US Robotics 56K Faxmodem Installation Guide download pdf (Page 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:

http://www.usr.com/supporthttp://www.usr.com/support

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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.

Country Voice Online Support Hours

UK 0870 8444546 uk_modemsupport@usr.com 9:00am – 5:30pm, Monday – Friday

Switzerland 0848 840200 emea_modemsupport@usr.com 8:00am – 6:00pm, Monday – Friday

Dutch 0900 202 5857 emea_modemsupport@usr.com 9:00am – 5:00pm, Monday – Friday

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US Robotics 56K Faxmodem Installation Guide Page 8

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