There is a difference between an IP phone and a voip Phone.

Compared with building intercom, the network phone number can be said to have been in our daily use for a short time.

Generally speaking, a network phone is a system for voice communication in a computer network with IP as the network layer protocol. The technology used is collectively referred to as VoIP (Voiceover IP ), that is, the network is used for voice transmission. Technically speaking, the IP network telephone is the result of the integration of the two mainstream technologies, IP-marked network segmentation and multimedia-oriented network service integration.

With the increasingly improved network construction, the network environment is constantly improved. The boundaries between computers and telecommunications have also been gradually broken. Therefore, the network telephone is born in this fusion.

For network-based videophone, it features low price, flexible service, and convenient internal contact. At the same time, it is of great help to the integration of new technologies. In Network calls, it mainly solves two problems in terms of speech processing, that is, to minimize the bit rate while maintaining the quality of calls. The other is to ensure the quality of calls in an IP network environment. The introduction of video links is a technical addition that ensures audio transmission.

Although video transmission is also achieved through an IP network. However, they are somewhat different. IP video intercom, also known as Full Digital Intercom, is a digital product evolved from the original bus-based video intercom system.

The IP video intercom system uses the latest technologies such as digital audio and video compression, DSP, embedded and streaming media network transmission. In combination with the characteristics of the smart gateway system of the home, it uses the LAN of the residential area, audio and video are transmitted over the network. In addition to video transmission, the system can also complete alarms, access control, and smart appliance control.

From the above analysis, we can see that although they have small differences in some features, they can all meet our video communication needs at different ends. So does such commonality mean that they can be more easily integrated? The following is a simple analysis.

Differences in communication modes

Although there are very similar features. However, in terms of implementation methods, their differences are not small. For a network phone, its communication process is mainly based on a computer and a computer, a telephone and a telephone, or a call between a computer and a network phone. Network Video intercom mainly exists in the host and each extension at the door, or some specialized regional security management systems such as the Management Center and indoor extension. Although they belong to video communication, the difference between their service terminals is very obvious, which leads to more and more different directions in the specific use of technology.

Transfer path difference

In addition to the differences between terminals, there are also great differences in signal transmission paths. For an IP phone, it pays more attention to the voice communication between network devices, while the visual intercom pays more attention to the transmission of control signals between LAN. Therefore, if you want to use a network-based videophone for device signal control, its limitations on signal transmission types are still very strong.

Differences in audio and video quality

In the process of audio and video transmission, network videophone is more important than bandwidth. Because of the different network environments, such transmission is necessary in terms of audio and video quality and network transmission environments. Therefore, in such a case, high compression becomes an essential process for network videophone. However, a high proportion of compression will inevitably lead to a reduction in the quality of audio and video. Therefore, if you want to maintain high-quality audio and video effects on the network videophone, the current technology is still very difficult.

As video intercom is being transmitted and audio and video single-line quality is used, the quality of video is much better during LAN transmission. However, there is a lack of processing devices like videophone in the case of ECHO. Therefore, in terms of sound quality, it is still very difficult to solve echo problems.

Differences in usage requirements

In addition to the differences caused by technical factors, the user's differences in network phones and video intercom are also very large. For Network phones, users pay more attention to the transmission capability of audio and video in applications. More specifically, it should be the audio transmission capability, that is, the biggest role of the network phone is to build a bridge for users to communicate.

For visual intercom, it is more of a communication between security management and communication. For example, front-end access control, community broadcasting, and security system alarms. The relatively low quality of network telephone work is also an unbearable aspect of security applications to a certain extent.

From the above analysis, we can see that, in terms of both technical and application needs, the differences between visual intercom and network telephone are very large.

However, due to the huge cost difference between the network phone and the network video intercom, many vendors have transplanted the network phone technology almost unchanged to the video intercom application, although such a change has a great deal of innovation in cost saving, it has a huge side effect on security work. Sometimes there is a feeling that "you are not right at your lips.