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Interesting gadget from A.T. & T.

A while back we got a call from AT&T cellular that our little Nokia phone would soon be obsolete--as 2G service was going away. Unfortunately, this was the phone we used for those remote broadcasts where nothing else was available.

At least 3 football stadiums in our area have neither landlines nor any kind of internet service available. So we have to use cell--feeding the Nokia from a JK sport mixer. But the new phone AT&T sent use had no hands-free jack. Unfortunately, most small phones no longer have this 4 circuit mini jack used by the JK's adapter. I-phones have this type of jack--but an I-phone would last about 2 remotes before the sports pbp guys destroyed it.

So we trekked down to the AT&T store and found this gadget:

http://www.zteusa.com/phones/at-t-wireless-home-phone-wf720.html

The unit is about 4 X 6" and looks like a little intercom. One advantage is that it has an external antenna. It's basically a cell phone with an RJ45 jack that emulates a wired phone. We hooked up a cheap desk phone to it--provides a dial tone & ringer voltage (albeit not very loud ringer). The JK sport mixer has a touch pad & hybrid built in, so it is perfectly happy with this device.

We picked this up in anticipation of football season but Murphy intervened. We're doing a limited schedule of H.S. baseball and softball games, originally planned to be local over our RPU unit. Then at 10 this morning the baseball coach called to tell us the game we were planning to air today was changed to an away game in a neighboring county. So off we went to see if there was even a cell signal at the ball field (not a given around here). There was, and power in the press box (the JK and this unit both have batteries--but a ball game pushes the limit). Having that external antenna on this unit certainly helps.

Typical cell phone quality, but the game is on. We have an AGC and EQ at the studio on the phone line we use for remotes, which helps to take some of the shrillness out of the broadcast. There's a little buzz on occasion from the cell's RF (but we have that problem with the old phone--gets back into the mix somewhere).

This little unit would also be useful at those transmitter locations without land lines--you could hook a regular phone to it, which is handy where it is difficult to hear over a cellphone because of blower noise from the transmitter. Don't know if it would work with a Sine remote, though.
 
Tom, thanks so much for the report. I know I've been using cells for remotes for awhile (Verizon) and have picked up a quantity of the model we use so in case the inevitable happens I have a ready replacement. The ZTE device sounds like a modern fill-in for the old remote box I use to drag around in the 1970's with the Princess-type phone with the quarter-inch jack inside.
 
I'm with a TV station -- we use a bunch of these:

http://www.getwirelessllc.com/Telular_SX5-Terminal2.php

In our case we use them in the other direction -- to feed studio audio to air talent in the field. As long as you choose a reliable carrier they work quite well and do support an external antenna.

BTW we've had the cellphone buzz in microphones issue as well. One of our guys left his phone in his shirt pocket while on the air. He did remember to switch it to silent mode -- but the RF pickup on his lav mike was so strong you couldn't hear him anyway...
 
If it emulates a real landline, does it also recognize pulse dialing?

I know a guy who developed such a device, and it was being marketed to 3rd world locations where
there are telephone kiosks for those who don't have their own phones.
I wonder if it is the one he developed, or an AT&T knockoff of it?


read read read......
Nope. No pulse dialing.
 
I have mentioned these "gadgets" in other threads before. Ours is from Verizon and they call it the Direct Connect, but as noted almost all carriers have them under some name. We use them for all of our play by plays and remotes using the Conex Flipjack with great results. Before this we used the regular cell phone and often got that annoying buzz as the RF got back into the mixer, so the talent had devised various ways of hanging or taping the phone up and away from the mixer. So far, no such problem with the Direct Connect. (and weights a lot less than the Marti M30B!)

We also use it at both our transmitter locations, saving us a LOT of money on the phone lines we used to have there. And yes, so far they have played well with our remote controllers. Love 'em.
 
Re: Interesting gadget from A.T. & T... another Idea for broadcasters is

X-Link is a blue tooth device for cell phones to link to a land line phones.it will let a whole home phone set work off a cell phone. its from Amazon and it was cheep under $60.
 
There are lots of these types of adapters around. Tellular and the Dock-n-talk have been around for years. I think the dock type solutions are more efficient for personal use because the cell phone can be uncradled and used as a normal handheld. Quality varies by product and by carrier. Be careful about these if DTMF tones are being received at the cellphone end of the call. Some carriers and also some of the hardware bridges badly distort or twist the DTMF tones. We battle this regularly in manufacturing. Some just work better than others.

I'd also be wary of bluetooth interfaces. It's too easy to get disconnected or noise or added distortion from them. For mission critical work, I'd prefer wired, even if it's just from the mixer to the cell phone.

So, the Nokia 2G phone doesn't use the 2G unless you're using the Internet, right? When you're making a voice call, it's using GSM or TDMA or whatever your carrier uses. So, if that's true, why replace the phone if you only use it for voice remotes?
 
This model of Nokia is a basic flip-phone style. Apparently A.T. & T cellular is changing something else in a round of equipment upgrades so that the cells will no longer respond to this phone. At least that is what they tell us.

We use A.T. & T around here because there are some locations where there is no CDMA service. (A.T. & T is GSM). We also have a Verizon phone that can be activated for a couple of locations with no GSM service. Welcome to the third world...Appalachia.
 
Since A T and T advertises you can surf while talking is it possible to get a duplex call through so a Blue Box could talk through this cell phone? Anybody tried a bluebox or it's cusions on one of these?

As to using this on a remote control be sure to set the remote so it dumps the call after a certain amount of time if it doesn't hear a touch tone or this unit may not hang up when the caller does and keep the remote number tied up for a long time. CPC on these are notoriously bad.
 
TomT said:
This model of Nokia is a basic flip-phone style. Apparently A.T. & T cellular is changing something else in a round of equipment upgrades so that the cells will no longer respond to this phone. At least that is what they tell us.

We use A.T. & T around here because there are some locations where there is no CDMA service. (A.T. & T is GSM). We also have a Verizon phone that can be activated for a couple of locations with no GSM service. Welcome to the third world...Appalachia.

I've heard that AT&T will be eliminating 2G service (GSM/EDGE) in the future. The whole network will be HSPA+ or LTE. That's probably why they want you to swap out your phone.

Sucks for me, as it eliminates my "last resort" remote phone which is a Motorola M900 high power digital bag phone.
 
ellenparks said:
Since A T and T advertises you can surf while talking is it possible to get a duplex call through so a Blue Box could talk through this cell phone? Anybody tried a bluebox or it's cusions on one of these?

The Blue Box is a POTS codec. It uses the 56 k modem technology that we came to love during the 1990's. The Blue Box - as with any POTS codec, really wants to be connected to a real, telco-provided, non-VoIP phone line. That's just about the only way they'll work reliably.

If getting real, by-golly POTS is not an option, then the only other option that will work consistently for a POTS codec is - get ready - ISDN with a POTS adapter. That will make the equivalent of a real POTS line. But, the problem here is that both POTS and ISDN are going away.

Sorry, but it's time to dump the tech that was invented in the '90's and go with IP codecs - not that there aren't challenges there, too. But IP has consistently gotten better and will continue to do so.

Kirk
VP - Telos
 
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