have not fixed your problem after trying the suggestions in the "Troubleshooting"
section, you can receive additional help via one of these convenient resources:
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Contains useful product information, documents, and manuals. Log on to:
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1 Call the Dealer Who Sold You the Modem
The dealer may be able to troubleshoot the problem over the phone or may
request that you bring the modem back to the store for service.
2 Call U.S. Robotics Technical Support DepartmentTechnical questions about U.S.
Robotics modems can also be answered by technical support specialists.
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