Cheap SIP trunk is becoming increasingly popular, especially when you have to install telephones in the office, where the usual connection is not available or is too expensive. VoIP allows you to pay for international and intercity communication at local rates.
Many businessmen use the features of communications services. No wonder. The SIP trunking is much cheaper than communication over landlines. There are service companies that offer direct numbers to their customers in the countries, to which they will call. However, they are usually gobetweeners for the performer and the customer. However, businessmen still have to pay more.
A cheaper way about it is to competently organize cheap communications, using your own hardware: buy the required equipment and connect the SIP gateway. Let us consider each option individually.
The cheap SIP trunk is normally connected as follows: you should install the equipment, specialized software and connect a SIP-phone. Depending on the model and type of a SIP-phone, it can operate autonomously, using a conventional outlet and internet connection.
In the first case, terminators (SIP trunking specialists) buy phones win an additional soft phone or videophone. This allows them to call abroad or to another city at local rates. In the second case, such SIP-devices are connected only to the internal lines, while the fixed PSTN (regular telephone lines) and VoIP gateway act as connection intermediaries.
VoIP telephony SIP provides subscribers with a great choice. Experienced terminators use multichannel gateways connecting them to the SIP-adapter for incoming calls, or directly to landline phones and SIP GSM gateways . This device converts analog signals to digital ones and transmits them through SIP RTP protocol to the subscriber.
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SIP gateways differ in the number of simultaneously supported phone numbers and can be of various types. Some identify phone numbers via a special SIP-server, with regular phones or fax machines or analog lines connected to them. Others, which are more complex, interact with digital PBXs. They perform routing and provide a multi-channel communication.
It is no coincidence that experts call the SIP gateway is an intelligent device. It is more difficult to connect and setup than GSM and VoIP-gateway. In order to set it up and connect it, you should have a SIP-server, user ID and a password. Registration on a SIP-server enables a call-center to work in conjunction with the office CMS and do automatic SMS-distribution for customers.
The SIP gateway can be equipped with a different number of channels. When choosing a gateway model, experts recommend focusing on maximum communication load (number of concurrent calls), lest you have communication failure and data loss.
At the same time, regardless of the equipment used, the cheap SIP trunk is not limited with communication between subscribers. Users can organize video chats, send and receive messages, transfer calls to other devices, keep statistics and maintain consolidated subscriber base.
Accordingly, the SIP trunking is irreplaceable for communication, as it allows many companies for inexpensive video conferencing, with the participation of a large online audience, and does not limit managers with one country.
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