March 1997 was one of the important moments in the development of video conferencing, and ITU-T (ITU Telecommunications Commission) released a standard video conferencing protocol for local area networks - H.323, for those with the Internet and Intranet-connected video conferencing systems provide interoperability standards, and vendors are launching video conferencing products that meet this standard. Previously, H.320, a group video conferencing standard protocol for ISDN, has dominated the technology and product development in the video conferencing space. The difference between the two lies in the following aspects:
1. Network structure
The H.323 bus type network structure does not affect the entire conference and network due to temporary failure of one terminal. The H.320 master-slave star-splicing structure may cause a number of network conferences to malfunction due to a single-point temporary failure without the fault-tolerant backup mechanism on the important nodes.
2. Business development
H.320 only defines a circuit-switched video conferencing system. Therefore, standard video conferencing applications can only be implemented on the transmission network platform, and cannot be extended to a multimedia and multi-application platform.
H.323 technology can develop many multimedia applications unrelated to the underlying network transmission on the network, such as multimedia video conferencing, multimedia monitoring, multimedia production scheduling command, remote enterprise training and education, multimedia call center, online IP telephony, online IP fax Online video on demand and broadcast, etc., can use H.323 technology to add multiple applications and services to the same transmission network platform. Video conferencing is only one of its applications.
3. Performance price ratio
Due to the limitations of the traditional TV system conference technology system, H.320 does not have the flexibility and rich functions. Moreover, whether it is the H.320 terminal or the H.320 MCU, its user stand-alone cost and user line usage cost are higher. high.
H.323 adopts advanced TCP/IP technology to provide the same performance and more functions, while greatly reducing the cost of user terminals and user line usage costs, and has a high performance-price ratio.
4. Data function
The H.320 system uses the T.120 standard to implement data conferencing functions (such as electronic whiteboard, file transfer, application sharing), and its data applications are included in the H.320/H.221 multiplexed channel. The T.120 data channel of the H.320 system reaches up to 64Kbps. When transferring large-capacity files and high-quality graphics, the video quality is degraded and the image quality is degraded and the image is temporarily paused.
The H.323 standard follows the data conferencing standard under the T.120 system to implement data application functions (such as electronic whiteboard, file transfer, and application sharing). However, its data application is independent of the H.323 session process, and its data channel does not need to undergo a multiplexing process. It directly opens a separate T.120 data channel on TCP or UDP (broadcast). The channel bandwidth can be from a few. KBPS is adjustable to a few MBPS or a few 10MBPS, showing great advantages and flexibility.
5. Multicast
H.323 is based on the TCP/IP protocol, while the IP protocol has the multicast capability IP Multicast (RFC1112). This makes it easy to implement multimedia broadcasting services such as video broadcasting on the Internet.
H.320 itself does not have multicast capabilities, and there is no effective underlying protocol to support it. Therefore, the H.320 system does not have the multicast function - that is, the establishment of a broadcast channel. It may use the MCU to implement quasi-broadcasting with interactive multipoints instead of broadcast channels.
Although the H.320 and H.323 systems use the same image and speech codec technology, the essence of image and sound performance is the same, but it is not difficult to see from the comparison of the above advantages. The H.323 protocol standard is the development direction and trend of future multimedia video conferencing and other online multimedia applications. As a traditional technical standard, H.320 has gradually withdrawn from the historical arena due to the emergence of new technologies and its inherent limitations and high costs. March 1997 was one of the important moments in the development of video conferencing, and ITU-T (ITU Telecommunications Commission) released a standard video conferencing protocol for local area networks - H.323, for those with the Internet and Intranet-connected video conferencing systems provide interoperability standards, and vendors are launching video conferencing products that meet this standard. Previously, H.320, a group video conferencing standard protocol for ISDN, has dominated the technology and product development in the video conferencing space. The difference between the two lies in the following aspects:
1. Network structure
The H.323 bus type network structure does not affect the entire conference and network due to temporary failure of one terminal. The H.320 master-slave star-splicing structure may cause a number of network conferences to malfunction due to a single-point temporary failure without the fault-tolerant backup mechanism on the important nodes.
