The phrase "amount of communications" is correct and usable in written English.
You can use it to refer to the quantity of communication or messages, such as emails, sent or received. For example: "The amount of communications I receive on a daily basis has become overwhelming."
Even militaries from countries that don't maintain their own military satellites move a vast amount of communications via communication satellites.
Radio communication systems were said by many police to have been overwhelmed by the amount of communications.
There are legitimate privacy concerns about allowing the N.S.A. to vacuum up such an enormous amount of communications.
The agency, the memo noted, already had "in its databases a large amount of communications metadata associated with persons in the United States".
The objective is to enlarge the sampling time intervals and, thus, to reduce the amount of communications, while preserving a satisfactory error system performance.
Sonet is reliable, but it can also be inefficient, not only because a significant amount of communications capacity must be set aside for "protection" in case of a failure, but also because at the most basic level Sonet packages information in envelopes of 52 million bits of information a second.
In sum, the NSA is vacuuming up enormous amounts of communications involving ordinary Americans and people around the world who are guilty of nothing.
In recent months, the documents disclosed by Mr. Snowden have described the N.S.A.'s reach in scooping up vast amounts of communications around the world.
As things stand now, intelligence agencies can monitor vast amounts of communications and do so with only a warrant from a government minister to begin intercepting them.
The closure of 25 US embassies across North Africa and the Middle East demonstrated just how important the National Security Agency NSAandand its ability to bug huge amounts of communications, was in protecting the security of Americans, they insisted.
