The idea is you unplug the curly handset wire from the back/bottom of the phone and plug the splitter in the back/bottom instead and then you plug the handset and headset into the splitter, cradle ...

I recently discovered that my DSL splitter / filter for my phone was causing connection issues. Any recommendations for a quality one? I only have the one landline running in the house at this ...

Plug a phone splitter into the phone wall jack you plan to use for the fax machine. The splitter will allow you to plug in both a phone and the fax.

The new DD1X1 modular wiring device with 110 phone distribution for up to 4 lines now features an 8-way 2050 MHz splitter.