How do I unmute doro cordless phone. There is a failing tone but no ring when someone rings it , the volume is full On

SOURCE: Doro 540R Cordless

press and hold speaker button until p is dispayed on the hanset press 5 current setting will be displayed select by scrolling with left and right keys press speaker button to save

SOURCE: Ring Volume is too Low

sound is very low

SOURCE: my phone is not ringing on incoming calls

did u try removing the battery and reinserting after 2 min..

and if already tried,

then try dialing from oter phones, or check the assign tone in ur phone contact from which ur testing to be assigned with some ring tone...

SOURCE: my phone isnt ringing

change the BUZZER, it is the source of RINGING and all other TONES

SOURCE: NEC Dterm80 ring tone

To here ring types hit speaker then 711, then 1 for internal rings (select 2 for outside ring selection) then 1-8 the ring type.
To set ring type hit speaker then 720 (follow all the steps above).