| Service interface unit |
Packet services:
Receives/Transmits TDM E1/channelized STM-1 signals.
Receives/Transmits ATM/inverse multiplexing over ATM (IMA) E1 signals.
Receives/Transmits FE/GE/10GE signals.
TDM services:
Receives/Transmits E1/T1/E3/T3 signals.
Receives/Transmits STM-1/4/16 signals.
Receives/Transmits FE/GE signals.
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| TDM cross-connect unit |
Provides the cross-connect function and grooms TDM services.
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| Packet switching unit |
Processes Ethernet services and forwards packets.
Processes MPLS labels and forwards packets.
Processes PW labels and forwards packets.
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| System control and communication unit |
Performs system communication and control.
Configures and manages the system.
Collects alarms and monitors performance.
Processes overhead bytes.
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| Clock unit |
Traces clock sources and provides clock signals for the system.
Provides the input/output port for external clocks.
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| Auxiliary interface unit |
Provides the orderwire phone port.
Provides the synchronous/asynchronous data port.
Provides the external alarm input/output port.
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| Power supply unit |
Connects to -48 V/-60 V DC power supplies.
Connects to 110 V to 220 V AC power supplies.
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| Fan unit |
Cools the NE.
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