Adapter from sip phone to analog. SIP adapters. Advantages of ordering equipment from us

Currently, there are many communication options. The most profitable in terms of tariffing not only in Russia, but throughout the world is. In addition, neither mobile connection nor wired standard telephony can compete with it. To make communication with any part of the planet using an IP connection more convenient, experts recommend using a SIP adapter. It will allow you to communicate even when there is no computer at hand. This option is especially convenient for people who regularly negotiate by phone.

SIP adapter, what is it?

By definition, most of the users of this telephone service use a PC complete with a special headset to make negotiations. Thus, the ability to call when the computer is turned off is excluded. Other inconveniences include:

• After turning on the PC, it will take quite a long time to boot;
• It is possible that the computer will be busy at this moment;
• To ensure communication, additional devices (headset) will be required;
• If the PC is not connected, you will not be able to receive an incoming call.

Lack of privacy is another problem for the user. Discussion of personal topics, provided that on the same PC someone simultaneously performs the actions he needs, is excluded. Are there options to make conversations within IP-telephony convenient? Yes, if you buy and put into practice a VOIP adapter connected to the Internet.

What is a SIP (aka VOIP) adapter and how does it work? This is a small box equipped with indicators (LED). Connects to the Internet using a router or similar equipment. An ordinary traditional telephone is connected to the device, which is used in a wired telephone connection.

To activate the SIP adapter, it must first be configured to communicate with the server of one of the operators or with your own SIP server. The parameters and corresponding settings are entered via the web interface. Upon completion of all the above manipulations, the phone is connected and the ability to make calls is checked.

Attention!

We want to clarify that the need for a PC is only at the first stage in order to set up a connection. After that, outside interference is excluded, since the SIP adapter functions independently.

A typical VOIP adapter has only two ports. WAN port is used to connect to the Internet. An FXS port is required to connect a telephone and activate the station. Pairing with a computer required for configuration involves using the first port. To connect to a power source, there is a connector. In some models, there are other ports that allow you to work with a PC or connect another telephone.

Additional options for SIP adapters:

• Noise absorption - especially relevant when the phone is in a place where it is too noisy;
• The ability to use the services of two providers / servers - allows you to optimize communication costs;
• The presence of a Wi-Fi connection - there is no need to lay cables, pull wires;
• You can work with several accounts - it is especially important if separate access is practiced to communication services;
• Number identification is very convenient, especially if the main point is to receive incoming calls;
• Conference calling - you can simultaneously communicate with a group of people;
• Call holding and waiting - alternate communication with different users;
• Speakerphone - the ability to conduct a conversation without contact with the phone;
• Skype support - financially profitable IP-telephony and Skype at the same time.

There are many other options that make communication more convenient and functionality wider. Usually the full set of available functions is indicated in the technical data sheet. that comes with this device.

Popular brands of SIP adapters

Before making a purchase, it is advisable to understand which models are the most relevant:

• Cisco SPA112;
• Grandstream HT701;
• Cisco SPA122.

The first model released by a brand with a worldwide reputation is characterized by simplicity. It has a port for connecting to the network and two ports needed to connect phones. In this case, you will not be able to manage calls. The functions of holding a call, waiting for it are not provided, as well as conference calls. But there is an option that allows you to economically use traffic.

Cisco SPA122, a device with similar characteristics to the previous model. It is possible to connect to two or more servers, echo canceling function, router and voice gateway options. Also, the model can generate noise, which allows you to replace silent pauses in a conversation. There are two ports to connect phones.

Grandstream HT701 has only one port, which makes it possible to connect only one phone. But at the same time, the functionality is expanded here. In the presence of caller ID, conference calls, it is possible to hold calls and put them on hold. With the inherent ease of use of the model, its functionality is impeccable.

Which adapter to choose

Before making a purchase, you need to decide what functionality you need for comfortable work. If necessary, periodically call, the simplest option is enough. If you want to combine Skype with this type of telephone connection, you will need to buy the appropriate model. For use in home mode, it is enough to connect one device (telephone), therefore, the adapter must have one port designed for this purpose. A more complex option is suitable for work calls.

Optimal adapter selection

If you don’t have time to understand all the intricacies of this type of communication, but you have a desire to communicate on the phone with loved ones, colleagues, friends as profitably and for as long as possible, you are given a good opportunity to use the services of a virtual free PBX.

Phone VoIP adapter(aka SIP adapter) - what is it: an inexpensive device that allows you to start fully using IP telephony services or a half-hearted solution that is more likely to cause dissatisfaction with new technologies? Let's try to figure it out!

You have probably already heard about a significant reduction in the cost of telephone calls for urban, long-distance, international and cellular communications using IP-telephony. And, delving into a new topic for you to master the cost-effective technology of voice transmission over Internet channels, we found on the Web two options for technical “additional equipment” of analog telephone equipment operating in your office. These options consist in the use of additional devices that are connected either directly to the telephone set, or, if you have a private PBX, by installing a proprietary expansion card manufactured by the manufacturer of this station. Note that not all PBXs provide for the possibility of such an expansion, and if it is, then the total cost of the board and the reprogramming of the office mini-PBX required after its installation by the integrator company is about $10,000. So instead of such an upgrade, it is better to simply replace the existing analog station with an IP-PBX, it will be much cheaper. That is, the option with an expansion board, as it is very expensive, disappears.

