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Access Navigator - Release 1.8 August 2003 18-73
CLI Language Reference
CLI Command List
The above message indicates that the loopup code was sent and that the Access
Navigator confirms that the far-end is in loopback. If the message ends with “unable to
confirm loopup” there may be a line or equipment problem in the DS1 loop. When
testing is finished, always use the loopdown command to return the far-end equipment
to normal operation.
Example: send ds1 9 niu loopdown
Message: Loopdown signal sent to remote.
Waiting for confirmation.....loopdown confirmed.
The above message indicates that the loopdown code was sent and that the Access
Navigator confirms that no loopback signal is being received from the far-end. If the
message ends with “loopup still present” the far-end equipment is still in loopback
mode.
If the loopup or loopdown code can not be sent, the CLI will display an error message,
as in the following example.
Message: *- unable to set up ds1 because ds1 is reporting an alarm
condition.
Send DS1 Payload Loopup
NOTE:
The DS1 must be set Out of Service, using the set ds1 <n> down
command, before you can use loopbacks or test patterns.
NOTE: Sending an unframed pattern will cause a DS1 Loss of Frame (LOF).
NOTE: For normal operation, the loopback must be disabled (loopdown).
NOTE: This command works with ESF framing and T1.403 FDL, or with
SLC-96/TR-08 framing for Shelf A. For Shelves B, C, D, use the command
Send DS1 CSU Loopup on page 18-62. An Access Bank II using Carrier
Access FDL protocol will ignore this command.
Purpose: Sends an out-of-band (FDL) payload loopup or loopdown code over the Access
Navigator DS1. It is used with other commands and test equipment to verify that the
DS1 signal is reaching far-end CSU equipment, such as the Access Bank II.
Payload loopups can be used with either unframed (line) or framed (payload) patterns
and test commands, including Send DS1 Line <pattern>, Send DS1 Line <pattern>
Test, Send DS1 Payload <pattern>, and Send DS1 Payload <pattern> Test.
When the operator sends a payload loopup command, the Access Navigator
transmits a T1.403 defined out-of-band payload loopback activate code over the FDL
channel of the drop DS1 to the CSU. After the required 5-second integration time, the
CSU should perform a payload loopback, which loops the received DS1 payload back
to the DS1 transmit output (see Figure 18-9).
When testing is complete, send a payload loopdown command.