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DS-PCM/P Digital Subscriber Pair Gain Platform

One of the major constraints in telecommunication network infrastructure is the inability of copper-cable networks to cope with the increased demand for new telephone subscribers. This phenomenon is even more emphasized in recent years by the rapidly growing number of Internet subscribers, which is generating an enormous demand for ISDN subscriber access capacity.

The DS-PCM/P system provides an advanced digital subscriber platform, which alleviates the problem of the limited copper-cable network capacity by allowing several POTS and ISDN-BRA links to be multiplexed and transmitted over a single copper pair cable.

The system is offered in various configurations covering any customer's requirements. Minimal investments, enhanced versatility, very fast servicing and digital transmission quality are the main benefits of this solution.

Features

• Advanced SDSL technology with 16-level TC-PAM line coding
• Fully compliant with the ETSI standards, including also all ETSI test loops
• Four basic configurations:
  • 2 U-Lines and 6 POTS Lines
  • 11 POTS Lines
  • 5 U-Lines
  • 4 POTS Lines
• Enhanced versatility using plug-in modules architecture
• Operating range up to 3.54km over 0.4mm in realistic noisy conditions, when supporting 5 U lines
• Transparent signaling transfer
• Improved POTS line characteristics
• 48V Open Loop volt
• 25mA Loop Current at 900 Ohm load
• 40Vrms minimum ringing voltage at the subscriber telephone set with 5REN load after 500 Ohm loop
• 2.2 W power feeding for ISDN lines with 500 Ohm line resistance
• Remote power feeding of ±165V and 60mA current limit with full protection
• Network management
• Remote unit and subscriber Loop test facilities