vtech phone lcd display manufacturer

Las Vegas – Leading cordless phone manufacturer VTech Communications, Inc. (a wholly-owned subsidiary of VTech Holdings Ltd. SEHK: 303; London SE: VTH; ADR: VTKHY), today unveiled its 2007 product line-up, featuring dramatically updated cordless phone designs in its sleek and slim Digital Enhanced Cordless Telecommunications (DECT) 6.0 systems. Also rounding out the product catalog are new expandable 5.8 GHz phones that offer greater flexibility to make and receive calls from anywhere in the home.

“With the innovative design of our new DECT 6.0 line-up, VTech is the first to bring a fresh approach to the cordless phone market with a new thin form factor,” said Matt Ramage, vice president of product management, VTech Communications, Inc. “The DECT phones, along with

our other new offerings, deliver superior sound and security quality, while offering a wealth of features consumers have come to expect in cordless phone systems.”

As a leading manufacturer of European cordless phones featuring DECT technology, VTech has leveraged its expertise to develop a stunning DECT 6.0 line-up for North American consumers. Sporting a beautifully thin, compact handset, the rz6031 DECT 6.0 system with caller ID will be the first cordless phone to incorporate the slim form factor currently seen in other electronics, such as portable music players, flat screen TVs and mobile phones. The rz6031 features a vibrant blue backlit keypad and LCD screen for easy viewing and a handset speakerphone for

DECT, which operates on the 1.9 GHz frequency, enhances call clarity and security, and enables users to talk anywhere in the home or office without wireless network interference. Because the frequency is not used by other wireless technologies, DECT technology easily integrates into homes using Internet and Wi-Fi services. VTech’s DECT offerings will be available in an array of affordable configurations, including a bundled two-handset rz6042 system with digital answering device and caller ID.

VTech’s 5.8 GHz models offer expanded features sets and a wider selection of bundles for 2007. The affordable and cool V MixTM gz5838, designed for the individual who wants to make a statement, offers interchangeable handset and base plates, and 33 different polyphonic musical ring tones.

In addition, VTech’s new expandable phone systems come with multiple handsets that require only a single phone jack, enabling users to place and receive calls from virtually any room in the home. The four-handset i6787 phone system with digital answering device offers an extra large

handset LCD display and blue backlit keypad. The base station’s unique 45-degree angle is also designed to offer ideal viewing. The competitively-priced i5878 phone system comes with three handsets and offers convenient features such as dual caller ID/call waiting, a 20-name and number phonebook and any-key answering.

VTech"s innovative product line will be on display at the 2007 Consumer Electronics Show in Las Vegas, January 8 – 11, 2007 in the Florentine Ballroom at Caesars Palace Hotel and Casino. The new VTech line-up, including the information-enabled ip8300 infoPhone and wf6972 Wi-Fi phone, unveiled in December 2006, can be purchased at major retail outlets and online at

VTech is one of the world’s largest suppliers of corded and cordless telephones and a leading supplier of electronic learning products. It also provides highly sought-after contract manufacturing services. Founded in 1976, the Group’s mission is to be the most cost-effective designer and manufacturer of innovative, high-quality consumer electronics products and to distribute them to markets worldwide in the most efficient manner.

Beaverton, Ore. – VTech Communications, Inc. (a wholly-owned subsidiary of VTech Holdings Ltd. SEHK: 303; London SE: VTH; ADR: VTKHY), one of the largest suppliers of corded and cordless phones in North America, today announced the ip8300 infoPhone™, an Internet-enabled cordless landline telephone that offers a convenient way to check e-mail, news, sports, weather and horoscopes, all without turning on a computer. The new ip8300 phone is also one of VTech’s first North American products to feature the Digital Enhanced Cordless Telecommunications (DECT) 6.0 technology, which delivers excellent sound quality, extended range and improved security.

In addition, VTech is rounding out its information-enabled product line-up with the wf6972 Wi-Fi landline phone that uses 802.11 wireless technology to connect to a computer via wireless router for direct-to-handset content delivery, along with standard voice communication. Combined with the infoPhone, VTech"s new information line is transforming the functionality of cordless landline handsets with the latest technology for Internet and wireless content delivery.

“Our new ip8300 infoPhone integrates real-time Internet-based information into a sleek, innovative cordless handset that enables users to chat on instant messenger, access and send e-mail and check weather,” said Matt Ramage, vice president of product management, VTech Communications, Inc. “The convenience of having instant information updates anywhere in the home eliminates the need to be tethered to a computer.”

The new ip8300 infoPhone uses the Internet to access information directly on the cordless handset’s color LCD screen, including news headlines, weather reports, horoscopes, local directory search and more. The infoPhone has a dedicated key for one-touch access to personalized, valuable information – sports fans can see the latest scores for their favorite team and busy parents can easily check the local weather before dressing the kids for school. The ip8300 bypasses the need for a computer to get these updates since it is connected to the Internet via a dedicated connection in the phone system"s base station.

