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Chapter 5. Configuration Menu
61202156L2-1 TDU 120e User Manual 5-7
Network Timed
The network is the source of timing. The received
data clocking is looped back to the network, where it
is used to determine the transmission timing. This
option is also referred to as loop timed as the trans-
mission clock is derived from the received clock. See
Figure 5-4.
Figure 5-4. Network Timed Clock Source
INTERNAL
OSCILLATOR
SECONDARY
INTERFACE
OPTION CARD
NETWORK
INTERFACE
BASE Nx56/64 BASE DS-1
PBX
DTE CLOCK
T1 Transmit
T1 Receive