In the case of the first option, which can be called "terminal", either telephone VoIP adapters or VoIP gateways are used. These devices are often confused by calling a VoIP adapter a VoIP gateway or pointing out that a VoIP adapter differs only in that it has a small number of phone ports (usually up to 10), while several dozen phones can be connected to a VoIP gateway . But VoIP gateways can also have 1-2 phone jacks, and they are not called VoIP adapters.

A VoIP adapter is also known as a "SIP adapter" because the primary session initiation protocol in IP telephony is SIP (Session Initiation Protocol). There are two more names for these devices - “ATA” (analogue telephone adapter) and “FXS adapter” (the latter indicates that the device has an FXS port connected by cable to the FXO port on a telephone or fax machine).

So what is the difference between a VoIP phone adapter and a VoIP gateway? By what criteria can you make the best choice in favor of one of these devices?

The simplest VoIP adapter has one WAN and one LAN port for connecting to the Internet and an internal computer network, plus one connector for connecting to an analog phone.

Answering the questions raised, it is worth emphasizing that many well-known manufacturers of VoIP telephone adapters classify them as entry-level IP telephony equipment aimed at SOHO users (Small Office / Home Office - small office / home office). This purpose "sets" the minimum price bar for devices that use inexpensive and, therefore, not the best components in terms of characteristics.

For example, to convert speech into packets of discrete data sent over IP networks, the VoIP adapter uses a processor with lower computing performance than the VoIP gateway. And this, of course, affects the quality of the conversion and voice reproduction.

But if consumers are ready for such troubles, considering the price factor to be decisive for choosing a device, then the reliability and stability of its operation (again, determined by the characteristics of the element base) will probably make the most "stingy" buyers of IP telephony equipment think.

Some manufacturers of VoIP / SIP adapters directly indicate that these devices are produced for consumers who are not very concerned about the reliability of communication. And on Internet forums, users of VoIP / SIP adapters rate their reliability and stability as "poor" or "close to satisfactory." And they advise "not to save on your peace of mind."

Alternative to phone VoIP or SIP adapter

The functionality of VoIP gateways and telephone VoIP adapters is almost identical, which is what marketers of the latter play on. Both devices provide automatic assignment of IP addresses, online software updates via the Internet, password protection against unauthorized access, dynamic network control to reduce interference and routing, as well as a number of other important functions that accompany the main "entry" analog phone to the IP telephony network.

Phone VoIP / SIP adapter: purpose determines capabilities

The Cisco ATA-186 SIP adapter has two FXS ports for connecting two analog phones. It is configured through the built-in pre-recorded voice messaging system that performs the function of call routing (Interactive Voice Response - IVR) or using the built-in web server.

However, as noted above, VoIP adapters do not provide levels of reliability, stability and communication quality that are acceptable to many users, and in terms of these indicators they cannot compete with VoIP gateways whose circuitry solutions are based on the use of high-performance processors and other electronic components of a higher class than in VoIP adapters.

For example, even AddPac Technology's dual-port VoiceFinder AP200D VoIP Gateway, marketed for small businesses, uses a high-performance 32-bit RISC processor running the APOS operating system to provide high levels of reliability, scalability, stability, and Quality of Service (QoS) . It uses the most advanced voice compression algorithms available today to ensure flawless voice transmission even at low bandwidth levels.

Another VoiceFinder brand model is AP2330, to which up to 24 analog devices are connected. In addition to the RISC processor, it is equipped with ROM (4 MB), RAM (64 MB), and two network interfaces 10/100Mbps Fast Ethernet (RJ45). All this is installed here to ensure high quality and reliability of communication.

For interfacing with telephone network devices, VoIP gateways can support three types of interfaces: 1) analog FXS - for connecting telephone sets, 2) analog FXO - for connecting to an analog PBX, 3) digital ISDN PRI / E1 - for connecting to a digital PBX.

Phone VoIP / SIP adapter: purpose determines capabilities

Any small business grows over time, and with an increase in the number of employees, it will be necessary to increase the subscriber base. At the same time, if a company has telephone VoIP adapters installed, then in order to expand the contingent of IP telephony users, it will be necessary to purchase these devices in addition. Therefore, even based on this premise, from the very beginning of business activity it is worth (in accordance with the enterprise development plans) to purchase a VoIP gateway with a “reserve” of ports to which new subscribers can be connected.

24 analog landlines can, of course, be "hung" on an eight-port VoIP adapter, for example, Linksys SPA-8000 - three analog phones per FXS connector. But with such an extension, all telephone "triples" will have one number, that is, it will be possible to speak on one of the three devices connected to one connector, and two subscribers will be forced to "stand in line."

Let's repeat the arguments in favor of choosing VoIP gateways, which were mentioned above - higher rates of voice quality, reliability and communication stability than SIP adapters.

In addition, most models of VoIP gateways have the ability to administer, manage bandwidth and network security, as well as prioritize, account for and analyze various types of traffic.