Email users can stay in touch with friends and family using the infoPhone"s ability to send and receive both e-mails and instant messages directly from their cordless handset without relying on a computer. Using the innovative features on the ip8300, users can sign-in to their accounts for quick access to e-mail communications, instant messages and buddy list updates

VTech has partnered with Casabi to provide an easy-to-use network-based interface for access to Internet information and services from the phone. Casabi also provides an online web portal that enables users to choose and organize the information to be sent to the handset. The Casabi portal also can be used to personalize the phone with ring tones and wallpapers for each member of the family. Upon login on the infoPhone, the user’s preferences are automatically updated on the handset.

“Casabi’s software enables VTech to bring consumers real-time content and services directly to the cordless handset in an easy-to-use intuitive interface,” said Dave Weinstein, vice president of marketing and business development at Casabi. “VTech’s track record in design and innovation made the company the perfect partner for the technology.”

VTech’s wf6972 802.11 Wi-Fi phone system comes with software that allows the handset to receive information wirelessly from the PC. Using 802.11 technology, users can wirelessly access news headlines, sports scores and weather updates directly on the cordless handset in addition to standard landline capabilities.

The new VTech information-enabled phones will be on display at the 2007 Consumer Electronics Show in Las Vegas, January 8 – 11, 2007 in the Florentine Ballroom at Caesars Palace Hotel and Casino. The new VTech phones can be purchased at major retail outlets and online at www.vtechphones.com in Spring 2007.

VTech is one of the world’s largest suppliers of corded and cordless telephones and a leading supplier of electronic learning products. It also provides highly sought-after contract manufacturing services. Founded in 1976, the Group’s mission is to be the most cost-effective designer and manufacturer of innovative, high-quality consumer electronics products and to distribute them to markets worldwide in the most efficient manner.

Following our quality control review process, VTech discovered a potential battery reliability issue in a limited number of monitoring products. Models potentially impacted are VM981 and VM991. Affected units were manufactured between September 2017 and January 2018 and fall within a defined serial number range. As part of our proactive efforts, VTech will offer consumers a replacement monitor (parent unit) at no cost.

The issue is linked to a component within the battery that may cause it to expand or “swell” resulting in the parent unit chassis to bulge or the display screen to crack. We do not believe this is a safety issue. Please do not attempt to disassemble the monitor, as the battery is not consumer replaceable.

Consumers who notice the foregoing symptoms of a swollen battery or would like us to check to see if their monitor is included in the potential range of impacted products, should contact VTech Customer support directly at 1-800-595-9511.

ErisStation SIP Conference Phone with Four Wireless Microphones Support for up to 3 SIP lines/accounts Central, full-duplex speakerphone in base SIP codecs G.711 a/u, G.722, G.726, G.729 Up to 8...

Take conference phone calls to the next level with ErisStation, a business conference system featuring four wireless mics and interference-free soundThis innovative conference phone lets...

Why partner with VTech and Snom to outfit your entire property"s communication system? Scott Youngblood, General Manager at Embassy Suites of Portland, OR lays it out plain and simple: VTech is "far and away, the best we"ve ever worked with."

Part customer testimonial, part product introduction! Meet our new 15 Series Antibacterial Guest Room Phones. VTech incorporated what we were hearing in the marketplace into our new innovative series - the need for modern styling, smaller footprints, antibacterial plastic and affordable price points.

The M100 is designed for departments that require mobility and rapid installation, like hotel restaurants, bars, pool or concierge. From wireless, easy-to-use multi-line systems to ruggedized personal handsets, you can customize the communication solution that fits your mobility needs. Snom business phones are backed by 3-year industry leading warranties, North American-based support and some great partners!

VTech Hospitality goes above and beyond for our partners. Delivering high quality, innovative guest room phones and communication solutions for the entire property. Whether it"s mobile staff, conferencing or administrative services, VTech and Snom are there to power enhanced and efficient communication. Watch the video to learn more.

The C620 Wireless SIP Conference Phone enables a completely wireless conferencing experience. With DECT 6.0 Technology connecting the speakerphone and two detachable microphones, users can spread out and still be heard without shouting across the table. Perfect for hotel conference centers, training rooms or operational staff. Watch the C620 in action and contact infoUSA@snom.com to learn more.

The only phone manufacturer who can outfit your entire property. Hear first hand from our partner, Scott Younglood, General Manager at Embassy Suites Portland, why his team chose to partner with VTech and Snom for a powerful communication solution. The Snom D7xx Series provides a customizable, high definition audio experience for every level user.

The timeless, modern design of the Snom D785, combined with a large high-resolution color display is perfect for any working day. The newly designed user interface and second screen make using this telephone more intuitive than ever.

