Carrier Access Access Navigator - Manual (Page 375)

Access Navigator - Release 1.8 August 2003 15-33
Diagnostics & Troubleshooting
DS1 Network Loopup
DS1 Network Loopup
Sends an out-of-band (FDL) loopup or loopdown code over the drop DS1. The Network Interface Unit
(NIU), such as a “Smart Jack,” should loop the received DS1 payload back to the DS1 transmit output.
See Figure 15-8.
Note: This command works with ESF framing and T1.403 FDL.
Syntax: send ds1 network <loopup|loopdown>
Figure 15-8. Send DS1 Network Loopup
DS1
Line
Interface
Unit
Framer
Access Navigator
Time Slot
Interchange
Code
Generator
Network
Loopup
Command
FDL
Code
IN
OUT
NIU
Smart Jack
Far End
Network Loopback