ADTRAN TSU 120e user manual Internal Timing, Internal Clock Source

Chapter 5. Configuration Menu

Internal Timing

The TSU 120 is the source of timing. The TSU 120 is configured to use its own internal oscillator as the source of timing. Appli- cations include private line driver circuits where one end is set to network and the other to internal. See Figure 5-5.

T1 XMIT

( D S 1 )

T1 Receive

		OSC
Network
Interface			( O P T I O N )
		Nx56/64	DSX-1
	DTE CLOCK

DTEPBX

Figure 5-5. Internal Clock Source

61202129L1-1 TSU 120 User Manual 5-9