Difference between Roll Call and Noncontent

ROLL CALL vs NONCONTENT: NOUN

Such an event in a legislative body in order to determine if a quorum exists
The time of day fixed for such an event
The military signal given by the drum, trumpet, or other musical instrument for soldiers to attend the calling of the roll.
The act of calling over a list of names, as of a school or society, or of men who compose a military or legislative body.
The time fixed for such a reading.
The reading aloud of a list of names of people, as in a classroom or military post, to determine who is present or absent.
Calling out an official list of names

One who gives a negative vote in the House of Lords.
One who gives a negative vote; -- sometimes abridged into noncon. or non con.
In the House of Lords, one who gives a negative vote, as not being satisfied with the measure.

Faulkner, Thurman, Spice up, Let go, Springsteen, Pop quiz, Arquette, Hold on, Poehler, Back down, State senator, Put down, Special session, Come back, Move on

Absolute majority, Active voice, Malapportioned, Enantiosis, Thetical, Vote of confidence, Misaffect, Swing voter, Prosopolepsy, Free vote, Political machine, Cumulative vote, Negative, Nonregardance, Vote down

Winehouse, Find out, Cleese, Calm down, White people, Thurman, Spice up, Let go, Springsteen, Pop quiz, Hold on, State senator, Put down, Come back, Move on

Absolute majority, Active voice, Malapportioned, Enantiosis, Thetical, Vote of confidence, Misaffect, Swing voter, Prosopolepsy, Free vote, Political machine, Cumulative vote, Negative, Nonregardance, Vote down

Clerk, will you please call the roll call vote?
Roll Call Vote to waive reading, Roll Call Vote to adopt.
Roll call was taken with the following members present: Roll Call Present: Council Members Emick; Nassif; Stanton; Mayor Bishop Absent: Mayor Pro Tem Cusack.
Roll Call On roll call, Council President Stuckart and Council Members Beggs, Burke, Fagan, Kinnear, and Stratton were present.
ROLL CALL: Roll call was taken and a quorum was present.
The Roll Call Log Book will be filled in by the Shift Sergeant who is conducting the Roll Call.
Used for guests and staff, who must remain there while roll call votes are in progress and the roll call machine is open.
Roll Call Votes Roll call votes shall be taken to act on any agenda items when there is not a unanimous action.
Roll Call Roll Call was taken by Secretary Rachel Phillips.
ROLL CALL Roll Call indicated the presence of a quorum as follows: MEMBERS PRESENT: Ms.

NSLs are limited to noncontent information, such as a list of phone numbers dialed or subscriber information.
What is a good test to distinguish content from noncontent in the realm of CSLI?