What does it mean when your phone says you got a missed call, but you didn't feel it vibrate or see the call?

[Anonymous]

It says I got a missed call from my boyfriend but there was no notifcation he was calling me. This has happened several times. Does it mean he only let it ring once?

[In_Trance]

It means that even though you didn't feel it vibrate or see a missed call you missed a call