The switch boots up in the E1 hierarchy by default (the TDM ports are configured to operate in E1 mode). For T1 mode of operation, the hierarchy must be configured, followed by the save and reboot of the switch. After reboot, the switch boots up in T1 hierarchy based on the configuration saved and the TDM ports operate in T1 mode.
Other TDM configurations can be performed after setting up the switch in the correct hierarchy.
Note
For a TDM line where TDM services and/or CES pseudowires have been configured, and the hierarchy need to be changed, we recommend that you first remove or reset all of the CES pseudowires, TDM services, and TDM line configurations before you configure the TDM hierarchy.
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