Re: Blocking Calls
11-30-2010 11:09:25 AM
There are multiple issues here. This kind of functionality would likely have to be built into the handset, which would entail customizing the operating system of the phone to support this. I'm not sure that AT&T (or any carrier) could offer this as a service without a significant investment in building a system that would have to provide a real-time interface with the phone.
Then there's likely e911 (enhanced 911) compliance issues, as I believe that the phone has to support a callback feature in the case of a 911 call that is disconnected. That would be another issue that would likely have to be worked around.
As far as apps go, this is something that would have to be able to run as a memory resident process. I'm not even certain the iPhone would allow this, as there are no public APIs (the interfaces between programs) to certain parts of iOS. It's not a trivial undertaking to do this, and I'm not sure most phones were powerful enough to handle this until just a couple of years ago.
E the P wrote:
AT&T Provides that option as well. And that's the issue. I don't know the telemarketer's number until he/she calls. And the drunk who calls me at 3am looking for "Fred" is not likely to call again. I'm not interested in blocking chronic callers, who use the same number, (which BTW most telemarketers don't), I want to block all calls not in my contact list and stop me from being bugged in the first place.
And here is the root of my question, blocking known numbers has been around for years, but blocking all but those numbers not in my contact list has never been available. Yet search Google, you will find thousands who want this feature. I can't believe that the AT&T executives are not aware of this need, so I suspect there is some "reason" why they can't, or won't, offer this feature.
I was just hoping someone could shed some light on the subject.