The Snom D735 hits the right notes thanks to its timeless design and the two modern color variants - this telephone is on the cutting edge, both technically and in terms of appearance.

As one of the primary touch points between a hotel"s guests and its services, the guest room phone can truly impact the guest experience and the hotel"s brand value. From hands-free mobility and compact footprints to guest safety and lower installation costs, VTech cordless hotel phones keep everyone better connected.

Form and function come together in VTech SIP hotel phones—a palette designed to meet the needs of everyone from management and maintenance staff to the most demanding road warriors. Learn how these phones are helping the world"s leading hotels deliver service continuity, control costs and make administration easy.

From the guest room to the lobby, VTech corded and cordless phones are upgrading the guest experience in hotels around the world. That"s thanks to innovative design and engineering, world-class service and support, and a commitment to the greenest standards. Meet the company that"s changing the future of hotel phones.

For more than 35 years, VTech has designed and delivered market-leading cordless phones. Learn how we"ve leveraged that expertise to innovate a comprehensive palette of contemporary and classic hotel phones. David Waterman, VTech"s design director, will walk you through the strategy and behind-the-scenes details that go into building VTech hotel phones.

The D717 SIP Color Deskset features an intuitive design with advanced technology and connectivity. Three self-labeling programmable feature keys sit next to a 2.8-inch, 320 x 240 pixel color LCD display. Opus codec support gives you the freedom to enjoy crystal-clear audio or high-quality narrowband audio, depending on your network conditions. Zero touch provisioning eliminates the need for manual labor typically involved with installation. Power over Ethernet (PoE) support and dual Ethernet ports makes the system cost-effective and easy to use. The USB port allows additional connectivity, including up to three D7 expansion modules for increased visibility and one-button options. The system features multiple configurations, including three programmable feature keys, four soft keys and 14 dedicated feature keys. You"ll feel safe with powerful security features like VPN support.

Free yourself from conference room wires, and help your team collaborate better. The Snom C620 wireless conference phone uses DECT 6.0 technology for a completely wireless.

Whether you run a small business from a home office, or collaborate in a large conference room, the Snom C520 SIP conference phone uses Bluetooth® and DECT 6.0 technology for frustration-free calls and meetings.

The analog-based telephone still has its place, both in our homes and at workplaces. Home-based broadband connections cannot function without a landline and for businesses, having a telephone number that ties with your geographical location is important.

Having a cordless phone gives the flexibility of being mobile. You know you need a reliable cordless phone for home or the office, but which one is best for your needs?

Cordless home phones today can do everything, it seems. From taking calls using Bluetooth technology to a hands-free conversation with headphone jacks, to working an answering machine when you are away, choosing the right phone requires considering how you plan to use it, and which features you really want to pay for.

If you are looking for the best cordless phone then make sure to get the AT&T CRL82312 Cordless Phone as this is this popular brand’s best phone to date.

I’d like to start the reviews of the best cordless phones to have for home and office use with the KX-TGB810S – a budget option and one of the best picks for families that want an affordable landline phone, with the majority of its features being as simple as they could be. Reliability and affordability are two of its strongest points, although I should mention that in my research, I’ve found hundreds of models that can boast about the same things.

The Panasonic KX-TGB810S is a basic, easy-to-use cordless phone. You won’t need to go through the hassle of a time-consuming installation process, as it’s so easy that little kids could probably do it.

Its sleek design makes it stand out from similarly-priced models aesthetically. Some of its most notable features include the line power mode, a remarkably long battery lifespan, three supported languages, and a variety of built-in functionalities, such as Speakerphone, Call Block, Phonebook, redial, speed dial buttons, and Caller ID.

In my research, I’ve struggled to find a landline phone as versatile as KX-TGB810S in this price range. Only a handful of budget options as cheap as KX-TGB810S could even begin to compare to it in the field of performance.

Most models that are worth comparing to the KX-TGB810S are either too bulky or equipped with even simpler features. In my opinion, the fact that this home phone comes equipped with both speed dial buttons and call block list functions atop Caller ID is an advantage in itself, making it a great choice for small companies and people with extremely low budgets.

For slightly more than its base model, the Vtech CS6719-2 cordless phone comes with improved benefits and advantages, such as an additional cordless handset for families and home offices, offering benefits of convenience and long-distance coverage on top of the simplified installation process.

As with the base CS6719 model, this cordless phone system can be expanded to up to 5 headsets with CS6709. It also features the same DECT 6.0 technology for superior voice quality. With full-duplex handset speakerphone, you can increase call participation. Both sides of the conversation can speak and be heard without canceling each other out for a more true-to-life conversation.

The CS6719-2 is one of Vtech’s most popular cordless phone systems. With two headsets, you can have conference calls with an outside line and both headsets. The interference-free technology means other devices and networks in your home or office will not interrupt your crystal-clear calls, even when you’re surrounded by electronics.

