Harris Intraplex STL-160 Series, Installation & Operation Manual

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4 – Setup & Configuration ACS-160 Series & STL-160 Series T1 Multiplexer Installation & Operation
Version 2.11, August 2011
Harris Corporation 4-15
Intraplex Products
Figure 4-8. Point-to-Point System
Externally Timed from One End, Not Synchronized to Network
4.4.5 Synchronized T1 Systems
Multiple ACS-160 Series systems can be synchronized by deriving their timing from the same timing
source. One way to accomplish this synchronization is to create a daisy-chain configuration with the
external timing outputs and inputs of several head-end terminal multiplexers (Figure 3-9). Multiple
ACS-160 Series systems loop-timed to the same network are also synchronized to each other and to
the network. T1 systems are synchronized to prevent buffer overflows or underflows, generally called
“slips,” in these types of network switching systems:
● Digital central offices
● PBXs
● Digital cross-connect systems