Csu (External) Network Loopback (9623, 9626); Dsu (Internal) Network Loopback (9623, 9626) - Paradyne iMarc SLV Operation Manual

CSU (External) Network Loopback (9623, 9626)

CSU Loopback loops the received signal on the network interface back to the
network. This loopback is an external loopback that is located as close as possible
to the network interface.

DSU (Internal) Network Loopback (9623, 9626)

DSU loopback loops the received signal on the network interface back to the
network without affecting operation of other ports. The signal is looped on the DTE
side of the iMarc unit. This loopback is an internal loopback that is located as close
as possible to the customer interface serving the DTE.
9000-A2-GB33-20
Main Menu→Test→Network Physical Tests→CSU Loopback
DSU
DTE
DTE
Interface
Port
CAUTION:
This test may affect the operation of the PVCs assigned to the network
interface. In addition, IP data sent over the PVC will be disrupted while
this test is active.
Main Menu→Test→Network Physical Tests→DSU Loopback
DSU
DTE
DTE
Interface
Port
CAUTION:
This test may affect the operation of the PVCs assigned to the network
interface. In addition, IP data sent over the PVC will be disrupted while
this test is active.
May 2003
CSU
Aggregate
iMarc Access Unit
CSU
Aggregate
iMarc Access Unit
5. Troubleshooting
DDS
Network
Port
03-17414
DDS
Network
Port
03-17415
5-43