Cross Connections - Alcatel-Lucent 1643 AMS User's Operation Manual

Traffic provisioning

Cross Connections

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A cross-connection is made to create a path from one point to another point in the
network. A transmission plan is made to provision paths in a network and according to
this plan cross connections can be made in each network element involved in the path.
The Cross Connect Unit connects the signals at VC-4, VC-3, or VC-12 level between
the termination points of the line ports or tributary ports.
Cross connect units
The 1643 AM or 1643 AMS network element is an Add Drop Multiplexer. Cross
connections can be made between the two line ports and between a line port and a
tributary port. It is also possible to make a cross-connection with SNC/N protection.
Diagram
The following diagrams show the transmission architecture for the 1643 AM or 1643
AMS network element for STM-1 interfaces. The 1643 AM or 1643 AMS network
element supports STM-4 interfaces as well.
Connection points
A cross-connection is made between termination points (TP). On the tributary units a
VC-12 termination point is selected. On the line units, the TU number inside the VC-4
must be selected. The TU number consists of three numbers:
• k: the number of the TUG-3 inside the VC-4
• l: the number of the TUG-2 inside the TUG-3
• m: the TU-12 number inside the TUG-2.
Example:
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8-8 Alcatel-Lucent - Proprietary
See notice on first page
365-312-807R7.2
Issue 4, May 2007