2. Business development
H.320 only defines a circuit-switched video conferencing system. Therefore, standard video conferencing applications can only be implemented on the transmission network platform, and cannot be extended to a multimedia and multi-application platform.
H.323 technology can develop many multimedia applications unrelated to the underlying network transmission on the network, such as multimedia video conferencing, multimedia monitoring, multimedia production scheduling command, remote enterprise training and education, multimedia call center, online IP telephony, online IP fax Online video on demand and broadcast, etc., can use H.323 technology to add multiple applications and services to the same transmission network platform. Video conferencing is only one of its applications.
3. Performance price ratio
Due to the limitations of the traditional TV system conference technology system, H.320 does not have the flexibility and rich functions. Moreover, whether it is the H.320 terminal or the H.320 MCU, its user stand-alone cost and user line usage cost are higher. high.
H.323 adopts advanced TCP/IP technology to provide the same performance and more functions, while greatly reducing the cost of user terminals and user line usage costs, and has a high performance-price ratio.
4. Data function
The H.320 system uses the T.120 standard to implement data conferencing functions (such as electronic whiteboard, file transfer, application sharing), and its data applications are included in the H.320/H.221 multiplexed channel. The T.120 data channel of the H.320 system reaches up to 64Kbps. When transferring large-capacity files and high-quality graphics, the video quality is degraded and the image quality is degraded and the image is temporarily paused.
The H.323 standard follows the data conferencing standard under the T.120 system to implement data application functions (such as electronic whiteboard, file transfer, and application sharing). However, its data application is independent of the H.323 session process, and its data channel does not need to undergo a multiplexing process. It directly opens a separate T.120 data channel on TCP or UDP (broadcast). The channel bandwidth can be from a few. KBPS is adjustable to a few MBPS or a few 10MBPS, showing great advantages and flexibility.
5. Multicast
H.323 is based on the TCP/IP protocol, while the IP protocol has the multicast capability IP Multicast (RFC1112). This makes it easy to implement multimedia broadcasting services such as video broadcasting on the Internet.
H.320 itself does not have multicast capabilities, and there is no effective underlying protocol to support it. Therefore, the H.320 system does not have the multicast function - that is, the establishment of a broadcast channel. It may use the MCU to implement quasi-broadcasting with interactive multipoints instead of broadcast channels.
Although the H.320 and H.323 systems use the same image and speech codec technology, the essence of image and sound performance is the same, but it is not difficult to see from the comparison of the above advantages. The H.323 protocol standard is the development direction and trend of future multimedia video conferencing and other online multimedia applications. As a traditional technical standard, H.320 has gradually withdrawn from the historical arena due to the emergence of new technologies and its inherent limitations and high costs. March 1997 was one of the important moments in the development of video conferencing, and ITU-T (ITU Telecommunications Commission) released a standard video conferencing protocol for local area networks - H.323, for those with the Internet and Intranet-connected video conferencing systems provide interoperability standards, and vendors are launching video conferencing products that meet this standard. Previously, H.320, a group video conferencing standard protocol for ISDN, has dominated the technology and product development in the video conferencing space. The difference between the two lies in the following aspects:
1. Network structure
The H.323 bus type network structure does not affect the entire conference and network due to temporary failure of one terminal. The H.320 master-slave star-splicing structure may cause a number of network conferences to malfunction due to a single-point temporary failure without the fault-tolerant backup mechanism on the important nodes.
2. Business development
H.320 only defines a circuit-switched video conferencing system. Therefore, standard video conferencing applications can only be implemented on the transmission network platform, and cannot be extended to a multimedia and multi-application platform.
H.323 technology can develop many multimedia applications unrelated to the underlying network transmission on the network, such as multimedia video conferencing, multimedia monitoring, multimedia production scheduling command, remote enterprise training and education, multimedia call center, online IP telephony, online IP fax Online video on demand and broadcast, etc., can use H.323 technology to add multiple applications and services to the same transmission network platform. Video conferencing is only one of its applications.