One of the pros when it comes to the business features of this phone is two-line support. With the Vtech system, you can receive calls from two separate phone numbers with distinct ringers for each line so you know which is ringing. The clear conference calls without interference are also a major selling point with Vtech.

Although cheap, this model offers a variety of good features, great value for the money, and a set of decent features while DECT 6.0 tech is arguably one of its strongest benefits. It’s great for practically everyone, from work-at-home employees, to people working in large companies, and everyone in between. This phone offers superb value for the money and is something that would leave any customer happy.

The AT&T EL52213 is another Amazon’s Choice product. Although it’s on the verge of entering the next price range, it’s among the most versatile low-tier landline phones I’ve had the pleasure of reviewing. It’s easily one of the best picks considering its affordability, and offers an amazing bang for your buck.

One of the core features of this landline phone is the FDX (full-duplex) system. Basically, it enables both parties to enjoy crystal-clear communication; although this is what most buyers assume they would get with any phone, I’ve realized that plenty of budget landline phones operate on the HDX system (half-duplex).

Unlike Panasonic’s budget phones, AT&T EL52213 is powered by Li-Ion batteries, which offer improved battery capacity at the expense of slightly worse performance at low temperatures.

This is a 2-handset landline phone that is expandable up to five, making it perfectly suited for home offices. There are a few drawbacks I should point out, though. The main issue with AT&T EL52213 is that the phone goes to voicemail quite quickly. Additionally, it can only save 7-digit numbers, which excludes area codes.

Overall, AT&T EL52213 is a great pick if you don’t feel like spending too much but still want a good phone. It’s more versatile than most similarly-priced models.

Vtech is among the most popular landline phone manufacturers for good reasons, and the VS112-2 is a true representative of the brand’s quality. Gorgeous, practical, and outfitted with a host of highly advanced features, this cordless phone may be the upgrade you’ve been looking for.

One of the best features of Vtech VS112-2 that is making its first appearance in this guide is the function to filter robocalls and unwanted calls from telemarketers. Basically, you can customize the passphrase to prevent robocalls from annoying you while setting a requirement for all ’human’ callers that want to get in touch with you.

Another interesting feature is Bluetooth connectivity. You can connect your mobile phones and handsets, or one of each to your base and use them without ever having to worry about call reception or signal again.

I’m sure most people will agree when I say that a large, brightly lit display is a big plus for any landline phone, and that’s one of the key features of VS112-2. It’s slightly more advanced in comparison to models I’ve reviewed in this guide; most notably, its ID caller functionality shows up to 10-digit numbers, which includes area codes as well.

The speakerphone, as well as a visual ringer, and a cutting-edge charging phone base are some of the best features of this phone. Speaking of which, the base is outfitted with a message counter, as well as LED indicators, showing which Bluetooth device is currently operational.

There are quite a few similarities between Panasonic’s KX-TGB810S and KX-TGD532W, starting with the design, caller ID, a convenient Phonebook feature, as well as the buttons, just to mention some of the most notable ones.

However, I wouldn’t recommend a phone that looks and does the same job as its more affordable sibling. The differences between these two are even more pronounced, and I would be remiss if I didn’t say that KX-TGD532W is a huge upgrade to KX-TGB810S.

Over seven thousand Amazon users agree with me on this one; Panasonic KX-TGD532W is an excellent low-cost landline phone available in multiple color variations and equipped with a host of strong features, such as the one-touch call block list, bilingual caller ID, the quick read function, programmable ringtones, and more.

Hearing aid compatibility is one of the highlight features of Panasonic KX-TGD532W, and I would personally recommend it to anyone using T Coil aid products. It could be an excellent gift for your grandparents, even though it’s slightly pricier than a standard mid-tier landline phone.

Unlike cheaper phones, Panasonic’s KX-TGD532W features a talking caller ID functionality in two languages, enabling users to switch between English and Spanish.

Some of the pros about this landline phone I need to point out are its versatile base and its built-in functions. Aside from the regular phone charging function, the base also features a message counter and the locator button, which is exceptionally useful for households with children that have a tendency to hide various items while playing.

There were a couple of things I wasn’t too thrilled about, though. Namely, the display looks great, but it’s probably a bit too small for people with poor eyesight. Though it is an LCD screen, the panel is only 1.6-inch in size.

The bottom line is that KX-TGD532W is an excellent phone that boasts a well-rounded set of features, some of which are fairly rare in this price range.

The Panasonic Link2Cell Bluetooth Cordless Phone is the ultimate in cell to cordless technology. This system includes five handsets with a digital answering machine system and the ability to sync your smartphone to your cordless phone with Link2Cell Bluetooth technology. You can easily make and receive mobile phone calls through your Panasonic system with excellent clarity. This system allows you to sync up to two smartphones to add range and power to your office phone system.