If the company has employees working at home, then for them the best hardware solution for IP telephony will no longer be a VoIP gateway or SIP adapter, but a SIP phone, the configuration and use of which is even easier.

Thus, despite the fact that VoIP / SIP adapters are actively offered today as a budget start to start using IP telephony services, only more reliable and high-quality IP equipment can guarantee you a successful start: VoIP gateways, IP phones, IP PBX.

IP-telephony is known worldwide as a means of communication with extremely low rates. At the same time, neither traditional wired telephony nor cellular communications can compete with it. To provide more convenient communication with the world through IP-telephony, subscribers are recommended to purchase a SIP-adapter. With it, they will be able to talk to other people without a computer, which provides a special convenience for telephone conversations.

Most subscribers use traditional computers with headsets connected to them for IP-telephony conversations. It turns out that when the computer is turned off, it will not work anywhere. Also, we can note the following inconveniences:

Confidentiality is also violated - you won’t talk on purely personal topics with a headset on your head at the moment when someone is working on the same computer in parallel? How to ensure the convenience of conversations through IP-telephony? In this case, you should buy a VOIP adapter that connects to the Internet.

What is a SIP adapter (or VOIP adapter) and how does it work? The adapter is a small box with LED indicators that connects to the Internet through a router or any other device used to connect to the network. The most common phone used in traditional telephony is connected to the adapter itself.

In order for the SIP adapter to work, it must be configured to communicate with your SIP server or with the server of the selected telecom operator. Settings and parameters are entered via the web interface. After completing the settings, we connect a telephone set to the adapter and try to call.

Please note that the computer is needed here only for the initial setup - in the future, the SIP adapter works in a completely autonomous mode, without requiring any intervention.

The simplest telephone VOIP adapter is equipped with two ports - the WAN port is used to connect to the Internet, and the FXS port is designed to connect a conventional telephone set and emulates the operation of a telephone exchange. Connection to a computer to configure the device is carried out using the WAN port. Also on board there is a connector for connecting a power source. Some models are equipped with additional ports for connecting another phone or for switching with a computer.

Additional features of SIP adapters:

• Noise suppression is a great option if the phone is in a noisy environment;
• Ability to connect to two servers/providers - useful when optimizing communication costs;
• Wi-Fi connection - save your apartment from unnecessary wires;
• Ability to work with two or more accounts - relevant when using separate access to communication services;
• Number identification is a convenient option for those who use IP-telephony for incoming calls;
• Conference calls - the ability to organize communication with several subscribers at once;
• Holding and waiting for a call - the possibility of alternate communication with several subscribers;
• Speakerphone - you can talk even without a telephone;
• Support for the Skype protocol - low-cost IP-telephony and Skype-phone "in one bottle".

Many other features have also been implemented that significantly expand the functionality and make communication more convenient. You can find out about the availability of certain functions in the passport for the device.

Popular SIP adapter models

If you are going to buy a VOIP adapter, you should familiarize yourself with the most popular models:

• Cisco SPA112;
• Cisco SPA122;
• Grandstream HT701.

The Cisco SPA112 SIP adapter is the simplest model developed by a world famous brand. The adapter is equipped with one port for connecting to the Internet and two ports for connecting telephones. There are no options for managing calls here - no conference calls, no hold and call waiting. But there is a voice activity recognition system that saves traffic.

The next model, the Cisco SPA122, is similar to the previous one. It can connect to several servers, has the functions of a voice gateway and a router, and is endowed with comfortable noise generation that replaces silent pauses in a conversation. Also implemented echo cancellation function. Number of FXS ports for connecting telephone sets - 2 pcs. The Grandstream HT701 SIP adapter has only one port for connecting a telephone set.

But there are additional call management functions - this is a conference call, holding and waiting for a call, caller ID. The model is extremely simple, but performs its functions perfectly.

Which VOIP adapter to choose

When buying a telephone VOIP adapter, you should first determine the functionality. If you need a simple adapter for periodic conversations, choose the simplest model. If you want to use not only IP-telephony, but also Skype, then we are looking for a model with support for the Skype protocol. As for the number of handsets, a SIP adapter with one FXS port is enough for home use.

I like it I don't like it

Easy to connect and configure SIP adapters allow you to convert voice information into data packets for transmission over Internet channels. Installation of equipment makes it possible to reduce the cost of traditional communication.

Features of SIP adapters

The Univoice catalog contains several brands and models of such equipment, each of which is available for order. Technology features include:

• compact size and wide functionality;
• the possibility of organizing conferences in the format of audio and video;
• recording and listening to conversations;
• the possibility of accounting and statistics of telephone conversations;
• high quality communication, no interference and noise.

The purchase of an adapter of this type is possible for installation in an office or apartment. The main advantage of using technology is to reduce the cost of communication with subscribers.

Advantages of ordering equipment from us

The Univoice company sells equipment of the world's leading brands. You can buy a SIP adapter for a private house, enterprise, public building or office from us. The equipment comes with quality certificates and warranty.

If the client has questions about the technical characteristics, our managers will be able to tell you about the features of each model. Ordering is possible on the website or in the office of the enterprise, as well as by phone.