Technical data

TraverseEdge 2020 Applications and Engineering Guide, Chapter 8: Node Synchronization
Page 8-2 Turin Networks Release 5.0.x
Figure 8-1 DUS Generation in a Network
8.2 Timing Modes
The TE-2020 system timing mode defines the reference it uses for its internal clock. The TE-2020 supports
four different timing modes:
• External Timing (BITS)
• Line Timing
• Loop Timing
• Internal Timing
Each timing mode is described and specified in the following paragraphs.
External Timing (BITS)
External timing from a BITS clock is the preferred synchronization mode. The TE-2020 supports and
defaults to external-timing mode. Two external timing references are accepted by the system.
The TE-2020 system is capable of accommodating DS1 signals that meet the Superframe (SF) format and
Extended Superframe (ESF) format electrical specifications, and pulse density criteria. The system default
expects ESF formatted DS1 signals. The input and output references are wire-wrapped at the rear of the
shelf and may be daisy-chained on up to five shelves. Refer to Figure 8-2