Figure 5-5. Base Ds-1 Timed Clock Source - ADTRAN TDU 120e User Manual

Chapter 5. Configuration Menu
T1 Transmit
NETWORK
INTERFACE
T1 Receive
5-8
Base DS-1
The PBX is the source of timing. The TDU 120e uses
the clock derived by the Base DS-1 interface for
transmission timing. See Figure 5-5.
INTERNAL
OSCILLATOR
BASE Nx56/64
DTE CLOCK

Figure 5-5. Base DS-1 Timed Clock Source

TDU 120e User Manual
SECONDARY
INTERFACE
OPTION CARD
BASE DS-1
PBX
61202156L2-1