DS1
Use the DS1 subtab to view DS3XM-6 or DS3XM-12 DS1 loopback information.
 
Port
Displays the port number.
Derived State
Displays the DS1 state that is derived from the DS3 port state as well as the corresponding circuit state for the DS1.
Service State
Shows the autonomously generated state that gives the overall condition of the port. Service states appear in the format: Primary State-Primary State Qualifier, Secondary State. For additional state information, see States.
Loopback Type
Configures a port for a terminal loopback (Inward), ESF line, ESF payload, SF in-band, or DS1 terminal loopback; or clears the current loopback (none).
Send Code
(Only applies to out-of-service ports configured for CBIT framing) Sets the code to send:
FEAC Line Loop Code—Inserts a line loop activate far-end alarm code (FEAC) in the CBIT overhead transmitting to the connected facility (line). This code initiates a loopback from the facility to the ONS 15454.
Line Loopback (DS3XM-12 only)—Inserts ESF facility data link (FDL) line loopback code.
Payload Loopback (DS3XM-12 only)—Inserts ESF FDL payload loopback code.
No Code—(Default) Sends a line-loop-deactivate FEAC code to the connected equipment, which will remove the loopback. You can also insert a FEAC for the 28 individual DS-1 circuits multiplexed into a DS-3 circuit.
Send AIS on Facility Loopback
When checked, sends an alarm indication signal when a facility loopback occurs.
Send AIS on Terminal Loopback
When checked, sends an alarm indication signal when a terminal loopback occurs.
Apply
Applies changes made to the fields in the tab.
Reset
Cancels any changes to the tab and returns the fields to their last-saved settings.
Help
Displays context-sensitive help.

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