• Single Type 400 circuit pack that provides the interface between four twisted pairs and one conventional DS3 circuit Adapts automatically to OSP pair tip/ring reversals
• Integral DS3 network interface unit (NIU)
• Climate-hardened for unrestricted deployment in OSP cabinets
• 10W power consumption
• Service reach up to 3.2 kFt (or 5.5 kFt with a repeater) with 450 Ft of coax at each end
• Simple provisioning of DS3 length with a front-panel line build-out (LBO) switch
• Extensive DS3 loopback capabilities
  • Remote FEAC NIU loopback
  • Remote FEAC Line loopback
  • Front-panel Local loopback
  • Craft Port Local or Remote loopback
• Optimized for RT installation
  • Front-panel BNC DS3 connectors
  • Front-panel RJ-45 facility interface connectors (4 OSP pairs)
  • Low power consumption, wide temperature range
• LEDs provide an immediate indication of unit status
  • Unit
  • DS3
  • OSP pairs 1, 2, 3, and 4
• Craft port and TL-1 RS-232 interfaces
• GR-820-CORE DS3 performance monitoring (PM)
• Simple plug-and-play installation and use

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• Simple twisted pair transport of DS3 circuits
  • 4 twisted pairs (OSP or intra-building)
  • Service reach: 3.2 kFt (2.3kFt over twisted pairs, 2 x 450 Ft coax)
  • Repeater capability extends reach to 5.5 kFt
  • Available 1:1 hardware and facility switch-to-protect
  • Integral DS3 NIU plus TL1 network access
  • CO, OSP and locking CPE mountings
  • Remote Span Powering capable

• Fast Re-deployment
  • Moves
  • Disconnects

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Performance Management

• PM parameters accumulated over 15-minute and 1-day periods
• History available at 15-minute periods for the last 24 hours and 1-day periods for the last 7 days

The following performance data is collected for the DS3 interfaces:

• Failure counter
• Protection switching counter (for the regular DS3 interface only)
• Code violations–line (for the regular DS3 interface only)
• Errored seconds–line
• Severely errored seconds–line
• Loss of signal seconds–line
• Code violations P-parity–path
• Code violations CP-parity–path
• Errored seconds P-parity–path
• Errored seconds CP-parity–path
• Severely errored seconds P-parity–path
• Severely errored seconds CP-parity–path

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• Unavailable seconds P-parity–path
• Unavailable seconds CP-parity–path
• Alarm indication signal seconds–path
• Severely errored frame/alarm indication signal seconds P parity–path

The following performance data is collected for the OSP interfaces:

• Errored seconds
• Severely errored seconds
• Loss of signal seconds
• Failure counter