ADTRAN TSU 120, Руководство пользователя

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Chapter 1. Introduction
61200.129L1-1 TSU 120 User Manual
13
DTE Timed
The DTE is the source of timing. The TSU 120 uses the
incoming DTE clock to determine the transmission
timing. This is typically used in applications where it
is necessary to have the DTE as the primary clock
source, (such as limited distance line drivers). See
Figure 1-6.
The DTE source timing is restricted from use when a
secondary interface is used at the same time.
DTE
OSC
( O P T I O N )
Network
Interface
T1 XMIT
T1 Receive
( D S 1 )
Nx56/64
DTE CLOCK
DSX-1
PBX
Figure 1-6
DTE Clock Source