Specifications

Troubleshoot the T3 and T1 Channels
Configuring Serial Interfaces IC-87
Figure 12 CT3IP Local Loopback
Figure 13 shows an example of a network line loopback in which just the data is looped back toward
the network (before the T1 framer).
Figure 13 CT3IP Network Line Loopback
Figure 14 shows an example of a network payload loopback in which just the payload data is looped
back toward the network at the T1 framer.
S5681
HDLC
controllers T1 channels
Controller 1 Channel 1
Channel 2Controller 2
CT3IP
T3 output
MUX
Channel 28Controller 28
S5682
HDLC
controllers T1 channels
Controller 1 Channel 1
Channel 2Controller 2
CT3IP
T3 output
MUX
Channel 28Controller 28