Cordless System Tie
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Wireless cordless tie clip clip on Lapel Mic system |  |
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Audio-Technica ATR-3350 Lavalier Omnidirectional Condenser Microphone List Price: $39.95 Sale Price: $18.99  |
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Audio-Technica's newscaster-style omnidirectional ATR3350 lavalier is engineered for intelligible, accurate voice reproduction. This high-quality condenser is ideal for video use, and is a favorite choice for aerobics/dance/sports instructors... |
What is the feasibility of setting up a private cell phone network?
What all would setting up a small, private cell phone network entail?
I'm asking because I work at a production facility, which is fairly large, and several of the supervisors have been carrying around some rather bulky (and expensive) cordless phones, which are tied into our PBX.
I know nothing about telephony, but I just got to thinking that it'd be a lot easier if we could just get them cell phones that would somehow work with our system. Or maybe somebody sells cell-phone sized cordless phones and I just haven't found them yet.
I'm guessing this is probably going to be a no go for one of several possible reasons, but now I'm curious, so if you know about this stuff, humor me.
Thanks
Setting up a "private cell phone network" that would allow people to use their existing cell phones would be a bit of a challenge - especially if the different people have different cell phones from different service providers... For example, T-Mobile and AT&T use GSM/EDGE/UMTS while Verizon Wireless and Sprint use CDMA/1xRTT/1xEv-DO. You cannot use a GSM phone on a CDMA network and vice-versa.
Even if everyone used the same cell carrier (and transmission technology), the cell phone service provider bought the (expensive) frequency licenses to use the frequencies, so you would need their permission. And likely permission from the FCC.
Your company's IT folks would be able to easily find IP-based phones that could use the wifi (wireless LAN) at the facility - if 802.11 g/n is installed there. This would also tie into the company's phone system. It would be best if it was an IP-based VoIP phone system - or if a gateway between the TDM PBX and the Wireless VoIP terminals is installed to bridge those networks.
If everyone uses the same cell phone service provide (or if the company provides the phones and service), contact the service provider and see what their plans are for "FMC" (fixed mobile convergence) which uses cell phones with normal cell network connections AND a wifi transmitter/receiver built in to the (new)phone... or if the carrier is doing anything with femto cells - these allow small cell network base stations (using the cell phone service provider's frequencies) in poor coverage areas but are generally targeted to residential or small business and are not directly tied in to your company's PBX. There's been some talk of "pico" cells (bigger than femto, smaller than the large regular "macro"), but I have not heard of anyone developing or deploying them yet... These would not be directly tied to your company's PBX, either.
The problem with repeaters is that the cell phone company has responsibility to provide accurate location information in case of an emergency. Sometimes this is done using the GPS information in the phone. When indoors, it is possible that the GPS information cannot be updated by the phone because the satellite signal cannot get to the phone - in that case, the e911 location system uses a triangulation method that uses the time it takes to travel from the handset to (at least 3 - more is better) cell phone service provider radio towers. When you use a third party repeater, that "round trip delay" is not accurate. In an emergency - if the facility is large - locating that handset using the thrid party repeater will be extremely difficult and might not provide the FCC-specified location information accuracy.
Those "rather bulky (and expensive) cordless phones, which are tied into our PBX" may be the best bet, currently. From a security perspective, making the phones small and "sexy" begs for them to be stolen - even if they can't be used at home or outside the work area, and the thief won't want to bring it back...
As for small cordless phones that would connect to the PBX using an analog port (probably like those in use today), try hellodirect.
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Wireless cordless tie clip clip on Lapel Mic system | |
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US $16.99 | 6d 11h 26m |
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NEW Wireless Professional cordless tie clip clip on Lapel Mic system | |
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US $15.99 | 10d 5h 18m |
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Wireless Professional cordless tie clip clip on Lapel Mic system NEW | |
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US $16.99 | 5d 23h 14m |
Telephones - A great invention
The telephone, or the germ of the idea, goes back to the string telephone every child has played with, in which a tightly held string is stretched between two diaphragms. The scientist Robert Hooke in 1667 first demonstrated that the voice could be carried easily over considerable distances in this way.
The telephone is inexpensive, simple to operate, and offers its users an immediate, personal type of communication that cannot be obtained through any other medium. As a result, it has become the most widely used telecommunications device in the world. Billions of telephone sets are in use around the world. Telephone is very common now days, everybody has a telephone with himself there are many different uses of having it, like a person can attach a fax machine with the telephone & make as many faxes he wants. Nowadays, ADSL broadband is very common and if you have a telephone at home, then you can avail it and surf the Internet very easily. Even in big multinationals, a telephone is being used and is the main mode by which big multinationals communicate with their clients. Recently, IP TV has also been introduced with which a person can watch live television on the computer, But a person needs to have a telephone at home then only he would be able to avail the IP TV facility.
Another important landmark in the evolution of telephone is cordless phones. Enhancing mobility of the user, this phone has been well received by people not just in UK but around the world. It provides high flexibility to the talker as it is not always possible to stay tied up in the cords of the fixed telephones. This is particularly proven to be helpful in households and small firms.
Modern day telephones and cordless phones are easily available with leading stores in UK. You can purchase them even while sitting in the comfort of your home, simply by going online. There are quite a few god web stores that provide quality telephones and cordless phones that are manufactured by the leading brands.
About the Author
Dennis Jaylon is a renowned business writer who has years of experience in writing technical reviews, product descriptions and product feature analysis of technical gizmos like telephones. He has won appreciation especially for enlightening people about the latest communication gizmos home phones.
