CARIN-MX1 is a digital switching system based on SPC (Stored Program Control) and PCM/TDM techniques, capturing full capabilities of microprocessor power and specially designed to be in accordance with ISDN technology.

CARIN-MX1 demonstrates a wide range of network applications including PABX, rural, local and local/tandem exchanges. Flexibility and ease of expansion are two major factors that prove CARIN-MX1 to be the appropriate solution for telecom network planning along with the most convenient approach to upgrade the system from an initial capacity of 200 ports to a maximum of 6720 ports.

This results in an almost linear relation between the switching capacity and system cost, leaving the telecom planners free of future problems regarding system replacement instead of expanding it.

CARIN-MX1 is designed and manufactured in a full modular structure in all mechanical, electrical power, electronic hardware and system software aspects. This provides the user with the most effective approach for system configuration and expansion. This modularity leads the expansion process to consist of adding the new units only, requiring the least modifications in existing units and involving no structural modifications.

CARIN-MX1 uses a distributed microprocessor network to process the system data and to control all system elements and data communications throughout the system. The distributed control model optimizes processing load over individual microprocessors. Each processor stage handles its own processing tasks while exchanging results with lower/higher stages in the processor network.

Each CARIN-MX1 cabinet is capable of providing up to 840 ports, which may be a combination of ordinary DP (Dial Pulse) or DTMF (Dual-Tone Multi-Frequency) analog subscribers, digital feature phones (key-phones), attendant consoles, coin-box sets, lines to other PBX systems, paging and ACR devices, modems or fax machines, analog trunks (C.O., E&M, DID/DOD, R/D,) or CEPT-E1 digital trunks. In maximum configuration, a CARIN-MX1 consists of eight cabinets resulting in a maximum capacity of 6720 ports

CARIN-MX1 offers a variety of line and trunk interfaces to ensure full coverage of all types of subscribers and trunks operating in a telecommunication network. A few of the subscriber line interfaces include DP/DTMF standard telephone sets, Coin-Box sets, Attendant consoles, Fax machines, standard Modems, ACR & paging devices, digital feature-phones (key phones) and ISDN-phones. CARIN-MX1 trunk interfaces include all necessary hardware to connect to C.O., E&M,R/D, Loop Dial DID/DOD analog trunks, and CEPT-E1 2Mb/s digital trunks. On each physical interface, various signaling protocols from E&M up to CCS7 and V5.2 are supported to ensure enough flexibility to establish a successful interface. Other PCI products such as built-in PCM4 and PCM30 pair gains or CARIN-HDSL modems may also be combined with a basic CARIN-MX1 exchange to achieve more power and flexibility in subscriber/trunk support and in O&M efficiency.

CARIN-MX1 provides subscribers with a full range of features and facilities in order to let them use system resources and capabilities in the most effective way. A sophisticated list of advanced and yet easy to use subscriber features turns out CARIN-MX1 to be the best choice for PABX/Rural/Local switching system solutions.

CARIN-MX1 is equipped with an O&M LAN, to help the O&M staff carry out the system Operation and Maintenance jobs in the most efficient way. O&M applications run smoothly over a Windows-2000 Advanced Server based network to ensure consistence and flexibility. Users may access system resources and execute O&M and Billing jobs on-site or remotely via a standard TCP/IP connection.

To achieve the highest grade of operation reliability and resource availability, all important elements of a CARIN-MX1 system such as the PCM SN (Switching Network), local and global processors, DC power supplies and Ring signal generators operate with a 1+1 redundancy and in a hot-standby manner.

In case of a faulty condition, the standby module automatically replaces the failed module without any system or call interrupts. For maximum availability, the switching networks used in CARIN-MX1 are arranged to be non-blocking. Inter-Unit connections involve a negligible blocking factor (10E-5).


» General Specifications

• Full conformity with ITU-T technical recommendations.
• Using TDM/PCM techniques.
• Distributed control based on SPC (Stored Program Control) techniques utilizing multi-   layered processor stages.
• Modularity in hardware and software design.
• Automatic hardware/software self-diagnosis.
• Universal slots for analog/digital line/trunk interfaces.
• Easy system support due to low variety in system cards.
• Signaling flexibility and network adaptation.
• Layered control of communication between global and local control units.
• Non-blocking, modular, full available global and local switching networks.
• 1+1 redundancy and hot-standby operation in all major modules such as local and global switching networks, local and global processors, DC power and ring generators, providing safe and non-interrupted faulty module replacements.
• Easy installation in rooms or standard containers.
• Low power consumption.
• Easy expansion from 200 to 6720 ports.
• Up to 20,000 BHCA in a local unit.
• Configurable to operate as rural, local, tandem exchange, PABX and remote switch unit.
• Layered inter-cabinet communications via 64Kb/s channels.
• Remote cabinet support via 2Mb/s CEPT-E1 G.703 links.
• Client/Server, TCP/IP based O&M applications running over an O&M LAN.
• Remote connection of accessories (O&M, Billing, Attendants, MAP) via 2Mb/s CEPT-E1 G.703 links providing system management and supervision from a centralized O&M site.
• Several storage media, to save system database, charging records and other dynamic data, including SRAM, DRAM, EPROM, FLASH, FDD, and HDD.
• Extensive set of subscriber features and facilities to optimize use of system/network resources.
• Malicious call tracing service on local or trunk calls.
• Traffic measurements and detailed traffic reports.
• Prerecorded announcements depending on port status. (e.g. Invalid dialing, Calling or Called party blocked)
• Equipped with optional CARIN-PA1 PCM-Analyzer to analyze, test and perform all necessary measurements on PCM-E1 links, with capability to transfer analysis results to a PC.
• Equipped with optional CARIN-LT1 Automatic Line Tester to analyze, test and perform all necessary measurements on subscriber lines (both exchange and cable network sides).
• Equipped with optional E&M Analog Trunk Tester to analyze, test and perform all necessary measurements on E&M analog trunks.
• CCS-No.7 signaling according to ITU-T recommendations Q.702, Q.721-724, Q.761-764 and Q.703.
• ISDN BRI/PRI according to ITU-T I.430, I.431, Q.921, Q.931
• V5.2 Access Network interface.
• SDH/PDH Optical Interface Integration.
• Built-in/Standalone 64Kb/s PCM4, PCM8 and PCM30 DSLs.
• Feature-Phone Digital Subscribers.
• Multi-stage protection in MDF and subscriber PBA’s using gas-tubes, PTCs, Varistors and fail safe mechanisms in order to protect hardware against over voltage, over current, sparks and instantaneous electric shocks.