Devolo MicroLink 56k Fun USB - Manual (Page 18)

Appendix
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| devolo MicroLink 56k Fun USB |
18
EN
For advanced users: Numbers for accessing outside lines and wait commands
can also be typed in manually in front of the phone number. Because a delay
can occur after the number for an outside line is dialed and before the outside
line is connected by the PBX, you may have to specify pauses between the
outside line number and the phone number (indicated by one or more
commas, for example: 0,,12345), or better yet, use the wait command (w). For
most private branch exchanges, 0w (e.g. 0w12345) is sufficient. Under
Windows 2000, letters cannot be used in dialing parameters. Instead, use
commas after the outside line number (e.g. 0,,12345).
Question Why does my Internet connection suddenly disconnect
without me wanting it to, and why is it so slow (slower
than on other analog connections)?
Causes b The hardware installation within the computer case has to be clean and
correct. By clean and correct, we mean: few junction boxes, and tightly,
cleanly and correctly connected electrical connections (using screws and
fasteners), etc. Magnetic and electric fields, such as halogen desk lamps
placed on the modem, can cause interference.
b
For lack of enough available phone jacks, two devices may have to share
the same physical line. To this purpose, multiplexers are installed at the
customer junction line point. If a multiplexer is in use, fast V.90
connections are not possible. Instead, the top transfer rate will be 33.6
Kbps. You can contact your telephone service company for more
information and to find out if a multiplexer is installed on your line. In
Germany, business subscribers call Telekom at 0800/3301172, and
residential subscribers call 0800/3302000.
b
Find out whether any additional services are enabled for the analog
network, such as call charge metering, call waiting, etc. The signals sent
over your line by such services have little effect on voice calls. However,
they act as noise interference on a data line and should be disabled for
the duration of data connections. In apartment buildings especially, many
phone jacks are installed and used on many floors. Often, the
installations of these terminals are parallel, which is a code violation in
Germany. Germany's telephone networking codes require that the house
connection is nonreflecting at a specific impedance. Connecting several
devices having the same impedance in parallel reduces the total
impedance. This should be avoided as much as possible. A clean
technical solution to this is the so-called telephone toggle switches,
which prevent a second phone to listen in on an existing call, or small