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Question: I call my home with my cell, it displays my cell phone number on both the phone and the Pro Blocker but the call does not go through.  It is not a blacklist issue either.  I have AT&T U-verse and it is connected via series installation maybe I should change to the parallel installation?
Document: I have one corded phone and the cordless base with 4 handset charging bases. Because I installed it in series, the corded phone does ring once before the blocker either blocks or allows the call, but for now, I grin whenever I hear the one ring, knowing someone's getting blocked. In the future, I may change to a parallel install or simply mute the ringer on the corded phone.I would have given this 4 stars, but it's really expensive for what it is/does.
The Pro Call Blocker has worked absolutely great for me. I use two Panasonic phones and the number of calls each phone can  block is limited to 30. However, my home phone is overwhelmed by telemarketing calls etc. I purchased the Pro Call Blocker over a month ago and it has been fantastic. When a call comes in that is unwanted, I just press the Blacklist Button and that call is blocked.
11/13/2013 update:Still like the product. I did have one major issue which the vendor addressed promptly. For some reason, after a few weeks of use, my wife's cell phone was blocked. It wasn't on the blocked number list, but when you called from her phone, it would ring once on the cell phone end and not at all on the home phone.I emailed the vendor and received a response the same day. I was given a reset procedure for the box.
I took a class in electronics and passed with flying colors, but I have to admit this piece of plastic is giving me a run for my money. I don't give up easily. I have found on my Uniden phone, that if you go in to the Handles Way ( the # 6 step) and change the setting to block ALL "OOO 000 0000, no name no number,etc It has blocked all cell phones. I had to set it back to default which is OFF.
I checked the Caller ID on my home phones and they all displayed my cell number. I tried different phone jacks, different cords and different splitters and nothing helped. So, I decided to send it back.I have a few comments about this unit. It is very cheaply made and in my opinion certainly not worth the price charged. Maybe half that would be more appropriate. It is awkward to program and set up by the fact you have to use a telephone handset to enter the setup information.
It seems to have blocked most (but not all) of the numbers with weird/fake caller IDs. I've blocked maybe 20 numbers so far. One blocked number still gets through for some reason, but overall, I am pleased with the product. Another issue is that a couple of friends' cell numbers info does not come through although they do come through if you disconnect the box.
This blocker has cut down the number of telemarketing calls from about a dozen a day to maybe one every other day. The directions are confusing and I was concerned that it would be difficult to use. Better directions are available on the net and it is pretty much self explanatory after it is connected. Does what it is supposed to do far better than the &#34;National Do Not Call Registry.&#34;
I hooked it up in series but it would not let me see the incoming calls. So hooked it up in parallel and it does not stop all calls when I push the blacklist button. Also I cannot see what number are blocked when i push the blacklist button it doe snot show any numbers. So suppose I got taken. I would not recommend this thing to anybody.
The cable service can display incoming calls via the DVR. OOA calls have a phone number of '0' and I see them listed in the call log but the phone does not ring. I continue to use my cable service to block specific phone numbers. I have not used the T-Lock for anything other than the OOA calls and I am satisfied that it does that very well.
But there is a delay when any call comes through because the Call Blocker is reviewing the call, e.g., to determine if it's on the "Blacklist". So,  whenever we receive a call, the LCD on our phone just displays Incoming Call. I've yet to determine if the caller is identified after so many rings. The "delay" occurs when one calls a phone with this particular Call Blocker. There will be a "click" sound followed by seconds(?) of silence.
Answer: I need to use a series setup as I need to use phone for programming the unit and to "reboot" unit when it periodically freezes up but simply taking phone hooked up to downstream side of unit momentarily off the hook. I am unable to use Pro Call Blocker when using a parallel installation because the phone has no effect on unit.http://hqtelecom.com/pro-call-blocker-version1-manual/