NCIS - NCIS Cell Phone Vs. Landline
NCIS Season 6, Episode 17, South by Southwest
About 6 minutes into the episode, Donozo is on his cell phone, talking to his great uncle's lawyers secretary. In the first shot, he is using his cell phone, then in the next clip he is using his landline desk phone. In the last few clips of the conversation he is back on his cell phone.
I watched the old episode here: