Wireless technologies are becoming more and more relevant every day not only for offices, but also for residential buildings and apartments. After all, they allow you to make the user more mobile, increase the comfort of his communication during working or non-working hours.

WiFi phone turns a classic telephone into a convenient, compact and mobile device, which you can easily take with you to another room, bathroom or kitchen, even go out to the playground or to the entrance.

Benefits of WiFi Phones

A WiFi phone is especially convenient for a private house with a large area of ​​​​living space. The use of WiFi data transmission technology makes it possible to provide a high-quality signal to all territories without interruptions and interruptions in communication, as may be the case with a conventional radiotelephone.

A WiFi phone is indispensable for offices of large and medium-sized companies, where a lot of computer and other equipment is installed, and therefore extra wires cause great inconvenience. In addition, a WiFi phone is practical for the employee himself, as it allows him to communicate with clients or partners, moving freely around the office.

It should be noted that the WiFi phone is easy to install and does not require additional communications - communication and operation is carried out wirelessly. This significantly reduces the cost of installation and operation, and also allows you to mount such phones in rooms where there is no wired local area network.

Almost every WiFi phone also supports a standard wired connection, and therefore, if necessary, can be used in this way. Many devices are equipped with a dozen additional features - support for multiple lines, the ability to work in networks with different communication standards, control, forwarding and holding calls, etc.

WiFi phone in store website

If you need a modern WiFi phone, you can easily find a suitable model in our online store. The range includes devices from the world's leading manufacturers, in a different price range. Therefore, no matter what is your priority - financial benefit or functionality, you can always choose a model in accordance with your requirements and capabilities.

In addition, our experts will help you choose not only a WiFi phone, but also accessories for it.

IP telephone and VoIP telephony

What is an IP phone? This is a telephone set that uses VoIP technology and the IP digital network for voice transmission. Therefore, these devices are also often referred to as VoIP phones or sip phones(named after the most common connection protocol). In the modern world, the Internet penetrates into all spheres of our life, greatly simplifying and reducing the cost of all processes of information transfer. Ordinary traditional telephone communication is no exception and fades into the background. She is being pushed out more and more IP telephony for office and home, using technology VoIP (V oice- o ver- IP). This is a new generation technology that uses the Internet to transmit voice instead of the usual wired line. The data is sent over the Internet rather than traditional telephone wires, which guarantees high quality communications. And, thanks to this, calling to another continent is as simple as calling to a neighboring house, and it is not at all expensive. The use of VoIP gateways allows you to connect analog and digital networks, so IP telephony users can talk with subscribers not only of IP PBXs, but also of any analog PBXs. To conduct conversations using IP telephony, you can use both IP phones and software softphones installed on computers. The latter, strictly speaking, are not IP phones, since when the computer is turned off, softphones can no longer make or receive a call.

Advantages of IP telephony

In addition to the usual functions of traditional telephone connection (Speakerphone, function buttons and speed dial keys), IP telephony has much wider possibilities:

• low rates ip telephony to commit long distance and international calls;
• independence from location, IP the phone can work from anywhere in the world;
• adding new phone numbers within an existing connection;
• caller presence indication(modes "out of office", "do not disturb");
• comfortable and flexible setting various options forwarding;
• voice mail with indication of received messages;
• redirect- call transfer no answer to the call;
• secure calls from signal encryption;
• sending and getting text messages;
• conferences.

However, it should be taken into account that these functions can be used in full only when building the entire corporate network based on the equipment of the same manufacturer, since different vendors implement additional features in different ways.

IP phone features

IP phones in integration with a mini PBX provide the user with a number of useful features. Here are the most requested ones:

• Answering machine
• Call transfer
• Call Waiting
• Call forwarding
• Programmable Buttons
• Phone book
• Multilateral Conference
• Speed ​​Dial
• Do not disturb mode
• Call Hold

Let's take a closer look at what these functions provide:

• Answering machine. Issuance to the caller voice message and the ability to record voice messages from him.
• Call transfer. The ability to transfer an incoming call to another internal telephone number, to a landline number or to a mobile subscriber.
• Call waiting. If an internal subscriber makes a call, but at the same time a call is received, then caller will hear short beeps, but if the called subscriber has a call waiting service, then the calling subscriber will hear long beeps as if the called number was free. In this case, the called subscriber can put his call on hold and switch to the incoming call, and then continue the first conversation.
• Call forwarding. The function of redirecting an incoming call to another extension. There are several redirect options.
  • Unconditional redirect. All calls are sent to the specified number anyway.
  • Divert on busy signal. If this subscriber is busy, the call is forwarded to a pre-programmed number.
  • Redirects on no response. Calls are redirected if the subscriber does not answer within the specified time.
• Programmable buttons. These buttons allow you to program frequently used functions for quick access. For example, entering the menu, entering the address book, transfer, speed dialing and others.
• Phone book. Local and remote phonebooks allow you to save and edit subscribers' phone numbers with their names or other identifying information.
• Multilateral conference. Depending on the models of ip phone and mini PBX, this function allows you to combine three or more subscribers, both internal and external, into one conversation.
• Speed ​​Dial. The ability to dial a number from the phone's memory by pressing function button programmed for this task, with one touch.
• Do not disturb mode. In this mode, no calls come to the IP phone, and the subscriber calling to it receives a DND (Do Not Disturb) tone.
• Call hold. When you receive a call during a conversation, you can put the current conversation on hold and answer the second call. In this case, the conversational part of the ip phone switches to the second subscriber, but the connection with the first subscriber is not interrupted, and it will be possible to return to the first conversation.

SIP phone selection options

To choose the right SIP phone, let's first determine what parameters they differ in and what these parameters affect:

• Number of lines;
• Number of SIP accounts;
• Availability of the display and its parameters;
• Interfaces connections:
• Number of Ethernet ports;
• Support for various protocols connection establishment ;
• Support network protocols;
• Possibility wireless work;
• The presence of a connector to connect headsets;
• Food methods.

Specifications of SIP Phones

To technical specifications sip phones include:

• Number of lines. This is the number of simultaneous telephone conversations. In wireless IP Dect phones, it is possible to simultaneously conduct conversations from different radio handsets through one base. In fixed IP phones, if there are two or more lines, it is possible to put the conversation on hold and accept the call on another line. The number of simultaneously supported conversations is especially relevant for SIP DECT phones, when each DECT wireless handset has its own SIP number.
• Number of different SIP accounts(accounts). The account is registered with the SIP provider and contains two parts (like e-mail): first, the login itself, and then, after the @ sign, the server address. Several SIP accounts - this is the ability to work with several providers, which makes it possible to reduce communication costs in certain directions. As a rule, each account SIP matches your phone number.
• Display options: color/monochrome, size, resolution, display languages. The necessary screen properties are determined by the tasks that a particular telephone set must solve. To call several pre-programmed numbers, it is enough to have a single-color display with a low resolution, or even a phone without a display.
• Interfaces connection to local network: Ethernet, WiFi, Bluetooth. Fixed ip phones and ip dect phone bases are connected via a wired Ethernet interface using an RJ45 connector. Wireless ip phones - via Wi-Fi, BlueTooth protocols.
• Number of Ethernet ports. There can be two or one of these ports. If there are two Ethernet connectors in the device, it can itself serve as a router for connecting through it to the local network personal computer. Or, conversely, with a computer already connected to the network, no additional switch is required. The RJ45 connector is removed from the computer and included in the device, and from it the wire with two RJ45 connectors is included in the computer.
• Support for connection establishment protocols VoIP: SIP, SIP v2, H.323, MGCP, etc. It is most likely that you will need an IP phone with SIP support, since this is the most common protocol at the moment. However, this point needs to be clarified, because your voip telephony service provider or PBX may work with another protocol such as H.323.
• Support for network protocols: TCP / IP, DHCP, NAT, HTTP, HTTPS, FTP, etc. Support for certain protocols is needed to implement the corresponding capabilities of IP telephony. For example, TCP/IP provides packet data transmission over the Internet; DHCP needed for automatic distribution of IP addresses to phones; NAT- to work with routers; FTP- for transferring files; HTTP- to obtain information from WEB-sites, for example, weather forecast; HTTPS is HTTP with data encryption;
• Possibility of wireless operation. IP phones can support the DECT protocol, in this case the base is connected to the local network via the Ethernet port, and the DECT handsets communicate with the base via a wireless protocol. It is also possible to connect the phones themselves to the local network via Wi-Fi and Bluetooth protocols.
• Availability of a headset jack. This option allows you to use an ip phone with a headset, which provides not only improved sound quality, but also increases the efficiency of employees through the use of hands and the ability to do certain work during a call.
• Nutrition: local from network adapter or remotely over an Ethernet network using PoE (Power-over-Ethernet) technology. The possibility of power over Ethernet (PoE) eliminates the need for each IP device to have its own power adapter and 220 V socket for it.

IP phone manufacturers

Due to the widespread use of ip telephony, the telecommunications market VoIP equipment there is a wide variety of ip phones. The best now are the devices of the following manufacturers:

• Cisco
• Avaya

If Cisco and Avaya products are more designed for corporate use in large and medium-sized businesses, then Panasonic, Yealink, Gigaset and Grandstream produce, among other things, budget models that are perfect for small businesses or for the home.

USB SIP phones and ip devices connected via Ethernet

In order to make calls using an IP phone, it must be connected to the Internet. This can be done via usb port computer or Ethernet LAN connector. A USB phone is a device that connects to a computer with softphone software installed on it, such as Skype, Viber, Net2Phone, etc., and replaces the headphones and microphone. This is convenient for voice communication between users of computer networks. If the device supports the sip protocol, then such a usb sip phone can be used to make calls using sip telephony, which will be discussed below. A USB phone is not capable of making and receiving calls on its own without a computer, and, in principle, with a headset, it can be completely replaced by software.

An IP phone connected to a local network via an Ethernet connector is a fully functional device that can make calls and receive calls via the ip network on its own, without a computer. Such a device externally looks the same as a conventional wired analog one. It supports all the functions of the usual telephony, as well as additional features of IP telephony. The device can have two Ethernet ports and, in this case, also serve as a router for connecting a computer.

IP phone with 2 Ethernet ports - Grandstream GXP-1620:

Wired and wireless IP phone

Wireless IP phone Gigaset A510 IP:

SIP protocol support

One of important parameters phone ip is SIP protocol support, which is currently the main VoIP telephony protocol. What is this protocol - SIP?

In order to start and end an IP telephone session, you need a certain standard, which is the H.323, MGCP, SIP protocols. Wide application voip-telephony began with the approval of the recommendations of the Session Initiation Protocol, in translation - "session establishment protocol". The SIP protocol was at the heart of Voice-over-IP. In addition to IP telephony, the sip protocol also includes the exchange of multimedia data: audio and video conferencing, instant messaging, online games. The protocol describes how an endpoint can request the start of a connection from another client on the same network, but possibly far away, using its unique sip account. SIP defines the way in which subscribers agree to open data channels based on other protocols, which will then be used to transfer information.

Benefits of SIP:

• Mobility sip telephony subscribers is very high, you can travel around the world while maintaining your sip number;
• Maximum expandability and compatibility with older versions;
• Compound happens to the maximum quickly;
• Friendly addressing, like e-mail;
• Simple open protocol;
• Traffic saving the Internet.

Currently, it is the SIP protocol that is the most common, and devices that support it are called SIP phones. For some manufacturers, even the model name itself contains the abbreviation SIP.

SIP phone Yealink SIP-T21 E2:

IP phone with headset

IP phone with headset - Panasonic KX-HDV130RU:

PoE technology for ip phones

Power Technology P over- o ver- E turnnet (PoE) transmits power to ip phones over a local area network over Ethernet. Models with PoE support do not require a power supply and a separate 220V outlet to connect the adapter. Most IP devices have this capability. However, you should understand that if you connect additional devices to the machine, for example, the console of additional speed dial buttons, the power from the local network will not be enough and you will need to connect an adapter.

Ethernet line powered IP telephone - Yealink SIP-T21P E2:

Manufacturers and brands of IP phones

The best manufacturers of budget ip phones with their advantages are described below. We hope that the recommendations below will help you make the best choice of IP phone.

Panasonic IP Phones

The advantages of the products of the Japanese company Panasonic are:

• High sound quality;
• Reliability;
• Usability all major functions VoIP SIP telephony even in the budget segment.

Panasonic IP phones can be divided into two groups:

1. Wireless, convenient for mobile use within the enterprise or at home
2. Stationary, for office and home

Panasonic KX-TGP500 and KX-TGP600 are wireless VoIP DECT solutions. TGP600 is a further development of the "500" model. With a price difference of less than 10%, the "six hundredth" has a number of advantages:

• number of connected cordless handsets - 8 (instead of 6)
• number of simultaneous calls - 8 (versus 6)
• increased talk time on dect handset up to 11 hours (for TGP500 up to 5 hours)
• color display (not single color)
• the ability to connect a stationary DECT phone Panasonic KX-TPA65
• use of Panasonic KX-A406CE DECT repeaters to increase the range

It should be noted that the KX-TGP600 can work with eight sip accounts and have eight simultaneous calls, while other manufacturers usually have the second parameter less than the first, and it may turn out that when you try to make a call, all lines are busy. When choosing a wireless IP device, based on the price / quality ratio and functionality, the recommended model is Panasonic KX-TGP600. You can pick up a headset for this model.

Photo of the radiotelephone Panasonic KX-TGP-600 with SIP support.

Panasonic KX-HDV100RUB and KX-HDV130RUB- new models from Panasonic, but already received good feedback buyers. Panasonic did the seemingly impossible: it created full-featured high-quality devices for such a low price. These models work well with both conventional hardware IP PBXs and Asterisk software IP PBXs, and can also be used by IP operators, thanks to Broadsoft DMS (Broadsoft Device Management System) certification. And to get the maximum sound quality provided by HD Sonic technology, we recommend using these devices with a specialized headset Accutone TB7RJ-AKR-U10PS, designed specifically for the HDV series.

Budget IP phone Panasonic KX-HDV100 in terms of communication quality and VoIP functions is not inferior to more expensive products from other brands, it works with one SIP line and one Ethernet line. The "older" model KX-HDV130 is only a third more expensive, but it is distinguished by the support of two SIP accounts, two Internet lines, the presence of a speakerphone (loud-speaking communication) and the ability to power over Ethernet (PoE). Externally, both models look exactly the same, except for the headset jack and two Ethernet ports on the HDV130 instead of one on the HDV100.Each of the models Available in two colors: white and black.

Panasonic KX-HDV100RU white:

Yealink IP Phones

One of the leading suppliers of IP phones in the Russian market is the Chinese company Yealink Network Technology, whose focus is entirely on IP solutions in the field of telecommunications. The company produces convenient, functional and easy-to-manage IP devices. The advantages of Yealink IP phones are:

• Good ergonomics;
• Support for a large number of protocols connection establishment, information transfer, voice traffic compression;
• Wide Compatibility with leading IP PBX manufacturers;
• Competitive price.

An example is the entry-level device SIP-T19 ​​E2. It works with one sip-account and, according to technical characteristics, is an approximate analogue of the Panasonic KX-HDV100RU. The dimensions are slightly larger than the HDV100, the ergonomics are slightly better.

If you need an inexpensive IP phone with several SIP accounts, then you can choose it from the table below.

Yealink budget line Yealink SIP-T series IP phones show the best results in sound quality when using the Accutone TM7RJ-AKR-U10-PS headset, and for W52P they are suitable

Gigaset IP phones

The German company Gigaset from Munich is one of the leading manufacturers of telecommunications equipment. The company presents innovative solutions in the field of traditional and IP telephony for offices and home use. Gigaset has launched a successful line of SIP DECT devices on the market. The main features and advantages of Gigaset ip phones are:

• Free calls worldwide between Gigaset IP phones via network Gigaset.net;
• Job Opportunity with digital lines SIP protocol and analog line;
• Access to information online services(weather forecast, RSS feeds);
• View mailbox e-mail;
• Vibrating alert.

with answering machine and support for three simultaneous lines - 2 SIP and one analog:

Grandstream IP Phones

The American company Grandstream has long and successfully produced a full range of equipment for IP telephony, operating on the SIP protocol. The main focus is on the budget segment. Grandstream IP phones are reliable and easy-to-use devices for a wide range of end users, both private and corporate. Due to the focus on the open SIP protocol, they are compatible with various systems, software and servers from various manufacturers. The advantages of Grandstream devices are:

• Excellent ergonomics;
• High sound quality;
• Affordable price.

Budget model of an office IP phone with one SIP account - Grandstream GXP1610:

Office phone supporting SIP 2 lines and Power over Ethernet (PoE) - Grandstream GXP1625:

Budget models of IP phones of the above brands are comparable in terms of quality and price. Yet what is their difference?

Peculiarities Yealink:

• Nice ergonomics;
• Convenient WEB-interface for settings;
• High performance.

Advantages Panasonic:

• Possibility settings via WEB or download configuration file;
• Twodevice color options, which is sometimes important for compatibility with the interior of the office;
• SIP DECT models support more simultaneous conversations at a lower price than other brands.

Peculiarities Gigaset:

• Work with the SIP lines and analogue new;
• Free calls via gigaset.net

Differences Grandstream:

• The most budget price;
• X good ergonomics.

Model name Yealink	Number of SIP accounts	telephone lines

Mango Telecom is a leading SIP provider and equipment supplier.

Call Mango Telecom and conclude only one contract for receiving communication services and equipment.

Mango Telecom is not only an equipment seller, but also a leading SIP provider. You do not need to separately look for an equipment supplier and a telephone service provider, conclude a lot of contracts, pay a lot of bills, and then puzzle over how to connect the purchased equipment to a telecom operator. You need to make a call to just one company. Everything else is our concern!

Warranty 2 years for Yealink and Grandstream equipment and 5 years for Panasonic.

Only official equipment and exclusive conditions:

Only in Mango Telecom, manufacturers' equipment has an exclusive two-year warranty. Today there is a lot of "gray" equipment on the market, which is much cheaper than the official one. Such equipment, as a rule, is intended for sale in Europe, but is illegally imported into Russia. Therefore, it costs much less due to unpaid customs duties. If you buy such equipment and it fails, official service the manufacturer will simply refuse to repair you. And the store-seller, most likely, will not want to make repairs at their own expense. Thus, you can be left without equipment and without communication. Mango Telecom has direct contracts with all manufacturers of equipment offered in the online store. Therefore, our company always guarantees you full support for the purchased equipment.

Your business runs non-stop, even if your equipment fails.

We will provide you with equipment for the period of warranty repair.

If you buy equipment from Mango Telecom, and during the warranty period it fails through no fault of yours, we will provide you (and all customers without exception) with replacement equipment of the same characteristics. It is important that the equipment is provided for the entire repair period, so you will always stay in touch with customers, partners, suppliers and colleagues.

Turnkey telephony. Qualified engineers will come to you, qualitatively and quickly set up your equipment.

Departure of a Mango Telecom engineer and setting up four phones (ports) will cost you only 2000 rubles. In other companies, setting up one phone costs up to two thousand rubles. In addition, the high qualifications of Mango Telecom's full-time technical specialists guarantee you an equally high quality of the services provided.

Some hardware vendors don't have the in-house staff needed to set it up, as it's usually expensive for these professionals to work on the company's staff. Therefore, such sellers often offer contacts individuals, which cannot guarantee the quality of the equipment settings. Unlike them, Mango Telecom employs a whole staff of qualified engineers who can quickly, accurately and correctly set up equipment of any complexity, as well as guarantee its efficient operation.

24/7. Full responsibility and 24/7 technical support.

Mango Telecom is fully responsible for the configuration, installation and technical serviceability of equipment that undergoes mandatory testing for compatibility with the services of the Mango-Office line. Field technical support is also included in the company's services. A qualified engineer will come to your office as soon as necessary and fix the problem on the spot or make necessary setting. In addition, you can get technical support by phone or email. 24 hours a day, 7 days a week

If you want to quickly, easily and at no extra cost telephone an office or a company of any size and direction, or buy equipment “for a project”, Mango Telecom is ready to offer you favorable individual conditions and discounts on delivery, configuration and maintenance of equipment.

Gradually expanding its capabilities, promptly responding to market needs, IP telephony today offers consumers not only a standard set of functions, but also flexible, completely new solutions. One of the innovative trends in the development of VoIP technology is the WiFi IP phone, which is based on the wireless standard for information exchange. Support for IP telephony devices of Wireless Fidelity (Wi-Fi) technology ensures the interaction of subscribers by connecting phones to a computer IP network wirelessly, which does not require laying additional kilometers of cable.

After the first WiFi SIP phone was introduced to users, who quickly appreciated the convenience and mobility of using such devices, manufacturers began another struggle to attract a new client audience. The game continues on the market, and today not only Wi-Fi phones of well-known brands are available to consumers, but also wireless solutions of companies just starting their development.

WiFi IP phone - benefits of using

Wired IP telephony solutions, which are abundant on the market, no longer meet the needs of users who regularly move geographically. The implementation of the DECT standard allows you to expand the possibilities of communication, but still does not fully ensure the mobility of movement, since the handset is tied to a DECT base, which, nevertheless, is connected to computer network more often by wire.

Wi-Fi IP phone is best suited for use in the following conditions:

• enterprises deployed over a large area, where employees, moving around the territories, must always remain in the communication zone;
• using a SIP Wi-Fi phone in companies with distributed offices, employees can change their location while remaining tied to a specific number;
• WiFi SIP phone will be an excellent solution for home users who want to have a single communication device for travel, work, and home.

Among the advantages that any WiFi IP phone has are:

1. Deployment of high-quality communication without laying a cable, which is especially important for hard-to-reach points.
2. Support for access to networks of mobile devices.
3. Guaranteed interoperability of devices from different manufacturers.
4. Support for the Wi-Fi standard ensures the operation of these devices around the world.

Possibilities of IP phones of various manufacturers

Trying to understand the characteristics and capabilities of wireless WiFi IP phones, we have chosen for comparison several models from different manufacturers that work using the SIP protocol:

1. Welltech WP589 is a phone of one of the leading Taiwanese manufacturers.
2. AddPac AP-WP100 is a phone from the Korean company AddPac Technology.
3. Linksys WIP330 is a telephone from an American manufacturer operating under the Cisco Systems brand. Since January 2013, the company has become part of the Belkin Corporation.
4. ZyXEL P-2000W_V2 is a device from another, no less well-known, Taiwanese company.
5. DORO IP 700 WiFi is an IP phone from a Swedish company.

Each of the devices, having different functionalities, at the same time supports a large number of functions of the same type. These IP phones have the following features:

• work on wireless Wi-Fi technology;
• support for the SIP protocol, which guarantees high quality exchange of any type of information (voice, video, text messages);
• support for caller ID function;
• built-in phone book;
• call transfer;
• call forwarding support;
• call hold;
• memory dialing/speed dialing;
• call history;
• installation of melodies with the possibility of adjustment;
• voice activity recognition function;
• voice activity recognition function, which allows you to save traffic due to pauses in the conversation;
• support for the function of generating comfortable noise, which provides a sense of presence during pauses;
• the implementation of echo cancellation avoids acoustic inversion (reflection of one's own voice in the speaker);
• function keys;
• displaying information on the phone display;
• built-in encryption algorithms;
• vibrating alert;
• clock;
• the calendar;
• calculator;
• alarm.

Distinctive features of WiFi SIP phones

In addition to common tools, each of the presented VoIP phones has distinctive features.

This model from the Taiwanese company Welltech provides the possibility of registering 2x2 (two accounts on two servers), as well as support for IP PBX. If necessary, the firmware can be updated via the Internet.

Users will certainly be pleased to be able to use standard batteries from Nokia, which last for more than 150 hours of operation. It is also possible to connect to a PC or laptop using the MiniUSB interface.

In addition to the standard set of Wi-Fi IP phones, AddPac AP-WP100 can also be used in IP broadcasting systems. The device serves as a signal source using an external source connected to the 3.5mm-jack connector or its own microphone. Installation software Smart Messenger will allow you to control your phone from a regular computer.

The network capabilities of AddPac AP-WP100 are quite diverse - NAT/PAT support, network resource allocation optimization, DHCP server, VRRP protocol support, data routing.

3. WiFi IP phone Linksys WIP330

Convenient, and most importantly, intuitive settings and control interface in combination with

advanced functionality, of course, will appeal to the most advanced users. Ease of setup, built-in web browser, web browsing, work with email, as well as the ability to receive streaming video.

Another feature of the Linksys WIP330 is the presence of an adaptive jitter buffer (delays in data transmission, characteristic of the Internet), which compensates for jitter, improving the sound quality.

This device is endowed with a built-in WEB-configurator, support for auto-initialization, as well as the ability to connect a headset.

The phone provides the ability to set the portable radio mode when the devices communicate directly, bypassing access points and SIP servers.

Firmware update via Wi-Fi, strong WLAN encryption / wifi network, possibility

WLAN search using Site Survey commands, automatic network login, no impact when moving between access points.

Some more differences

Comparing these IP Wi-Fi devices, it is also desirable to note the following points:

1. Welltech WP589 WiFi ip phone, AddPac AP-WP100, Linksys WIP330 and DORO IP 700 WiFi have color displays, while ZyXEL P-2000W_V2 has a monochrome screen.
2. Phones support a different number of SIP servers:
   • Welltech WP589 - up to 4;
   • DORO IP 700 WiFi - up to 6;
   • other devices - from 2 to 4.
3. SIP wi-fi phone AddPac AP-WP100, as well as wi-fi ip phone Linksys WIP330 support the ability to create conference calls. In addition, the Linksys WIP330 is the only one among the presented models that supports video conferencing.
4. NAT support, implemented in the AddPac AP-WP100 and Linksys WIP330 devices, allows you to convert internal IP addresses to external ones and use a single address to access the Internet.
5. SIP wi-fi phone Welltech WP589 in addition to IP telephony can work as a regular GSM device.

SIP wi-fi phone - convenience and mobility

Concluding the review, I would like to once again note the functionality and mobility of movement, which is provided by the development of a new branch of IP telephony. The compactness of devices, the lack of attachment to a specific location, the variety of functions make wireless devices more and more popular. Well, the final choice should depend on the wishes of a particular user and the requirements that he makes to the phone.