This Panasonic cordless system includes Noise Reduction to clearly hear your calls, even with ambient noise. Avoid missed texts with talking ID alerts from your Link2Cell Panasonic handsets. With Talking Text Sender Alert, the phone will announce the name or number of the caller. Moreover, it can connect to Siri, Google Now and S Voice with the Voice Assistant feature and has up to 250 entries to the phone directory.

You can have up to 12 hours of talk time when the power goes out due to the battery backup. This phone system is not lacking in any features you may need, whether you want the ability to store a nearly endless number of contacts in your directory, block calls, or connect your mobile phones with a single press of a button.

In my opinion,thePanasonic Link2Cell Bluetooth Cordless Phone checks all the boxes when it comes to reliability, convenience, and performance. In most cases, these attributes are more important than technical specifications, at which Link2Cell Bluetooth Cordless Phone excels just as much. Although imperfect, it offers plenty of pros that far outweigh its shortcomings.

Looking for a reliable cordless system with enough handsets? The AT&T CRL82312 phone answering system is one of the best-rated three handset systems with over 4,500 reviews on Amazon, the majority of which are overwhelmingly positive. It sports an extra-large LCD display panel and extra-large backlight buttons for easy visibility.

This AT&T answering system is actually manufactured by Vtech and it includes DECT 6.0 cordless technology for crystal-clear call quality and better range without interference from nearby devices and electronics. The system works as a desktop phone or it can be mounted to a wall with the included bracket. Volume is completely adjustable and this model is compatible with hearing aids, allowing individuals with hearing issues to comfortably use it.

This phone is something that every family with children needs. I’d want to draw your attention to its extra-large display panel, the mute option, and the visual ringing indicator; these are all features that could help your family live more comfortably, and best of all – they’re so simple that everyone can use them.

Starting with the basics; equipped with three handsets and virtual multi-line operation technology, big, remarkably soft keys, and a large display on each handset, as well as the phone base station, it’s obvious that this model was designed with convenience in mind.

The VTech IS8251-3 offers a streamlined speed dial function, allowing you to not only reach selected contacts but also call contacts that have messaged you with the press of a button.

Although each handset boasts a fairly large display, the LCD screen on the base itself is 5 inches in diameter and provides superior visibility. It’s easier than ever to see who you are calling, who is calling or messaging you, or customize your multi-line system.

I was positively surprised by the versatility of the call history function of VTech’s IS8521-3. Given that its memory can store up to 40 minutes of message recordings, you won’t need to have trouble with clearing it as frequently.

The Vtech DS6421-3 system has been named as one of the best cordless home phones by Consumer Reports and with good reasons. It checks all the boxes in terms of superior versatility, features, and practicality while the only thing I wasn’t particularly thrilled about was its price tag.

This system uses advanced DECT 6.0 digital technology to improve range and voice quality with three included cordless handsets and a built-in digital answering machine. It combines landline and cell technology with the ability to connect to cell technology. With the Connect to Cell feature, you can receive and make cell calls from your Vtech handset without searching for your cell phone.

Even though its price tag can be slightly intimidating, AT&T’s TL88102BK is not just one of the best products on the list – it’s the ultimate landline phone for households, home offices, and businesses alike.

A ’good’ cordless phone is pretty much every third or fourth model on the market. You’ll see dozens of phones that are decently easy to install, sound quite great, and have interesting features, such as a blacklist of up to 200 calls or LED charging indicators.

However, only a handful of cordless phones are worth the buck, especially because the differences that set them apart from ’good’ cordless models aren’t too easy to discern.

Regardless of where you are in your household, you should be able to get a clear signal with any of the products I’ve recommended above. Their top-quality antennas and versatile modes of connection enable these phones to provide better sound quality than you’re probably accustomed to.

User-friendliness is, in other words, ease of use and ease of setup. Many companies and phone manufacturers are aware that not everyone is tech-savvy enough to install and use every single feature of their phones, and that’s precisely what this group of attributes refers to.

Cordless phones are, by default, more user-friendly than their corded counterparts, as you could freely walk around the house without being limited to the length of the cable. However, certain products require hours of draining setup. That’s why I made sure to pick the products that were either easy to install or come with instructions that were detailed and easy to follow.

For example, imagine if you bought a phone that could be used at any distance; its memory keys are soft, but poorly illuminated, and you want to call emergency services in nearly pitch-black light conditions. Even if the phone is equipped with dozens of cutting-edge features, it failed to serve one of its basic purposes.

That’s why we’ve picked the phones that are outfitted with a decently sized display and clearly visible keys – not just to make them usable in emergencies, but to cater to your comfort as well.

