This is the 12556th most frequent Portuguese word.
telefônicos
"Telefônicos" means "related to telephones" in English.
Here, 'telefônicos' is an adjective describing 'serviços', indicating the services related to telephones.
Os serviços telefônicos estão funcionando perfeitamente.
The telephone services are working perfectly.
In this sentence, 'telefônicos' qualifies 'números', showing a direct relationship to telephones.
Rastreamos os números telefônicos associados ao cliente.
We tracked the telephone numbers associated with the customer.
'Telefônicos' in this example characterizes 'sistemas', referring to systems designed for telephonic communication.