Table 21-1 Ssm Generation 1 Message Set; Table 21-2 Ssm Generation 2 Message Set; Synchronization Status Messaging - Cisco ONS 15454 DWDM Installation And Operation Manual

21.3 Synchronization Status Messaging

Table 21-1
Message
ST2
ST3
SMC
ST4
DUS
RES
Table 21-2
Message
PRS
STU
ST2
TNC
ST3E
ST3
SMC
ST4
DUS
RES
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
21-4
SSM Generation 1 Message Set (continued)
Quality Description
3 Stratum 2
4 Stratum 3
5 SONET minimum clock
6 Stratum 4
7 Do not use for timing synchronization
— Reserved; quality level set by user
SSM Generation 2 Message Set
Quality Description
1 Primary reference source—Stratum 1
2 Synchronization traceability unknown
3 Stratum 2
4 Transit node clock
5 Stratum 3E
6 Stratum 3
7 SONET minimum clock
8 Stratum 4
9 Do not use for timing synchronization
— Reserved; quality level set by user
Chapter 21 Timing Reference
August 2005