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

The integrated solution for the equipment test in GSM and other telecommunications fields

The Line Server Unit v.3 (LSUv3) belongs to the last generation of high performance test equipment and it is intended to support development teams, system test, acceptance tests and production tests in all telecommunication areas. This equipment is also suitable for a powerful development platform in the field of telecommunications.

The LSUv3 allows to simulate, via the PCM and STM-1 interfaces, most of the functions of GSM, GPRS, EDGE, UMTS Network elements in order to test real pieces of equipment.

The LSUv3 is the latest and more powerful test equipment among the LSU series of systems.
This new system version supports either channelized or unchannelized data based on HDLC, ATM, IP and other special communication protocols used between the Network Elements (e.g. Trau Frames, Pcu Frames, V.110, IuUp etc.). 
Line Server Unit v3
Main features
  • 4 independent cPCI bus segments of 5 slots each connected to the H.110 bus;
  • Huge processing power: up to 5 Single or Dual Pentium III and  8 MPC8260;
  • Distributed 4096x4096 switch matrix;
  • Up to 128 E1/T1 PCM interfaces;
  • Up to 4096 SCC with channel rate from 8 to 2048kbit/sec.;
  • Up to 16 STM-1 interfaces (UTP or Optical connection);
  • Up to 64 Digital Phone interfaces;
  • Up to 16 Multiprotocol interfaces (V.28,V.11,V.35,RS-232,RS-449,RS-485,RS-422);
  • Up to 16 Internal STM-1 links to distribute the load to the available processors.

The LSUV3 can monitor signaling or traffic channels, simulate protocol stacks, generate traffic with packet data or speech, modify data exchanged between two real Network Element, cause single shot or periodical events representing either failures or abnormal conditions, both for physical interfaces and protocols.

The modular architecture of the system offers great scalability in terms of connectivity, processing power and channel number. A set of switching devices allow to distribute flexibly the data flow to the available resources and processors.

 The multi-tasking and multi-user operation based on a Posix compliant operating system allows to use multiple applications concurrently, to handle different interfaces with proper coordination, and/or to share the system among multiple test beds, and/or to integrate it in the corporate network. 
In this way the LSUV3 fulfils for the best the needs of most test environments, from Entity Test and Integration Test to System Test and Load & Stress.

The LSUV3 already supports a growing number of protocol stacks (LAPD,SS7, SCCOP, RLC/MAC,LLC,SNDCP,FRAME RELAY,NETWORK SERVICES,BSSGP,IP,GTP, MAP), and it can be used to test almost all the interfaces between GSM and GPRS Network Elements (Abis, A, Gb, Lb, Gi, B, C, D etc.). 

The LSUV3 was designed to operate in different modes, with the addition of software modules, in order to satisfy the test requirements for different project development stages (white box, integration, load & stress), final and acceptance test activities, and for other application fields.
The implementation of the various protocol strictly adhere to the related recommendation but also provide special primitives for generating abnormal sequence of messages in order to verify the correct behavior of equipment under testing in all circumstances.
The LSU development team is available to design special testing suites for new specific requirements of the customers, or to integrate additional features (e.g. proprietary O&M procedures) in the already existing software packages.

In the following pages you can find a technical description of the equipment, descriptions of the available software modules, and a list of some common applications.


Info: lsu@prisma-eng.it