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The DM705-SUB is an E1/STM-1* multiplexer for 19’’ racks with 4U (units height). Its mounting brackets can be adjusted in 6 different positions and can also be configured in a wall mounting option.Totally modular, may received up to 8 tributaries interfaces, 2 high speed cards, 2 redundant power supply units and 2 CPUs. All modules are hot swappable.The DM705-SUB can be equipped with one of the three available CPU models (CPU32, CPU64 and CPU128).  CPU:

• DM705-Sub can operate with one or two CPU interfaces and can enable redundant operation*.
• 64kbit/s timeslot cross connection for data coming from any interface.

Slots:

• There are 10 slots for interface cards. Two of those can operate at 155Mbit/s (HS slots).
• All slots have frontal connections.

Possible Synchronism Sources:

• Internal clock generated by the multiplexer;
• 2048kHz external clock with BNC input interface directly on the CPU card;
• Recovery clock from STM-1*, E3*, E1, G.shdsl or V.35 interfaces.

Power Supply Units:

• Supports AC inputs (93 to 250VAC) and DC inputs (36 to 72VDC), with automatic selection;
• Redundant operation when using 2 power supply units;
• Hot swap power supply units.

External Alarms (NA/NF dry contact output on the front panel):

• DM705-CPU128 - Three external alarm inputs and one output;
• DM705 CPU64 – Three external alarm inputs and one output;
• DM705 CPU32 – one external output.

Common Applications:

• SDH* network access: 64kbit/s timeslot cross connection for data coming from the STM-1 interface.
• Cross connection in any port (Grooming): consolidation of many sub used channels in one single channel. Data from E1, FO, DSL, MBB, V.35D, G.703 64kbit/s, voice cards FXO / FXS / E&M, RS232, IP and Ethernet ports may be mapped into any timeslot of any port. Thus, any port may work as aggregate, optimizing its usage for each application. Both CPU64 and CPU128 allow tributary concentration in 2Mbit/s channels mapped to the STM-1 aggregate.
• CAS cross connection, generated from voice, FO and E1 interface mapping. DSL, STM-1 (2Mbit/s channels), FO HW3 (2Mbit/s channels) and structured V.35 interfaces are also capable of CAS* cross connecting.