EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 197)

SONET Tabs
SONET/SDH Application 185
Line OH TX/RX (SONET)
³
S1/Z1
S1: Synchronization Status (STS-1 #1 of an electrical or OC-N signal)
Z1: Growth (STS-1 #2, STS-1 #3, up to STS-1 #N of a OC-N (N>3)
signal)
³
M0 or M1/Z2
M0: REI-L (STS-1 #1 of an STS-1e signal; STS-1 #4 of OC-192 signal)
M1: REI-L (STS-1 #3 of STS-3e or OC-3 signal; STS-1 #7 of an
OC-12/OC-48/OC-192 signal)
Z2: Growth (STS-1 #1 up to STS-1 #48 except for timeslots used by M0
and M1).
Undefined “--” for all other timeslots not covered by M0, M1, and Z2.
³
E2: Orderwire