Introduction to SOHOSIPS technology in embedded Linux (Figure)

Article title: Introduction to SOHOSIPS technology in embedded Linux (figure ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
The wide application of SOHO equipment greatly improves office efficiency. However, these devices are mostly developed based on Windows, which generally have problems such as limited integration functions, low system performance and stability, difficult management and maintenance, and high initial investment costs.
　　
Ipeya's recently developed small office IP system (SIPS) based on embedded Linux integrates many network and service functions, effectively solving problems existing in traditional SOHO devices, in addition, the system configuration can be customized based on user needs, with good market prospects.
　　
　　 Small size and powerful functions
　　
SIPS is small and encapsulated in a 6.5 inch x 5 inch x 5 inch x 10. Mini PC chassis. It can be equipped with Intel saiyang 1.7GHz ~ GHz processor, MB ~ MB memory and 40 MB to store the system boot file ~ MB internal hard disk. In addition, SIPS also supports RAID to provide faster file services.
　　
As shown in 1, the SIPS system panel includes a public telephone network (PSTN) interface (which can be upgraded to four), one ~ Five 10 MB/MB Ethernet ports, one parallel print port and two USB ports, and one backlit LCD screen and six buttons for system menu selection and system control.
　　 　
SIPS system panel
　　
Up to five embedded hubs can be added to SIPS and up to 20 users can be added. In addition, each system has an independent ID for security purposes. The system also configures Ethernet-power line adapter and power line-wireless adapter. any power outlet near the telephone location can be used as a network connection port.
　　
The system can also achieve network connection through the Ethernet adapter, home broadband network interface, or wireless repeater of the USB interface. This brings great convenience to users. without being limited by the environment, you can easily build a SOHO system and minimize the wiring of SIPS installation.
　　
　　 Integrate multiple systems
　　
SIPS integrates multiple functions such as the VoIP/voice messaging system with the functions of routing, firewall, file service, and print service (2 ).
　　
IT office environment composed of SIPS
　　
Through the SIP protocol, SIPS can interwork with IP phones and traditional telephones based on private group switches (PBXs). it can provide automatic services such as SIP, IP address, and PBX, and has the VoIP-PSTN gateway function, you can remotely send voice emails to users. SIPS can use the SIP phone to implement the system's conversation with other users. with the SIP extension adapter, it can support up to 20 normal phone users.
　　
SIPS can provide Wan routing, DHCP service, firewall network address translation (NAT), port filtering and forwarding, serial port service, and file storage up to GB, it plays the role of a small server and has high performance.
　　
　　 Powerful functions come from Linux
　　
SIPS software is developed based on Linux Kernel 2.4.20. it draws on extensive experience in Linux Kernel and application development and uses many open source code packages with strong custom functions, in addition, it has added many patches provided by the Linux community, including file security and new device driver support.
　　
The R & D personnel developed all the Linux interfaces of the system and the drivers of custom devices. Currently, the system has added remote Internet connections and branch office functions.
　　
Based on Linux, SIPS also provides automatic network and telephone monitoring tools, webpage-based graphical configuration interface, DHCP service, and system status display and log functions, making the system easy to install and maintain.
　　
According to the plan, developers are developing software with additional features, such as video surveillance, distributed IP Group switches, email and fax services, intercom, and support for up to 800 users. These additional functions are free for registered users, reducing the cost of adding system functions to SIPS users later.
　　
　　 Why Linux?
　　
Why does SIPS use Linux as the system platform? Fleisher, CEO of the company, believes that Linux is the only reliable, low-cost, and acceptable operating system in the market. Linux has reliable services and applications, covering all the components of the system, and requires less investment from prototyping to product stereotypes.
　　
Of course, Linux is not perfect. There are too many similar implementation methods for the same component, and it is difficult to make the right choice without in-depth research. In addition, it does not support new hardware devices, and some software does not perform good tests on new hardware. Therefore, one of the challenges facing open source code is to reach the perfection level as soon as possible. The second challenge is to promote the application from the development stage to the product stage as soon as possible.
　　
Despite the challenges, Fleisher believes that the Linux kernel will be better, especially in the embedded device market. open source code and many organizations that are committed to improving them will eventually get a huge return. At present, many communication systems have been developed based on a powerful Linux platform, and the Linux-based network servers have successfully reversed the unfavorable competition with the Windows camp. In any case, selecting Linux is correct.