Millions of seniors struggle with hearing issues, which makes it hard for them to use regular phones.  In such cases, a person’s hearing problems would not only prevent them from using certain functions, but the phone’s volume could actually worsen their condition.

Essentially, these phones have special volume controls that are bound within certain amplification limits that won’t worsen the condition of hearing-impaired individuals using them; additionally, hearing aid compatible phones are tuned as such to be perfectly audible for people with hearing issues to hear the person on the other end of the line.

DECT stands for Digital Enhanced Cordless Telecommunications, and it’s the industry standard for cordless telephony. Designed to enable rapid roaming between different networks, DECT systems are comprised of multiple phones bound to a single base.

One of the first decisions to make is how many handsets you need. Cordless phones can have up to six handsets, which allows you to place the phone in more than one room. This really comes in handy if you have a big home.

Some of the most popular cordless phone features include a speakerphone, caller ID, an LCD screen on handsets and/or bases to display important information, a headset jack to allow you to chat while you move about the room or look through paperwork for a hands-free conversation, and a two-line support for receiving calls for two phone numbers on the same phone. Some phones give two distinct ringers to let you know which line is ringing. This feature is very handy if you’re conferencing with two callers in a three-way conversation.

Another excellent feature that you can find in a cordless phone is auto talk. This feature means your call connects as soon as you lift the handset from the base. Also, there’s the battery backup that enables your phone to keep working if you lose power. We won’t mention an answering machine because all of the phones come with an integrated one.

That’s a wrap guys! I’ve included the best cordless phones to have for home and office. The right choice for you will depend on your personal use case and budget.

A cordless telephone or portable telephone has a portable telephone handset that connects by radio to a base station connected to the public telephone network. The operational range is limited, usually to the same building or within some short distance from the base station.

A cordless telephone differs functionally from a mobile telephone in its limited range and by depending the base station on the subscriber premises. Current cordless telephone standards, such as PHS and DECT, have blurred the once clear-cut line between cordless and mobile telephones by implementing cell handoff (handover); various advanced features, such as data-transfer; and even, on a limited scale, international roaming. In specialized models, a commercial mobile network operator may maintain base stations and users subscribe to the service.

Unlike a corded telephone, a cordless telephone needs mains electricity (to power the base station). The cordless handset contains a rechargeable battery, which the base station re-charges when the handset rests in its cradle.

Radio telephony (telephony without wires) predated cordless phones by at least two decades. The first, MTS, or Mobile Telephone Service went into service in 1946. Because the range was intended to cover the widest possible service area, capacity was extremely low, and the early tube technology made equipment rather large and heavy. The second generation radio telephone, or IMTS, or Improved Mobile Telephone Service became active in 1964.

Beginning in 1963, a small team of Bell Laboratories engineers were tasked with developing a practical and fully functional duplex wireless telephone. The team included (in alphabetic order): S.M. Baer, G.C. Balzer, J.M. Brown, W.F. Clemency, M. Rosenthal, and W. Zinsmeister, under the direction of W.D. Goodale, Jr.

By 1964, breadboard models were working in the lab. During 1964-65 these were refined and packaged to test around the Bell Labs Holmdel N.J. facilities. The system operated under an experimental license on crystal controlled channels in the 35 and 43 MHz bands using FM, a low power transmitter and a sensitive superhet receiver. Full supervision of all telephone functions, including on-off hook and dialing was provided via an out of band tone supervision system. The model developed for home use was designed to look like a standard (although bulky) telephone handset. The base station was a small box connected to a standard telephone network. About 50 units were built in a Western Electric model shop in Andover Mass. for field trials in two Bell System locations in the Boston and Phoenix area. The overall project was described in the Bell Laboratories Record, Volume 45 (1967).

Sweigert was an active proponent for directly coupling consumer electronics to the AT&T-owned telephone lines in the late 1960s. The telephone companies at the time did not permit third-party equipment to be connected to their lines; most telephones were made by Western Electric and leased to the customer by AT&T. The Carterfone coupler, a crude device for interconnecting a two-way radio with the telephone, led to the reversal of the Federal Communications Commission ban on direct coupling of consumer equipment to phone lines (known as the landmark Carterfone decision) on June 26, 1968. The original cordless phones, like the Carterfone, were acoustically (not electrically) connected to the public telephone network.

In 1994, digital cordless phones in the 900 MHz frequency range became available to consumers. These new types of phones provided better audio quality because it could filter out interference and its signals could penetrate walls more easily. Digital signals allowed the phones to be more secure and decreased eavesdropping; it was relatively easy to eavesdrop on analog cordless phone conversations.spread spectrum (DSS) was introduced for cordless phones. This technology enabled the spreading of the digital voice transmission over multiple frequencies, improving privacy and reducing interference between different subscribers.

