IE-iMcV-T1-Mux/4+Ethernet
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ABOUT T H E IE-IMCV-T1-MUX/4+ETHERNET
The IE-iMcV-T1-Mux/4 + Ethernet is a media converter that transports four
independent T1 lines over an existing single (or dual, “1+1”) standard fiber
optic line operating at an effective rate of 155Mbps. One serial link (RS-232)
and one Ethernet (10/100BaseT) connection are multiplexed onto the fiber
link(s). Each of these communication channels is transported end-to-end at full
wire speed with very low latency. A maximum packet size of up to 1916 bytes
is supported on the Ethernet port.
The serial link can be used for extending an independent RS-232 interface to
the remote POP location for use in managing or controlling other devices at
the POP and supports any data rate up to 120Kbps. In addition, each unit
supports an RS-232 console port for local configuration by technical support
personnel. The console port is used for end-to-end system management, fault
detection/isolation and system diagnostics.
The IE-iMcV-T1-Mux/4 + Ethernet provides fault indications on the T1 and
fiber links resulting from real-time active faults. The equipment detects both T1
and fiber LOS events as well as degraded T1 or fiber lines. The unit will
automatically forward AIS signaling to the remote unit after detecting a LOS
(Loss Of Signal) condition on any incoming T1 line. Severe receive optical link
failures will result in the automatic generation of AIS signaling onto the T1
lines connected to the unit receiving the corrupted optical signal.
In addition, Code Violation (CV) errors are detected on all incoming T1 lines
and BER calculations for the optical line are constantly being performed by
circuitry within the unit's optical receiver. Error conditions are displayed on the
unit’s front panel LED indicators and reported to system management
software (if equipped) where more detailed error information can be displayed
on the user’s Graphical User Interface (GUI).
Modules equipped with 1+1 fiber redundancy can benefit from the enhanced
reliability of a protected fiber link and the system’s ability to automatically
switch to the “best” fiber line should one line become impaired or fail. This
automatic switchover capability is designed to occur rapidly (<50
milliseconds), minimizing data loss and system down time. In addition,
automatic switchover can be overridden, allowing the end-user to force the
unit to receive on a specific optical line if desired to support periodic
maintenance.