3. Performance price ratio
Due to the limitations of the traditional TV system conference technology system, H.320 does not have the flexibility and rich functions. Moreover, whether it is the H.320 terminal or the H.320 MCU, its user stand-alone cost and user line usage cost are higher. high.
H.323 adopts advanced TCP/IP technology to provide the same performance and more functions, while greatly reducing the cost of user terminals and user line usage costs, and has a high performance-price ratio.
4. Data function
The H.320 system uses the T.120 standard to implement data conferencing functions (such as electronic whiteboard, file transfer, application sharing), and its data applications are included in the H.320/H.221 multiplexed channel. The T.120 data channel of the H.320 system reaches up to 64Kbps. When transferring large-capacity files and high-quality graphics, the video quality is degraded and the image quality is degraded and the image is temporarily paused.
The H.323 standard follows the data conferencing standard under the T.120 system to implement data application functions (such as electronic whiteboard, file transfer, and application sharing). However, its data application is independent of the H.323 session process, and its data channel does not need to undergo a multiplexing process. It directly opens a separate T.120 data channel on TCP or UDP (broadcast). The channel bandwidth can be from a few. KBPS is adjustable to a few MBPS or a few 10MBPS, showing great advantages and flexibility.
5. Multicast
H.323 is based on the TCP/IP protocol, while the IP protocol has the multicast capability IP Multicast (RFC1112). This makes it easy to implement multimedia broadcasting services such as video broadcasting on the Internet.
H.320 itself does not have multicast capabilities, and there is no effective underlying protocol to support it. Therefore, the H.320 system does not have the multicast function - that is, the establishment of a broadcast channel. It may use the MCU to implement quasi-broadcasting with interactive multipoints instead of broadcast channels.
Although the H.320 and H.323 systems use the same image and speech codec technology, the essence of image and sound performance is the same, but it is not difficult to see from the comparison of the above advantages. The H.323 protocol standard is the development direction and trend of future multimedia video conferencing and other online multimedia applications. As a traditional technical standard, H.320 has gradually withdrawn from the historical arena due to the emergence of new technologies and its inherent limitations and high costs.
1. Network structure
The H.323 bus type network structure does not affect the entire conference and network due to temporary failure of one terminal. The H.320 master-slave star-splicing structure may cause a number of network conferences to malfunction due to a single-point temporary failure without the fault-tolerant backup mechanism on the important nodes.
2. Business development
H.320 only defines a circuit-switched video conferencing system. Therefore, standard video conferencing applications can only be implemented on the transmission network platform, and cannot be extended to a multimedia and multi-application platform.
H.323 technology can develop many multimedia applications unrelated to the underlying network transmission on the network, such as multimedia video conferencing, multimedia monitoring, multimedia production scheduling command, remote enterprise training and education, multimedia call center, online IP telephony, online IP fax Online video on demand and broadcast, etc., can use H.323 technology to add multiple applications and services to the same transmission network platform. Video conferencing is only one of its applications.
3. Performance price ratio
Due to the limitations of the traditional TV system conference technology system, H.320 does not have the flexibility and rich functions. Moreover, whether it is the H.320 terminal or the H.320 MCU, its user stand-alone cost and user line usage cost are higher. high.
H.323 adopts advanced TCP/IP technology to provide the same performance and more functions, while greatly reducing the cost of user terminals and user line usage costs, and has a high performance-price ratio.
4. Data function
The H.320 system uses the T.120 standard to implement data conferencing functions (such as electronic whiteboard, file transfer, application sharing), and its data applications are included in the H.320/H.221 multiplexed channel. The T.120 data channel of the H.320 system reaches up to 64Kbps. When transferring large-capacity files and high-quality graphics, the video quality is degraded and the image quality is degraded and the image is temporarily paused.
