Knock

I knock
At a virtual door
I am but a path
Leading there
There is no threshold
But me taking the step
The right step
Forward
Are you there?
Has the sound of the modem
reached you yet,
Before being superseded
by glasses that project
the caller's face
on the back of your brain?
are you home
are you there ?
If you need me I am
between fast forward
and past perfect
pinging through time.