The NYT is saying that some Malaysian government officials are confused about how ACARS works, leading to the confused reporting.
The above comment is accurate: the last ACARS message was received at 107, and the next one was expected at 137. The voice communication was logged at 119.
http://www.nytimes.com/2014/03/18/world/asia/malaysia-airlin...
the next ACARS message was scheduled to be sent after the goodbye, but it was never received.
the time when the ACARS was disabled would be within this window.