Circuit Emulation (Cpipe) Services
Page 124 7210 SAS M Services Guide
TDM Pseudowire Encapsulation
TDM circuits are MPLS-encapsulated as per RFC 4533 (SAToP) and RFC 5086 (CESoPSN), see 
figures below:
Figure 16: SAToP MPLS Encapsulation
Figure 17: CESoPSN MPLS Encapsulation
Figure 18 shows the format of the CESoPSN TDM payload (with and without CAS) for packets 
carrying trunk-specific n   64 kb/s service. In CESoPSN, the payload size is dependent on the 
number of timeslots used.