The phrase "a quiet call" is correct and usable in written English.
It can be used to describe a phone call or communication that is conducted in a soft or subdued manner, possibly to maintain privacy or discretion.
Example: "During the meeting, she received a quiet call from her colleague, which she answered discreetly."
Alternatives: "a soft call" or "a muted call".
I'm touched by a commuter who will make a quiet call home, whispering, "I'm on the 6 13, darling; meet you at the station," and then hang up.
A German Green party politician who poured a bucket of ice water over his head for charity has caused an stir online by slipping in a quiet call to legalise marijuana.
The military order of the Templars, who occupied the Temple Mount in Jerusalem, allowed Muslims to pray individually in the al-Aqsa mosque, while even in the heat of battle a knight might be allowed the dignity of answering a quiet call of nature before returning to the fray.
Taking a quiet call at a fancy restaurant would mean a lower volume level so as not to blow out your eardrum, while the Series 2 would crank up the sound while at a loud party.
In the last couple of days, MPAA made a quiet call to some people in the educational technology community.
As a small woodland bird with cryptic plumage and a quiet call, the Eurasian treecreeper is easily overlooked as it hops mouse-like up a vertical trunk, progressing in short hops, using its stiff tail and widely splayed feet as support.
Some parrots have a quieter call then others.Most parrots are not good for people living in apartments, as the noise may irritate your neighbor.There is no way to get a parrot who will NEVER scream.most will do so a few times a day for at least 15 minutes or more.Its a natural thing for them to do.
The movie is a quiet, methodical call to action.
Collared Plovers give a quiet "prrp" call when alarmed and in flight.
On Friday, Joshua Earnest, the White House spokesman, wondered why the Germans hadn't just handled this with a quiet phone call, rather than by going to the media.
A quiet phone call from one of Freshler Feld's senior bankers persuades Kelch not to downgrade the stock of the company whose bonds the firm underwrites.
