East Coast Datacom Nx8- Dual Composite MUX High-Speed 16-Port TDM Multiplexer, Operation Manual

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Figure 2 Point-to-point Link as Sub-multiplexer
1.2 Planning
The network administrator must determine how the Nx8-DualMUX units will work in the
network and understand the applications that will utilize each of the available channels. Some
of this work is made easier by the fact that link bandwidth requirements are easily determined
by summing the bandwidth needs of each channel port that is planned to be used, and
adding the fixed overhead. Inband control signal transport should also be considered when
needed, as some bandwidth is required to support this function.
Additionally, the network administrator should have in mind other considerations that are
factors in planning for the installation. Some of these are:
1) Power requirements, including redundancy
2) Ventilation and cooling
3) Rack space requirements
4) Cabling & distances between equipment
5) Ease of access for maintenance