In the United States, seven frequency bands have been allocated by the Federal Communications Commission for uses that include cordless phones. These are:

Over-crowding of earlier frequency allocations led users to discontinue using telephone equipment that operated on those frequencies, leaving those bands relatively clear. Radio hobbyists monitor usage of the older equipment with telephone activity in the US AM broadcast band, some 27 MHz frequencies and most older 43-50 MHz frequencies.

1.7 MHz cordless phones were the earliest models available at retailers, and are generally identifiable by their large metal telescoping antennas. Channels just above the AM broadcast band were selected manually by the user. Some of the frequencies used are now part of the expanded AM radio band, and can be heard by anyone with an AM radio. There are reports of people still using these phones, and using them as makeshift AM radio stations that can be heard for a couple of city blocks.

43–50 MHz cordless phones had a large installed base by the early 1990s, and featured shorter flexible antennas and automatic channel selection. Due to their popularity, an overcrowding of the band led to an allocation of additional frequencies; thus manufacturers were able to sell models with 25 channels instead of just 10 channels. Although less susceptible to interference than previous AM units, these models are no longer in production and are considered obsolete because their frequencies are easily heard on practically any radio scanner. Advanced models began to use voice inversion as a basic form of scrambling to help limit unauthorized eavesdropping.baby monitors.

900 MHz cordless phones are rarely sold but have a huge installed base. Features include even shorter antennas, up to 30 auto selecting channels, and higher resistance to interference. Available in several varieties; analog, analog spread spectrum (100 kHz bandwidth), digital, and digital spread spectrum, most being sold today are low-cost analog models, which are still susceptible to eavesdropping. Digital variants can still be scanned, but are received as a digital hiss and therefore are difficult to eavesdrop upon. Digital transmission is immune to static interference but can experience signal fade (brief silence) as the phone goes out of range of the base. Newer Digital Spread Spectrum (DSS) variants spread their signal over a range of frequencies, providing more resistance to signal fade. This technology enabled the digital information to spread in pieces among several frequencies between the receiver and the base, thereby making it almost impossible to eavesdrop on the cordless conversation. The FCC only allows DSS model phones to transmit at the full power of 1 watt, which allows increased range over older analog and digital models.

Virtually all new cordless phones sold in the US use DECT 6.0 on the 1.9 GHz band, though legacy phones can remain in use on the older 900 MHz, 2.4 GHz and 5.8 GHz bands. There is no specific requirement for any particular transmission mode on the older bands, but in practice many legacy phones also have digital features such as DSSS and FHSS.

Some cordless phones formerly advertised as 5.8 GHz actually transmit from base to phone on 5.8 GHz and transmit from phone to base on 2.4 GHz or 900 MHz, to conserve battery life.

The 1.9 GHz band is used by the DECT 6.0 phone standard and is considered more secure than the other shared frequencies. The vast majority of new cordless phone devices sold in North America, whether connected by landline or to mobile phones (usually via Bluetooth), now use DECT 6.0. However, DECT 6.0"s late start compared to DECT elsewhere has led to a large installed base of legacy cordless phones using other frequencies, many of which remain in use today despite increasingly common interference with the ever growing use of Wi-Fi, Bluetooth and other unlicensed digital radio standards, especially at 2.4 GHz and 5.8 GHz.

In Europe, the 1.9 GHz (1880–1900 MHz) band was set aside for the DECT phone standard from its inception. DECT, on its European band & related frequencies, has largely displaced all other cordless phone standards worldwide except for North America.

Many cordless phones in the early 21st century are digital. Digital technology has helped provide clear sound and limit casual eavesdropping. Many cordless phones have one main base station and can add up to three or four additional bases. This allows for multiple voice channels that allow three-way conference calls between the bases. This technology also allows multiple handsets to be used at the same time, and up to two handsets can have separate conversations with outside parties.

"Plain old telephone service" (POTS) landlines are designed to transfer audio with a quality that is just adequate for the parties to understand each other. Typical bandwidth is 3.6 kHz; only a fraction of the frequencies that humans can hear, but enough to make the voice intelligible. No phone handset can improve on this quality, as it is a limitation of the phone system itself. Higher-quality phones can transfer this signal to the handset with less interference over a greater range, however. Most cordless telephones, no matter what frequency band or transmission method is used, will hardly ever exactly match the sound quality of a high-quality wired telephone attached to a good telephone line. This limitation is caused by a number of issues, including the following:

However, the higher frequency often brings advantages. The 900 MHz and 2.4 GHz band are increasingly being used for a host of other devices, including baby monitor, microwave oven, Bluetooth, and wireless LAN; thus, it is likely that a cordless phone will suffer interference from signals broadcast by those devices, and also may itself generate interference. It is also possible for a cordless phone to interfere with the 802.11a wireless standard, as the 802.11a standard can be configured to operate in the 5.8 GHz range. However, this can easily be fixed by reconfiguring the wireless LAN device to work in the 5.180 GHz to 5.320 GHz band.

