Embedded   GSM   Avionics   DSP   Consumer   Automation   Unix   DOS\Windows   Networking
 
 
PRISMA Engineering S.r.l. is in Milan, Italy. We develop software, firmware and we supply professional consulting for embedded systems, Personal Computers (PC) and Workstations in GSM, GPRS, Avionics and Automation fields. We work with QNX, DSP, DOS, Windows, Unix operating system and we also develop device drivers for serial communication protocols. We develop simulator of the GSM and GPRS networks elements like: BSC, BTS, SGSN, GGSN, MSC, HLR, VLR, SMLC. The interfaces beween them are: Abis, A, Gb, Gi, Gn, Lb, Iub, Iu, Iur Our simulators support the following protocols: LAPD, SS7, MTP, SCCP, frame relay, ns, BSSGP, TCP/IP, ATM, AAL2, AAL5 According to the GSM and ITU specifications We support also UMTS protocols: SSCOP, SSCF-UNI, ALCAP SCTP, ITUN, AAL2, AAL5 List of keywords for search engines: GSM, QNX, DSP, GPRS, programmi, programmazione, RLC, firmware, embedded, MAC, systems, sistemi, device drivers, Gb, Milano, Milan, Italia, Abis, A, Italy, development, sviluppo, gprs, professional consulting, SS7, consulenza, Gi, Umts, Abis, Personal Computers, PC, computer, A, Workstations, Workstation, DOS, Windows, Unix, Avionics, Avionica, Atm, AAL2, Automation, Automazione
Linux is a successful operating system which has reached a great diffusion in the last years, and is among the others the fastest growing in operating system diffusion. Such a success can be explained by some factors: 
  •  Linux is open source: the kernel sources and the whole operating system sources are available to anyone for free 

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  • Linux is stable and robust like a rock, and it is the most diffused operating system among the Internet Service Providers 

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  • There is a large base of software for Linux 

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  • There is no licensing cost 

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  • It is efficient and scalable 

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  • It is multiplatform 
All the big players in the information technology are going to offer their solution on the Linux platform, beeing them hardware solution incorporating Linux as the operating system of choice or application software. By now, Informix, Oracle, SAP and other software companies are porting or have already ported their major application to the Linux operating system. Among the hardware manufacturer, IBM, DELL, Corel are beginning to offer Linux preinstalled on their systems. 

Prisma Engineering is using Linux from the beginning, and has acquired the experience to install, maintain and develop Linux based solutions. Linux applications developed inside Prisma Engineering comprise both character oriented or GUI applications. We are now working on Linux as an alternative to embedded operating systems and for dedicated solutions. 

Linux Solution for connectivity

By using Linux and the Linux applications we have implemented an Internet access system, which provides to LAN users Internet, email and intranet services, using only one access point and one ISP subscription, with the security of a firewall. 

This system is active and alive the whole time, and provides a continous and reliable service with very little administration effort. 

The advantages are: 

  • Only one modem is needed for all the users 
  • Only one phone line is used 
  • The Internet access cost is lowered 


Linux is very effective for the implementation of  dedicated Internet/Intranet solutions, remote LAN connectivity, email management for the LAN users or for the Internet mail. 

The ISP access can be implemented both with traditional phone lines (POTS) and modem or with ISDN lines; the call to the ISP is done only when required and is brought down when the line is not used. 

Linux can be used in order to implement a private network using the public Internet infrastructures. The typical corporate Local Area Network (LAN) or Wide Area Network (WAN) is an example of a private network. There was a time, when companies could allow their LANs to operate as separate, isolated islands. Each branch office might have its own LAN, with its naming scheme, email system and even its network protocol. 

As more company resources moved to computers, there come a need to interconnect remote offices. Initially, this was done with leased lines, which are expensive  and charged by distance. 

Linux provides a great open source base for implementing Virtual Private Networks (VPNs) in a reliable way, both from the usage and the security point of view. Prisma Engineering is able to provide access solution for Internet access, LAN to LAN interconnect, intranet services and VPNs, using standard transmission technologies like ISDN and Frame Relay.
 
 

Contact us: info@prisma-eng.it