Are you using a telephone-line splitter?
A telephone-line splitter is a device used to split two or more telephone lines from the same
jack. Confusion can result from the existence of two different kinds of splitters. Parallel
splitters (also called “T” splitters) split a single line into two equal jacks, allowing two devices
to be plugged into the same line.
Line1/Line 2 splitters provide two unique telephone line outlets from a single jack with two
unique telephone numbers (two telephone lines are connected to a single jack). A Line1/
Line2 splitter must be used if you have a fax line and a voice line that are controlled by the
same jack. See
To connect the device to a jack that controls two telephone lines
for
instructions.
Not all splitters are compatible with the device, and not all regions/countries support the use
of splitters.
Note
Hewlett-Packard does not recommend using parallel, or “T”, splitters with the device,
because they can degrade the quality of the telephone signal. If you need to attach a
second device to the telephone line along with the device, plug the second device into the
device “telephone” port (the port that is marked with a telephone icon). See
Connecting
additional devices
for instructions.