ADTRAN Cable T1 ESF CSU ACE - Manual (Page 40)

Chapter 4. Operation
40 T1 ESF CSU Rackmount User Manual 61202066L1-1B
Figure 4-9. Local Line Loopback
Figure 4-10. Payload Loopback
NI CSU
NETWORK
NETWORK
DTE
DTE INTF
T1 ESF CSU RM
LINE
INTERFACE FRAMING
DEVICE
NI CSU
NETWORK
PAYLOAD LB
DTE
DTE INTF
T1 ESF CSU RM
LINE
INTERFACE FRAMING
DEVICE