The newer 1.9 GHz band is reserved for use by phones that use the DECT standard, which should avoid interference issues that are increasingly being seen in the unlicensed 900 MHz, 2.4 GHz, and 5.8 GHz bands.

Many analog phone signals are easily picked up by radio scanners, allowing anyone within range to listen in on conversations (though this is illegal in many countries). Though many such analog models are still produced, modern digital technology is available to reduce the risk of eavesdropping. Digital Spread Spectrum (DSS) typically uses frequency hopping to spread the audio signal (with a 3 kHz bandwidth) over a much wider range of frequencies in a pseudorandom way. Spreading the signal out over a wider bandwidth is a form of redundancy, and increases the signal-to-noise ratio, yielding longer range and less susceptibility to interference. Higher frequency bands provide more room for these wide-bandwidth signals.

Roaming cordless phone handsets exist which are not tethered to any particular base station, but which also do not use traditional mobile (cellular) phone networks. These most commonly use digital technologies like DECT, 2.4 GHz unlicensed spectrum, or 802.11a/b/g standards-based wireless LAN technology. The cordless phone handset must connect to a wireless access point or base station that supports the same technology. Also required is a call management function and a gateway to the public switched telephone network (PSTN). This may or may not be integrated in the base-station. A Voice over IP service can be used by phones that use wireless data access points, thus using a broadband Internet connection to defer the connection to the PSTN to a remote gateway operated by the service provider, close to the call"s destination. Analog equivalents do exist and can provide longer reach, but with potential loss of confidentiality and voice quality. Most digital systems have inherent encryption or offer optional encryption.

Unlike wired telephones that are powered from the telephone company"s central station batteries, a cordless phone base station required electrical power to operate. During a power interruption, the cordless base station will not be operable, while wired sets may continue to operate.

New ErisTerminal ET685/ET635 SIP Color Desksets and ErisTerminal ET6 Expansion Module Incorporate Color LCD Screens and World-class Audio Powered by Snom Technology

BEAVERTON, Ore., June 12, 2018 – Today, VTech Communications, Inc. a global leader and manufacturer of SIP-based VoIP phones, introduced two new desksets and an expansion module to its award-winning ErisTerminal® product family: the ErisTerminal ET685 SIP Color Deskset, the ErisTerminal ET635 SIP Color Deskset, and the ErisTerminal ET6 Expansion Module. Cost-effective and easy to use, the new ET600 Series provides busy professionals with the necessary tools to better manage phone-based communications. Business users can easily place and receive calls; customize phone settings; manage and transfer calls; field calls handsfree; quickly add hardware; and update lines.

“The new ET600 Series incorporates a host of new features aimed at helping users manage calls quickly and efficiently,” said Chad Collins, vice president of sales, Americas, VTech Communications, Inc. “Color LCD screens and dedicated feature keys enable convenient call handling, while zero touch provisioning allows for easy installation. Additionally, audio quality for the ET600 is unparalleled thanks to the integration of world-renown Snom® audio and software.”

The ET685 color deskset is the ideal deskset system for users who manage and delegate calls on a daily basis. Featuring a 4.3-inch color LCD display that portrays 10 clear lines of information, the ET685 makes it easy for employees to handle multiple calls simultaneously and can support up to 12 SIP lines or accounts from a single setup. Six programmable feature keys, four soft keys, and 16 dedicated feature keys provide users with the ability to manage calls quickly. A second LCD screen provides access to four pages of six self-labeling feature keys with multi-color LEDs. Users can easily create custom keys for shared call appearances (SCA), busy lamp fields (BLF), speed dials, and feature codes.

The ET635 color deskset is designed with many of the same features as the ET685, while incorporating eight self-labeling programmable feature keys that surround a 2.8-inch color LCD display. The system features multiple configurations in addition to the self-labeling programmable feature keys, such as four soft keys and 15 dedicated feature keys. An integrated proximity sensor allows the display to dynamically change the key labels when your reaches for the phone.

The ET6 Expansion Module increases the functionality for the ET685 and ET635 desksets by providing additional programmable function keys. Each ET6 offers 18 multi-color LED programmable keys beside a large 4.3-inch graphic LCD display. These buttons can easily be programmed to add features, including call parking, pickup, transfer, call forward, and speed dials. Whether in a large or small office, business users can handle calls quickly and efficiently by pairing up to three expansion modules per phone when using the USB ports in both the ET685 and ET635.

For businesses interested in an affordable entry level solution that delivers many of the same capabilities, the VTech ET605 SIP deskset features two programmable keys, two SIP account support, and a monochrome LCD display. An additional deskset, the ET617, will soon be available in the second half of 2018, featuring four programmable keys, four SIP account support, GigE, and a 2.8-inch color LCD display.