Papa, very old, called to the phone (5)
I believe the answer is:
paged
'called to the phone' is the definition.
I can't tell whether this definition defines the answer.
'papa very old' is the wordplay.
'papa' becomes 'P' (NATO / phonetic alphabet).
'very old' becomes 'aged' (I've seen this before).
'p'+'aged'='PAGED'
Can you help me to learn more?
(Other definitions for paged that I've seen before include "Called to phone" , "called by Speaker" , "Called a name over a PA system" , "Summoned over a PA system" , "Called over a public address system" .)