Secondary Timing; Figure 5-6. Secondary Timing - ADTRAN TSU 120 User Manual

Chapter 5. Configuration Menu

Secondary Timing

The secondary interface is the source of timing. The TSU 120
uses the clock derived by the secondary interface for transmis-
sion timing and the receive signal timing. See Figure 5-6.
T1 XMIT
Network
( D S 1 )
Interface
T1 Receive
5-10
Either a DSX-1 Option Module or a Drop and Insert Option
Module must be installed in the TSU 120 for this mode to func-
tion.
OSC
(NI)
Nx56/64
DTE CLOCK
DTE

Figure 5-6. Secondary Timing

TSU 120 User Manual
Secondary
Interface
(SI)
(OPT IO N )
DSX
PBX
(IO PB)
PBX
61202129L1-1