Clocking Subsystem Selection for
E4G-200 and E4G-400
The E4G-200 and E4G-400 have clock sources beyond SyncE. The clock
that drives all of the ports on a switch may be selected from:
- SyncE
- PTP: An optional 1588v2 module
- TDM: An optional module which has multiple T1/E1 interfaces for
TDM/Ethernet interworking
- BITS: Building Integrated Timing Supply. A connector capable of
receiving a timing signal provided by other building equipment
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