The H.323 standard follows the data conferencing standard under the T.120 system to implement data application functions (such as electronic whiteboard, file transfer, and application sharing). However, its data application is independent of the H.323 session process, and its data channel does not need to undergo a multiplexing process. It directly opens a separate T.120 data channel on TCP or UDP (broadcast). The channel bandwidth can be from a few. KBPS is adjustable to a few MBPS or a few 10MBPS, showing great advantages and flexibility.
5. Multicast
H.323 is based on the TCP/IP protocol, while the IP protocol has the multicast capability IP Multicast (RFC1112). This makes it easy to implement multimedia broadcasting services such as video broadcasting on the Internet.
H.320 itself does not have multicast capabilities, and there is no effective underlying protocol to support it. Therefore, the H.320 system does not have the multicast function - that is, the establishment of a broadcast channel. It may use the MCU to implement quasi-broadcasting with interactive multipoints instead of broadcast channels.
Although the H.320 and H.323 systems use the same image and speech codec technology, the essence of image and sound performance is the same, but it is not difficult to see from the comparison of the above advantages. The H.323 protocol standard is the development direction and trend of future multimedia video conferencing and other online multimedia applications. As a traditional technical standard, H.320 has gradually withdrawn from the historical arena due to the emergence of new technologies and its inherent limitations and high costs. March 1997 was one of the important moments in the development of video conferencing, and ITU-T (ITU Telecommunications Commission) released a standard video conferencing protocol for local area networks - H.323, for those with the Internet and Intranet-connected video conferencing systems provide interoperability standards, and vendors are launching video conferencing products that meet this standard. Previously, H.320, a group video conferencing standard protocol for ISDN, has dominated the technology and product development in the video conferencing space. The difference between the two lies in the following aspects:
1. Network structure
The H.323 bus type network structure does not affect the entire conference and network due to temporary failure of one terminal. The H.320 master-slave star-splicing structure may cause a number of network conferences to malfunction due to a single-point temporary failure without the fault-tolerant backup mechanism on the important nodes.
2. Business development
H.320 only defines a circuit-switched video conferencing system. Therefore, standard video conferencing applications can only be implemented on the transmission network platform, and cannot be extended to a multimedia and multi-application platform.
H.323 technology can develop many multimedia applications unrelated to the underlying network transmission on the network, such as multimedia video conferencing, multimedia monitoring, multimedia production scheduling command, remote enterprise training and education, multimedia call center, online IP telephony, online IP fax Online video on demand and broadcast, etc., can use H.323 technology to add multiple applications and services to the same transmission network platform. Video conferencing is only one of its applications.
3. Performance price ratio
Due to the limitations of the traditional TV system conference technology system, H.320 does not have the flexibility and rich functions. Moreover, whether it is the H.320 terminal or the H.320 MCU, its user stand-alone cost and user line usage cost are higher. high.
H.323 adopts advanced TCP/IP technology to provide the same performance and more functions, while greatly reducing the cost of user terminals and user line usage costs, and has a high performance-price ratio.
4. Data function
The H.320 system uses the T.120 standard to implement data conferencing functions (such as electronic whiteboard, file transfer, application sharing), and its data applications are included in the H.320/H.221 multiplexed channel. The T.120 data channel of the H.320 system reaches up to 64Kbps. When transferring large-capacity files and high-quality graphics, the video quality is degraded and the image quality is degraded and the image is temporarily paused.
The H.323 standard follows the data conferencing standard under the T.120 system to implement data application functions (such as electronic whiteboard, file transfer, and application sharing). However, its data application is independent of the H.323 session process, and its data channel does not need to undergo a multiplexing process. It directly opens a separate T.120 data channel on TCP or UDP (broadcast). The channel bandwidth can be from a few. KBPS is adjustable to a few MBPS or a few 10MBPS, showing great advantages and flexibility.
5. Multicast
H.323 is based on the TCP/IP protocol, while the IP protocol has the multicast capability IP Multicast (RFC1112). This makes it easy to implement multimedia broadcasting services such as video broadcasting on the Internet.
