Trust Me - S2-E2

Corrected entry: In the episode 'Trust Me', Syd goes to see her mother at the F.B.I. holding area. Vaughn tells Syd to memorize a series of 3 digit codes to enter into the phone if it rings. In the next episode, 'Cipher', Sidney enters 4 digits. You can hear the beeps as she enters them.

Correction: There are 4 beeps because Sydney needs to enter the code, (3 digits) then hit "ok" or "enter".