In an SC-LCR group, both the working and protection adapter cards are configured with the same LCR group ID on the same node. The working and protection adapter cards are required to be the same type.
SC-LCR is supported for TDM CES (Cpipes). SC-LCR with TDM access is supported on DS1, E1, and DS0 (64 kb/s) channels.
SC-LCR supports TDM SAP-to-SAP connections when both SAPs are configured as LCR SAPs.
SC-LCR also supports TDM SAP-to-spoke SDP connections over an MPLS network. In this configuration, the far-end connection may or may not be configured for LCR.