H.320 itself does not have multicast capabilities, and there is no effective underlying protocol to support it. Therefore, the H.320 system does not have the multicast function - that is, the establishment of a broadcast channel. It may use the MCU to implement quasi-broadcasting with interactive multipoints instead of broadcast channels.
Although the H.320 and H.323 systems use the same image and speech codec technology, the essence of image and sound performance is the same, but it is not difficult to see from the comparison of the above advantages. The H.323 protocol standard is the development direction and trend of future multimedia video conferencing and other online multimedia applications. As a traditional technical standard, H.320 has gradually withdrawn from the historical arena due to the emergence of new technologies and its inherent limitations and high costs. March 1997 was one of the important moments in the development of video conferencing, and ITU-T (ITU Telecommunications Commission) released a standard video conferencing protocol for local area networks - H.323, for those with the Internet and Intranet-connected video conferencing systems provide interoperability standards, and vendors are launching video conferencing products that meet this standard. Previously, H.320, a group video conferencing standard protocol for ISDN, has dominated the technology and product development in the video conferencing space. The difference between the two lies in the following aspects:
1. Network structure
The H.323 bus type network structure does not affect the entire conference and network due to temporary failure of one terminal. The H.320 master-slave star-splicing structure may cause a number of network conferences to malfunction due to a single-point temporary failure without the fault-tolerant backup mechanism on the important nodes.
2. Business development
H.320 only defines a circuit-switched video conferencing system. Therefore, standard video conferencing applications can only be implemented on the transmission network platform, and cannot be extended to a multimedia and multi-application platform.
H.323 technology can develop many multimedia applications unrelated to the underlying network transmission on the network, such as multimedia video conferencing, multimedia monitoring, multimedia production scheduling command, remote enterprise training and education, multimedia call center, online IP telephony, online IP fax Online video on demand and broadcast, etc., can use H.323 technology to add multiple applications and services to the same transmission network platform. Video conferencing is only one of its applications.
3. Performance price ratio
Due to the limitations of the traditional TV system conference technology system, H.320 does not have the flexibility and rich functions. Moreover, whether it is the H.320 terminal or the H.320 MCU, its user stand-alone cost and user line usage cost are higher. high.
H.323 adopts advanced TCP/IP technology to provide the same performance and more functions, while greatly reducing the cost of user terminals and user line usage costs, and has a high performance-price ratio.
4. Data function
The H.320 system uses the T.120 standard to implement data conferencing functions (such as electronic whiteboard, file transfer, application sharing), and its data applications are included in the H.320/H.221 multiplexed channel. The T.120 data channel of the H.320 system reaches up to 64Kbps. When transferring large-capacity files and high-quality graphics, the video quality is degraded and the image quality is degraded and the image is temporarily paused.
The H.323 standard follows the data conferencing standard under the T.120 system to implement data application functions (such as electronic whiteboard, file transfer, and application sharing). However, its data application is independent of the H.323 session process, and its data channel does not need to undergo a multiplexing process. It directly opens a separate T.120 data channel on TCP or UDP (broadcast). The channel bandwidth can be from a few. KBPS is adjustable to a few MBPS or a few 10MBPS, showing great advantages and flexibility.
5. Multicast
H.323 is based on the TCP/IP protocol, while the IP protocol has the multicast capability IP Multicast (RFC1112). This makes it easy to implement multimedia broadcasting services such as video broadcasting on the Internet.
H.320 itself does not have multicast capabilities, and there is no effective underlying protocol to support it. Therefore, the H.320 system does not have the multicast function - that is, the establishment of a broadcast channel. It may use the MCU to implement quasi-broadcasting with interactive multipoints instead of broadcast channels.
Although the H.320 and H.323 systems use the same image and speech codec technology, the essence of image and sound performance is the same, but it is not difficult to see from the comparison of the above advantages. The H.323 protocol standard is the development direction and trend of future multimedia video conferencing and other online multimedia applications. As a traditional technical standard, H.320 has gradually withdrawn from the historical arena due to the emergence of new technologies and its inherent limitations and high costs.
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