The phrase "days of communication" is correct and suitable for written English.
This phrase can be used to describe a period or era in which communication was prevalent. For example, "The industrial revolution marked the beginning of the days of communication."
Which, in these now quaint days of leisurely communication and five-day work weeks, won't be seen till Monday morning.
Informal discussions resumed between the N.H.L. and the Players Associationn on Friday after four days of no communication between the sides.
Actually, it might be worse in these days of instant communication than when news from home came via airmail or a pre-booked phone call.
In 1898, American commentators claimed that serious cases of homesickness had "grown less common in these days of quick communication, of rapid transmission of news and of a widespread knowledge of geography".
Ever since the very first days of wireless communication, the voices of soccer on radio and television have sent a constant stream of nonsense, bull, flannel and mummery over the airwaves.
Even in these days of instant communication, there is no substitute for the pressing flesh of the lecture hall and the ability to sit in the bar and chew the fat with colleagues and rivals from across the globe.
An epidemic of such proportions as the one said to be raging in the Balkans cannot easily be kept a secret in these days of telegraphic communication and newspaper activity.
But it has recently occurred to me that email and text messaging -- two modes that are becoming increasingly indistinct with the advent of the smartphone and will surely merge into one technology in the future -- are actually a quaint throwback to the good old days of interpersonal communication.
Though touch can have a lot of emotional significance, she says, it tends to be less important than sight and sound in terms of day-to-day communication, which is why it may not have been studied as thoroughly in the past.
