While you wait for answers, we may have found some information which could help you.
Click here for Problems Phone CallWhy doesn't my telephone doesn't ring properly?
Philips Dect 122 cordless phone - connecting problem?
Philips SE435 Problems?
Philips SE435 has an ICM Recording fault?
philips dect 122 handset remove the word searching from screen?
Croaky Ringer on my PHILIPS phone DECT 225?