nbsOtnohTtiEntry
1.3.6.1.4.1.629.224.1.1.1
Trail Trace Identifier (TTI) values for a particular interface.
Per ITU-T G.709, a TTI has 64 bytes; the first 16 contain the
Source Access Point Identifer (SAPI), the next 16 contain the
Destination Access Point Identifer (SAPI), and the final 32
contain an Operator Specific value.
For the SAPI and DAPI, the first byte is all zero, and the other
fifteen are seven-bit International Reference Alphabet (IRA)
characters; ACSII is the USA variant. There is a three character
international segment field followed by a twelve character
national segment field, which consists of two subfields: the
ITU carrier code (ICC) and a unique access point code (UAPC).