Cell2Jack - Cellphone to Home Phone Adapter - Avoid Harmful Cell Signal Radiation. Make and Receive Cell Phone Call on Your landline Phone Free

Love this thing! When my cable company more than tripled the rate for my VoIP line, I decided to port it over to my cell phone, since everybody had my home # and only a select few had my fairly new cell #. This was a simple setup as long as you watch the video - I found the guide they sent with the unit to be unclear. Once connected, it works great! I have a Uniden set of 3 cordless handsets and connected the Cell2Jack to the Uniden main base station. Now I can answer calls to my cell phone on any of the Uniden handsets located throughout my home. There's a momentary delay between the call coming into my cell phone before ringing the Uniden handsets - and I also found that I have to give it a couple of seconds after I pick up the handset before my caller can hear me. I've also noticed that while checking my cellular carrier's voicemail messages from one of my Uniden handsets, the carrier's system did not recognize any keypad entries. I found a work-around: I could use my cellphone's keypad to hit "1" to listen to a message, for example, in order for the keypad's tones to be recognized. In one of the other review's I read here, the customer indicated that he was unable to use his home phone with Cell2Jack on conference calls - I'm wondering if it's the same issue, because dialing into a conference bridge requires entering a conference code, etc. - he might want to try using they keypad on his cell phone while using his home handset on the conference call. Despite these minor quirks, it is super convenient to be able to pick up the phone in my kitchen to answer a call, rather than either running to wherever I left my cell phone, or worse, having to carry it on my person even in my own home!

The heartbreak, the unnecessary complex setup are caused by the techno names and wordings.In fact, very simple to adjust, to rid of echo and strange noise.You just have to do a physical, mechanical push button volume adjustment on the linked cell phone; the buttons are on its edge/side.It is NOT the 'media volume', nor the 'Bluetooth volume' per se. All these techno names are confusing.Treat the Cell2Jack adapter as a Bluetooth earphone, on adjusting sound magnitude, then you are on the right track.The procedure:1. Set up, test and assure functionality. (Don't worry about poor sound for now).2. Use another cellphone and call the linked cellphone. Answer with the 'landline' phone. Must be functional first. (Forget echo, noise, etc. for now).3. On the linked cellphone, on its edge/side, push the up/downVOLUME BUTTONS, to vary the linked cellphone sound magnitude.Prefer 2-person job, the caller and answer party should be isolated/far apart to avoid sound feedback/echo.Ready to fine tune?4. Step One: Do not talk, total silence.Push volume button (on the RECEIVING cellphone), down enough until no strange noise on the CALLING cellphone.5. Step Two: The CALLER now talks, but with 2-second silence in between sentences. The CALLER listens for echo on the CALLING cell phone.6. Continue adjust, push the volume buttons on the RECEIVING cellphone until nearly/no echo yet loud enough on the **CALLING** cellphone.7. This is --THE-- correct setting on the linked cell phone. Remember/write down the volume setting.8. Done! (It is much simpler than it seems.)My setting is 1/4 (yes, way below 1/2 volume). This setting is too low for cell-to-cell talks though.If the linked cellphone volume were changed (like, for normal cell-to-cell), remember to re-adjust.Tech:Either the audio output to the Cell2Jack is too high, or the Cell2Jack pre-amplification is too high. It over drives the linked cell phone. This over driven, grossly distorted, digital signal transmits to the calling cellphone. Worse, the too-high analog sound is digitized. When digitizing over-driven input, strange analog noise results, may also create echo too. This is what the caller hears.Noise is amplified too high.The high spikes of noise are now digitized above bit 0, creating strange background sound on the caller side. Lower the amplification, or attenuate it, with minimize noise output, having a quiet noise floor.In TV, tape recorder, VCR, etc., we have AGC (Automatic Gain Control) ahead of the input of critical system which cannot be over-driven (e.g., driving the tape recording head, or hard drive read/write head). AGC will automatically, dynamically, adjust its gain, for good sensitivity yet not over driving. This could be implemented on the adapter by physical circuit or by software.It is not possible to externally attenuate at the phone line input of the Cell2Jack (say, by a potentiometer/resistor divider). The phone signal includes voice as well as high-Voltage ring signal ... all on the same phone wires.

Looked all over for a way to "hook-up" my cell phone to a small multi-line phone in the home office. Originally thought I wanted something that I could take from the headphone jack to an rj-11 (there aren't any), but the logic of the blue tooth interface becomes apparent when you grab your phone and go, and then come back later with it in your pocket, and you are seamlessly hooked back up without thinking about it. I can now work at my desk and use my desk phone (with wireless headset & lifter) and get my business, home and cell lines all on my 4 line phone. Only draw back is that the Caller ID only sends the phone #, but not the name through to the desk phone - but for $29 who can really complain. Also, when I emailed a question (about the #ID) to customer service on a Sunday afternoon they were back to me in 10 minutes. Could not have been easier to setup and audio quality is great. Thinking of getting a second one and transferring my copper line to an old cell phone sitting in the drawer and saving $50 a month.

This works great for answering and making calls using my old landline telephones. The first issue I encountered is that it could not reliably handle more than 2 of my phones on the line, sometimes not ringing one or more if I had them all on the circuit. Perhaps this is due to one of the phones?But my biggest problem is very frustrating that it does not seem to pass along the tones entered into automated systems "Please enter 2 to speak to customer support" or whatever. Always fails and whatever system says "sorry, the numbered you entered is not recognized". ugh. So then I have to run around the house to get my cellphone anyway. If they come out with a version that solves it, I'll love it!If that isn't a problem for you, it's highly recommended! Otherwise, more expensive units will do the whole job.