Beetel — beetel m71 landline - save name

I bought beetel m71 landline recently. I am unable to find any information on how to store contacts by their name. Can you please guide how to store number with name so that the name gets displayed when we get the call.

I have enabled called id functionality andi can see the number being displayed but i would like to see the name as well along with number and i cannot see how to do that in the manual.

Thanks,
Joshi