What are VOIP and sip?

What is VoIP?

The complete name of VoIP is voice over Internet protocol, which is translated as Internet voice. It can be simply understood as a technology that uses an Internet system instead of a traditional telephone communication system for voice calls. In fact, the biggest difference between the two is that traditional voice calls use analog signal technology, which is prone to interference and difficult to avoid signal distortion, the capacity of traditional analog signal communication technology is limited, so the signal is compressed with high distortion, so the effect is not ideal. VoIP uses digital transmission technology, packets that contain voice information are transmitted over the network and can be compressed with low distortion. as long as these packets are received by the other party and are returned as voice signals according to the agreed rules, distortion is generally relatively small (Distortion mainly occurs on recording devices and speakers ).

What is sip?

Many VIOP products are called sip phones. What is sip? Notification SIP is
Item is similar to the HTTP text-based network transmission protocol. There are many similarities between SIP and HTTP. The application development based on the SIP protocol is also very simple.
All messaging products use the SIP protocol as the protocol for transmitting voice data packets. If the product you bought indicates the SIP, It is correct. The VOIP product using the SIP technology has great advantages, next we will
1.

Advantages of SIP phones:

The SIP Phone is indeed a very successful VoIP application. It has three main advantages:

1. Based on the current Internet system, the SIP Phone provides easy access and wide coverage, and requires very simple equipment. Other similar technologies basically do not meet the above requirements.

2,
The charge for a traditional phone call to call a domestic or international long-distance call is simply overwhelming. If a friend or family member is abroad, it will be very painful to contact him by phone, for sip phones, you only need to pay for local electricity.
You can call international or domestic long-distance flights. Due to the low investment required by VOIP and the low occupation of line resources, the telecom department is very cost-effective for long-distance VoIP services.
After use, you will feel great economic benefits.

3. The IP telecommunications industry can provide a variety of communication services, such as telephone, computer, fax, and fax.
Box, fax mailbox to fax machine, fax mailbox to web page, PC files (Excel, Word, e-mail) or images to fax machine, Multi-Point Video Conferencing System, Web phone, etc. SIP is exactly one
IP Telecom Services, so its application methods are very flexible and rich in functions.

4. The quality of VoIP calls is good. Due to technical defects, traditional telephone lines cannot avoid distortion and are relatively serious. VoIP uses the Internet for digital transmission to ensure that the IP phone has a good call quality.

How to Set Up sip VoIP:

At present, users must have two conditions for obtaining services: first, broadband access, the entire
Telephone connections are transmitted over a broadband network. The other is a simulated telephone adapter (ATA), which is usually provided by a VoIP provider or carrier. If you are an enterprise user, you do not need to purchase the supported data.
The gateway for hundreds of simultaneous ata calls. After purchasing the adapter, the user registers and obtains the provided ordinary phone number. You can also apply for other value-added services based on the actual situation.
The user number is bound to the IP address. The client uses a phone number that supports the SIP protocol or a computer with the relevant phone function software. When one end starts dialing, the system will obtain the IP address bound to this number from the database.
Then, both parties can directly call through the Internet or the PSTN network.

In addition, you can apply for a relay line to provide a local telephone network for the implementation of the SIP Phone, therefore, the user who calls a SIP Phone can use the same technology as the user who calls a SIP Phone or a common user who calls a PSTN, SIP Phone users can also receive calls from SIP users using the same technology or ordinary PSTN users.