filtering on cellphone were callerid is included is easier than 12$/month extra cost CID on landline
I have 2 lines, one I give to businesses wanting a number, and the other for those that need to contact me. Neither phone is listed. The former doesn't have CID which is $12 extra/month. The latter I pay the extra $12 for.
Oddly enough, my computer dialed phone spam only comes in on the line that does not have caller ID -- usually at the rate of a few /week to as many as a few/day, starting at 7-8am and ending as late as 7pm. Of side interest, when I had a line problem with static on the line, the phone company began testing (for 10 days before they could send someone) on the line. During that 10 days, I received 0 (zero) calls on the non-CID phone. Coincidence?
Both lines have had similar probs in the past and they usually just try to find another pair and move me over to it -- that usually gets rid of the problem for another 18+ months. But before the line test period, I had several calls/week (usually selling credit card services) with them starting up again after the line was repaired (it wasn't out-of-order, just had some static on the line and the line w/static wasn't even the number they call in on).
Since then its back to the same -- junk calls on the no-CID line, and only "allowed" non-profit+political calls on the phone with the $150/year CID service.
So does the local phone company (PacBell->AT&T) have a financial incentive to not stop robo calls? In my case, I get relief on the unlisted phone with CID. The phone company refused to put a trace on my other line to record the incoming numbers and says it is up to me to pay for CID if I want that protection, er, service. of course even 30 years back phone companies in this area had complete logs of incoming calls, now stored for law-enforcement perusal for years.
I ask for a 'white list' service but refuse that, they also refuse to block calls w/no callerID unless I pay for callerID. Seems like the phone company has more than a little incentive to make sure everyone pays for CID as part of basic phone service.