Hitachi Energy
Channel (TS) selection
Once routed, the Circuit knows on which hops the end-to-end signals are multiplexed. One more step is required to definitely have the signal going from A to Z which means from NE82 to NE80.
A dedicated Time Slot TS has to be selected in all Trails of the Path.
There are two possibilities
Automatic channel selection based on residual capacity of each Trail, or
Manual Section.
* 
Please note: 
It is recommended to use the automatic channel selection process.
The routed Circuit
To allow the automatic or manual channel allocation, right-click on the Working Path’s “LC” entry as shown in the screenshot above. This calls the context menus:
 
Working Path “LC” Context Menu
Automatic Channel Selection
Selects a channel automatically.
Allows the FOXMAN-UN NP to search for all possible hops having enough capacity for the service to be routed.
Manual Channel Selection
Calls the Select Possible Channels dialog, which displays a list of all possible channels to manually choose from.
Clear Channels
Clear the channels from the path elements.