Third-generation IPPBX - Support Integrated Communications

Third-generation IPPBX - Support Integrated Communications

As a cross-platform standards for converged communication services, SIP for enterprise users, not only means that many new features, more importantly, it can satisfy the various forms of communication needs. IP PBX has gone through three generations of evolution. The first and second due to its technical weaknesses, is not completely accepted by the market. With the global popularity of broadband networks and the standardization of IP phones, third-generation IP PBX emerged. It supports SIP protocols, integrated voice, fax, data and video communications capabilities that not only the traditional PBX to bring a great threat, and will gradually replace the former and became a leader in this field.
And compared to the previous VoIP protocols, SIP will be communications systems scalability and interoperability to a new level, on top of it, you can more easily set up a lot of new services.

Early instability, high cost
In the early 90s of the last century, based on PC-PBX technology began to appear. As the first generation of IP PBX, such technology is to PC as a communications platform, through various internal interface card (Internal Interface Cards) to communicate with central office switches (Central Office-referred to as CO) or external telephone contact, the execution of conversion and Other messaging features from the software installed on the PC to achieve. However, due to instability in PC operating systems, hard drives easy to collapse, PC transfer bus board is limited, circuit boards and power supplies supporting role in not ideal and other reasons, making the operation of the first generation of IP PBX is not very reliable.
In the end, this IP PBX has been eliminated.

Subsequently, the second-generation IP PBX appears. At this point more standardized system design, such as using a dedicated circuit board to deal with analog input and output, containing a processor with a more reliable operating system software to ensure that the operation of the exchange of information. In this area, Touchwave, Shoreline are all the second-generation IP PBX manufacturers. Second-generation IP PBX can only control a small range of ports, and only with the voice-switching capabilities. With the traditional circuit-switched systems, the second-generation IP PBX voice-exchange in the cost of higher
But also, and IP voice gateway (can be connected with the traditional PBX or a router) to compete.
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The transition to SIP
Fully digital transmission of voice the need for a unified digital phone standards. At present, some have been developed and implemented standard protocols, including MGCP, H.323, as well as the newer SIP protocol.

SIP (Process Initiation Protocol) to simplify the digital telephone and digital means of communication between the PBX and make IP telephony products cheaper. From the SIP at its birth, it adopted a similar model, and HTTP. And HTTP, as it is also based on IP networks. SIP server and the user (such as SIP phones) can completely control the entire process (voice, video, conferencing, instant message, etc.).CRM is the traditional circuit-switched mode of service delivery in stark contrast. In the traditional mode, the end-products such as the phone is no call control functions for all service functions of control are concentrated in the central switching unit.
SIP, compared with managers and users of the system provide the greatest flexibility. Many companies have launched to support SIP-IP telephony products, such as Siemens, Nortel Communications, Alcatel and Cisco, etc..

In addition, Microsoft has already included in the SIP application, Windows XP into Windows Messenger, as a call to establish the basic technology to the operating system to achieve an effective "slimming." Zultys MX1200, is designed for business communication needs tailored "media switch," it will voice, fax, data and video switching functions in a single chassis. Through high-speed CPU and digital signal processor (DSP), MX1200 and after the introduction of the MX250 makes up for deficiencies in previous generations of IP PBX. Users simply choose the phone, or SIP-based user interface program,
Be able to communicate through the MX1200. The traditional PBX voice only through the telecommunications network signals, while the third-generation IP PBX through the support of SIP, evolved into an integrated communication system, namely through the telecommunications network and the Internet to provide users with voice, fax, data and video and other means of communication.

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[Scot]

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