The 8:1 Multi-Line System multiplexes eight 64 Kbps Clear channel POTS lines into a digital signal and transports this signal over a single copper twisted pair utilizing low power 2B1Q line coding. These POTS lines are demultiplexed at the end of the DSL using a Remote Terminal (RT) or Remote Terminal Cabinet (RTC). The system transports CLASSSM services from a Central Office (CO) or remote location (i.e. CEV, hut) to the RT/RTC at the customer premise. DSL distances may be extended up to 304,000 ft. using Express, Mid-Span, Local or Back Power options.

• Provides 8 to 1 Digital Pair-Gain (DPG)
• Line-powered (±100V, ±130V or ±190V)
• 2B1Q line coding
• 4TEL, MLT or GR-909 line testing signatures
• Rugged design for use at -40° to +65°C (-40° to +149°F)
• CLASSSM services compatible
• Spectrally compatible with ISDN and other protected services
• V.34 modem support (maximum 33.4 Kbps)
• Micro-Interrupt Enhanced Lightning Protection
• NEBS Level 3 certified

	Central Office Terminal (COT) Provides 8:1 Digital Pair-Gain (DPG) HDSL line coding Mounts in 200 series shelves LED indicators for power, alarms and add/drop synchronization 4TEL, MLT, GR398 or GR-909 signatures NEBS level 3 compliant
	Power Supply Input to power supply is a -48V DC battery Powers up to five COT line cards 2 power supplies required per shelf for 10 DSLs DSL voltages available: ±190V, ±130V or ±100V DC
	2 Line Add/Drop Unit and 2 Line Add/Drop (A/DE) End Unit POWER and SYNC LED indicators Line powered Supports up to 200 ohm drop lengths 23,000 ft. on 19 AWG per span distance Rugged design for use at -40° to 65°C (-40° to +149° F)
	Remote Terminal (RT) - RT8 Drops up to 8 POTS lines Supports up to 200 or 400 ohm drop lengths Line and Express Power configurations Sync LED indicator Extends DSL distance up to 38,000 ft. on 19 AWG Rugged design for use at -40° to 65°C (-40° to +149° F)
	Remote Terminal Power Supply  Local and Back Power configurations require one power supply per DSL Input power from BBU or 115V AC Provides GR-1089 A2 protection Double-wide CS-239 size mechanics
	Alarm Card One card per 200 series shelf Visual and audible status alarms Self test function
	Express Power Card Extends DSL distance Application requires one Express Power Card per COT Line Card Rugged design for use at -40° to 65°C (-40° to +149° F)
	Pole / Wall / Pedestal Mount Repeater & Isolation Repeater Extends DSL distance up to 38,000 ft. on 19 AWG Line powered LED for sync indication Rugged design for use at -40° to 65°C (-40 to +149°F) Weather-tight housing Isolation Repeater required for Back Power configuration
	Remote Terminal (RT) Cabinet - RTC8 & RTC16 Line powered Drops up to 16 POTS lines Supports 200 or 400 ohm drop lengths Meets the environmental stressing sections of GR-487-CORE Houses up to two Mid-Span / Remote Terminal Power Supplies (±130V) per cabinet Extends DSL distance up to 38,000 ft. on 19 AWG 3 options for extended reach applications: - Express Power - Local Power (requires BBU for lifeline service) - Back Power (requires BBU for lifeline service) Rugged design for use at -40° to 65°C (-40° to +149° F) Cable stubs available upon request
	Battery Backup Unit (BBU) 28 amp-hours @ 3.5 amps continuous backup service Meets the environmental stressing sections of GR-487-CORE LED indicators for proper operation, low battery and fault conditions Major and minor alarm reporting capabilities Analog meters for DC voltage and DC amperage status Rugged design for use at -40° to 65°C (-40° to +149° F)
	200 Series Shelf and Baffle 23” DML 201 shelf; maximum 80 lines (13 slots, 10 COT line cards); uses 7” of vertical rack space (four rack units) 19” DML 205 shelf; maximum 56 lines (10 slots, 7 COT line cards); uses 7” of vertical rack space (four rack units) Baffles for 19” and 23” shelves; uses 1.75” of vertical rack space (one rack unit)
	200 Series Fan Tray Fan trays for 19” and 23” shelves; uses 1.75” of vertical rack space (one rack unit) Fan trays feature 172 CFM output and quiet operation