What is the meaning of the poem "Phone Booth" by Voznesensky?

Phone Booth

Someone is loose in Moscow who won’t stop
Ringing my phone.
Whoever-it-is-listens, then hangs up.
Dial tone.

What do you want? A bushel of rhymes or so?
An autograph? A bone?
Hello?
Dial tone.

Someone’s lucky number, for all i know,
Is the same, worse luck, as my own.
Hello!
Dial tone.

Or perhaps it’s an angel calling collect
To invite me to God’s throne.
Damn, I’ve been disconnected.
Dial tone.

Or is it my old conscience, my power of choice
To which I’ve grown
A stranger, and which no longer knows my voice?
Dial tone.

Are you standing there in some subway station, stiff
And hatless in the cold,
With your finger stuck in the dial as if
In a ring of gold?

And is there, outside the booth, a desperate throng
Tapping its coins on the glass, chafing its hands,
Like a line of people who have been waiting long
To be measured for wedding bands?

I hear you breathe and blow into some remote
Mouthpiece, and as you exhale
The lapels of my coat
Flutter like pennants in a gale.

The planet’s communications are broken.
I’m tired of saying hello,
My questions might as well be unspoken.
Into the void my answers go.
Thrown together, together
With you, with you unknown.
Hello. Hello. Hello there.
Dial tone. Dial tone. Dial tone.