To modify the output AMI configuration parameters:
In the Line Settings pane, select YES or NO in the Enabled drop-down boxes to enable or disable each output.
Select a line compensation in the Compensation drop-down boxes. This is the length of the cable used to connect the OT-21 to the Network Element being synchronized
In the Group Settings pane, make the appropriate selections in the drop-down boxes. The selections are described in the table below.
Field / Section |
Description |
Group Settings |
|
Framing |
Select ESF, D4, CAS, or CCS. |
Zero Suppression |
Set to ON or OFF to suppress or not suppress leading zeros. |
CRC |
Set to ON or OFF to check or not check if data is correctly received. |
SSM |
Set to ON or OFF for reading or ignoring SSM messages. |
Bit |
Sets the E1 bit position to 4,5,6,7, or 8. |
AIS |
Set to ON or OFF to turn on or off the Alarm Indication Signal for degraded frequency.
Alarm Indication Signaling is a code transmitted downstream in a digital network indicating an upstream failure has been detected and alarmed. |
Click OK to accept changes and return to the Output AMI Configuration window, or Cancel to return to the Output AMI Configuration window without saving changes.
Note: SSM and Bit can only be set if Framing is set to E1 (CAS/CCS). If Framing is set to ESF or D4, both the SSM and Bit fields will be shaded and uneditable.