Same scum, different Spoofed number - 301-310-6002 Caller ID "Unavailable" - Typical scum bag human sewage scam call... Augmented a "big red button" call blocker with a Sentry Ver 2.2 Call Blocker over a month ago - the Sentry is the newest form and has better tech than the old reliable CPR Big Red Button Ver2 Blocker that's been in service since late June '14. The Sentry blocks ALL the incoming trash that's hit it so far, if it maintains the length of service the CPR has demonstrated it is the better unit to have... Having both does have a few nice effects - the CPR keeps a running total on what number has called how may times - current "winner" is 43 calls blocked from the same number.
Tempting as it might be, it's best to NEVER answer these turd's calls and engage them - it only puts your number on the auto dialer's "call more" list since it confirms the auto dialed number used is a "live number" with a possible sucker on the end... They could not give a crap less if you ask to be "Taken off the list...."
A "no one there" call is what I interpret as a "probe" call just to see if there is a pickup or answering machine worth calling back. It's mostly all automated so the scum just act as drones waiting for a pickup and possibly a voice - I still get lots of the one time "probe" type calls followed with a few that are repeat call numbers for a few weeks then all the numbers and CIDs get changed to different ones to try for all new people they can try and defraud.
Too bad there is no listing in the "Call Type" that actually matches the real manner of the scum making the calls - there should be at least "Scammer" in the list.... Some where there may be an actual valid telemarketer making unwanted calls...and that's the only case that "telemarketer" really fits...