COMSPHERE 3600 Series Data Service Units
5-10 March 1999 3610-A2-GB41-60
Subnetwork Health and Status
Subnetwork Health and Status (Subn) provides status
information from a DSU’s subnetwork (all DSUs and
DBMs assigned to that DSU’s active poll list). The
downstream network addresses and current statuses are
listed. Use the F1 and F2 keys to page through the
tributary addresses.
To access the Subnetwork Health and Status from the
top-level menu, make the following selections:
•Local (F1), or Remot (F2) and Address
•Stat
•H/S
•Subn
Results
Status messages are updated periodically. If no
downstream DSU’s are being monitored, No PList is
displayed instead of the address and status for an active
poll list member. For a list of status messages and their
meanings, see Appendix C of the COMSPHERE
3600 Series Data Service Units, Models 3610 and 3611,
Operator’s Guide.

DTE Status

The DTE Status displays a snapshot of the local or
remote DSU-DBM’s external DTE interface status. Ten
different signal statuses are reported.
To access the DTE status report from the top-level
menu, make the following selections:
•Local (F1), or Remot (F2) and Address
•Stat
•DTE
NOTE

If there is only one port

, the DTE
Status screen is displayed.

If

there is more than one port

, the
Port screen is displayed prior to
the DTE Status screen.

If using

FEP port sharing

, select the first
port in the digital-sharing group to
obtain DTE Status.
For TDM, MCMP, or Bridge mode, the following
additional menu appears:
F1
Port Number: 1
Displ
F2 F3
Use the F1 and F2 keys to display the port number of
your choice, then press the F3 key to have your choice
accepted.
Results
The DTE interface statuses are displayed in sets. Use
the or key to scroll the next set of lead statuses
into view. Table 5-3 translates the status codes.
The following is displayed for the selected
DSU-TDM’s or DSU-MCMP’s external DTE interface.
The activity shown may be different from the states
displayed by the DSU’s LED indicators, which sometimes
reflect the internal states of the interface circuits. In this
example, Port 1 was designated.
F1
Prt01 DTE Stats:
TXD RXD DSR
F2 F3
If only one port is active, the DTE Status screen is
displayed. If more than one port is active, the Port screen
is displayed prior to the DTE Status screen.
Table 5-3
DTE Lead Status Codes
Code Lead Status
ON/SPACE (above text line)
Off/MARK (below text line)
At least one transition between
Off/MARK and ON/SPACE has
been detected during the
monitoring window.