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Single-Line (Duplex) Splitters
If you have separate answering machines or fax machines and want to use them on the same phone jack
as a phone a duplex or single-line splitter is used. A duplex splitter divides a single phone line between two
new jacks. Devices that are plugged into a duplex splitter share the same line and phone number. This splitter
provided by ooma is a duplex splitter and is used to share your line between your DSL modem (if applicable)
and the ooma Hub.
Two Line Splitters
Some homes with more than one phone number have wiring that combines both lines into one jack. With
these jacks, a splitter divides the single jack into two new jacks, one for line one and the other for line two.
This is a two-line splitter and phones plugged into it will be on different lines and different phone numbers. If
you have a two-line splitter, just install the ooma Hub or ooma Scout between the phone and the splitter jack,
instead of between the phone and wall plate. Be sure that all ooma Hub and ooma Scout devices are plugged
into the same line (the same phone number).
Dual-Jack Wall Plates
Phone wall plates come in one and two, or dual-jack, conīƒ€gurations:
Wall plates with dual jacks are basically just splitters built into your wall, and they can be single-line split-
ters (duplex) or two-line splitters just like external splitters. If you have a dual-jack plate with two lines, make
sure you install your ooma device on the right phone jack. All ooma Hub and ooma Scout devices need to be
plugged into the same line (the same phone number).
appendix a: identifying your equipment
Phone Jack Phone Jack