VoIP technology industry 39 s growing interest and investment is changing the current VoIP market structure Such as Linksys and Motorola manufacturers have developed a lot of VoIP products and through its strong retail channel sales so that these products have been rapidly spread while price pressures caused by global service providers forced to rethink this problem that is when they will build a number of key functional and lucrative enterprise applications turn the housing market how to correctly deal with VoIP br br Order to remain competitive many manufacturers have realized that their products can support the functions and features will determine their success or failure Of course endless pursuit of higher voice quality not only to overcome the direct impact on perceived quality QoS and WAN bottlenecks but also to provide a higher quality than traditional PSTN Each port must support at least G 711PCM VoIP speech coding and generally use the T 38 protocol implementation of the fax service Most broadband service providers to meet those who use low bandwidth connections such as DSLlite user needs also need support G 729ab and other low bit rate vocoder vocoder to save the limited bandwidth resources However in order to complete the balance of voice quality each VoIP channel must have a complete powerful voice processing system which contains excellent echo cancellation voice activity detection adaptive jitter buffer audio playback tone detection and production with DTMF relay in
RFC2833 a variety of features such as Caller ID variables and to support call forwarding and call transfer supplementary services br br But only to focus on core voice functionality can not form a competitive VoIP network Manufacturers have begun to integrate the same product in a strong voice gateway and home router functionality creating a rich variety of the final product configuration Common price integration features advanced performance service quality management and no experience in retail channels the pressure from these performance and cost expectations will reach the current level of many processors can not afford br br VoIP solution processing load VoIP Developer To develop the optimal cost to maintain while providing the necessary framework for efficient performance and functions must be understood to provide a reasonable voice quality and service all the necessary processing
However each function will take up CPU operation cycle if not carefully implemented to reduce the device performance thus potentially affect VoIP quality and overall data throughput br br Usually broadband modem or fiber Ethernet connection behind the existence of a residential voice gateway In addition to support for each voice channel voice processing functions the gateway must also provide a variety of WAN to LAN routing of data including quality of service QoS mechanisms firewall protection Network Address Translation NAT optional wireless LAN connection authentication and voice security and the recent experience of appearing on the market quality QoE.
Each function in maintaining and protecting the quality of the voice connection and play an important role and can not properly meet these requirements will lead directly to the perceived decline in voice quality br br 1 QoS mechanism QoS has been key to VoIP deployment Although most QoS mechanisms used some form of service tag or queue to achieve peak operating condition of packet transmission priority but in fact there are a variety of QoS mechanisms
From the VoIP view the main task is to ensure that the gateway voice packets than data packets higher priority as particularly sensitive voice packets on the delay if they arrive late voice quality will be seriously damaged In addition if the delay sensitive video traffic is voice video data quot triple play quot part of the home network it must be treated seriously ensure that video services are not fully occupy the highest priority queue and the impact on voice services br br 2 Firewall protection br Firewall to protect against unauthorized access to VoIP equipment plays a very important role it is business by preventing unauthorized access to LAN LAN and WAN mechanisms to enhance security between Firewall must provide a wealth of features including the prevention of unauthorized remote login SMTP session hijacking sessionhijacking Denial of Service DoS attacks email bombs designed macro hacker virus spam filtering Depending on the network vulnerabilities some of these features make the device has coverage is still the risk of exposure or abuse so any incomplete functional coverage is not acceptable.
RFC2833 a variety of features such as Caller ID variables and to support call forwarding and call transfer supplementary services br br But only to focus on core voice functionality can not form a competitive VoIP network Manufacturers have begun to integrate the same product in a strong voice gateway and home router functionality creating a rich variety of the final product configuration Common price integration features advanced performance service quality management and no experience in retail channels the pressure from these performance and cost expectations will reach the current level of many processors can not afford br br VoIP solution processing load VoIP Developer To develop the optimal cost to maintain while providing the necessary framework for efficient performance and functions must be understood to provide a reasonable voice quality and service all the necessary processing
However each function will take up CPU operation cycle if not carefully implemented to reduce the device performance thus potentially affect VoIP quality and overall data throughput br br Usually broadband modem or fiber Ethernet connection behind the existence of a residential voice gateway In addition to support for each voice channel voice processing functions the gateway must also provide a variety of WAN to LAN routing of data including quality of service QoS mechanisms firewall protection Network Address Translation NAT optional wireless LAN connection authentication and voice security and the recent experience of appearing on the market quality QoE.
Each function in maintaining and protecting the quality of the voice connection and play an important role and can not properly meet these requirements will lead directly to the perceived decline in voice quality br br 1 QoS mechanism QoS has been key to VoIP deployment Although most QoS mechanisms used some form of service tag or queue to achieve peak operating condition of packet transmission priority but in fact there are a variety of QoS mechanisms
From the VoIP view the main task is to ensure that the gateway voice packets than data packets higher priority as particularly sensitive voice packets on the delay if they arrive late voice quality will be seriously damaged In addition if the delay sensitive video traffic is voice video data quot triple play quot part of the home network it must be treated seriously ensure that video services are not fully occupy the highest priority queue and the impact on voice services br br 2 Firewall protection br Firewall to protect against unauthorized access to VoIP equipment plays a very important role it is business by preventing unauthorized access to LAN LAN and WAN mechanisms to enhance security between Firewall must provide a wealth of features including the prevention of unauthorized remote login SMTP session hijacking sessionhijacking Denial of Service DoS attacks email bombs designed macro hacker virus spam filtering Depending on the network vulnerabilities some of these features make the device has coverage is still the risk of exposure or abuse so any incomplete functional coverage is not acceptable.
1 comments:
Post is little bit complex to understand actually before reading the above article i don't know anything about VoIP technology.You shared a great details about VoIP technology.
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