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ital-to-analog signal conversion so that your modem can receive the data. There must be no
more than one analog-to-digital signal conversion in the path from your ISP to your modem.
If more than one analog-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 tele-
phone 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 con-
nect to each other at 56K speeds.
PROBLEM: My modem isn't achieving the promised faster connections.
Possible Solution:
In order to achieve a V.92 connection:
•
The server you're dialing in to must support and provide a digital V.92 signal. Your ISP can
provide you with a list of dial-up connections and information on what those connections
currently support.
•
The telephone line between your ISP and your modem must be capable of supporting a 56K
connection and contain only one analog-to-digital conversion.
•
Your modem must be connecting to a V.92 server. A pair of 56K modems will connect to each
other at V.34 speeds (33.6K).
The V.92 standard is an advancement in 56K technology. V.92 offers three functions to enhance
the current V.90 standard.
•
The first enhancement is the "V.PCM-Upstream" technology, which allows a modem's
upstream communication to reach speeds of 48,000 bps.
•
The second enhancement is "Quick Connect", which permits quicker dial-up connections by
allowing the modem to remember the line conditions of a service provider that supports
V.92. The first time that you connect with your service provider, the modem will perform the
full training sequence and store the information it receives. This eliminates the need for the
modem to go through the full training sequence during subsequent connection attempts,
reducing the connection time by 30 - 50%. If the modem is unable to make an optimal con-
nection any time after the initial attempt, the modem will perform the full training sequence.
•
The third enhancement is the "Modem On Hold" technology, which allows your Internet
connection to be suspended when there is an inbound telephone call and you have the Call
Waiting feature from your local telephone company. You can then return to the connection
when the call is completed without losing the connection. If you are connecting to a service
provider that supports V.92, you will receive a message informing you of an incoming call. In
addition, if you subscribe to Caller ID service, the number of the incoming call will be dis-
played in the computer's message window. You will then have the option to accept the call
or to ignore it. If you are connecting to a V.92 server and choose to accept the call, another
message will appear notifying you of the length of time that the provider's system will wait
on hold before the data connection is terminated.
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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