I have recently purchased a motorola mod L603m cordless phone and cannot get the phone to ring. How do I get the units to ring?

Contact Looking For Help for assistance.

Mark
Motorola Mobility Support

Contact The point of purchase. The phone should come with a charger. Or you can contact Looking For Help to find a replacement.

Mark
Motorola Support

Contact Looking For Help

Mark
Motorola Support

Contact Looking For Help for assistance.

Motorola Support

you can find the user manual here.
http://www.motorola.com/on/demandware.static/Sites-Site/Sites-Motorola_US-Library/default/v1337848113914/Products/Cordless-and-Corded-Phones/L601/L60x-User-Guide-ENGLISH.pdf?version=1,337,855,612,000

most work like this, you make a call, ask first caller to hold, press flash, make another call, press flash again

I think you all totally missed the question. The phone set comes with the base and 2 extensions. He is wanting to BUY a 3rd extension for this unit, if I am reading this correctly. I have the same phone set and I have not found anywhere that sells additional handsets. Sorry.

You can either ring the manufacturer for the part.
But this is expensive, or try on ebay for a decent price.
Hope it helps!

try deleting all headsets using primary headset (marked with no.1): 4-base/8-deregister/default pin '0000' and register them again using each headset (3-headset/8-register/same pin). it worked for me.