A:AnswerIt does not have a jack on phone or base but it does use Bluetooth and it is set up to accommodate 2 cell phones which you can link to the phone system as an extension of the 5 landline phones.
A:AnswerThat depends. We were having terrible ac hum problems on our old telephones. It wasn't any better with this telephone, either. Frontier wouldn't fix the problem. So, we switched to Xfinity Voice (VoIP) as the triple-play package was cheaper than Comcast Internet/TV and Frontier telephone. There is absolutely NO ac hum or static with these telephones with Xfinity Voice. This particular telephone system is noted as having really excellent range and it does.
If you are having static and/or ac hum problems on a landline telephone, the telephone is unlikely to be able to fix it.
A:AnswerYes it does, you can block the call after receiving it, or there is a section that blocks all unidentifiable calls with out names. That’s why I purchased the phone.