AT&T 3550 Switch User Manual


 
COMSPHERE 3550 Series Data Service Units
5-18 February 1995 3550-A2-GB20-10
Table 5-8
(2 of 4)
General Configuration Options
LSD Lead: Std
Next Std Delay FrcOn Prev
Line Signal Detect Lead
(only displayed when Full Mode is enabled). Controls behavior of the LSD lead.
Std Select standard so that the LSD lead goes Off when a control mode idle (CMI) signal is received from the
DDS network, or there is a DDS failure.
Delay Select only if you do not want the DSU to respond to a network alarm condition or CMI signal. When
selected, LSD only goes Off after repeated call attempts fail, and the period of time set in
Tries Time-out
(in the Backup option set) expires. Make sure that
Auto Backup
(in the Backup option set) is enabled.
FrcOn Select to keep LSD on as long as the DSU has power.
DSR FrcOn: Enab
Next Enab Disab Prev
Data Set Ready Forced On
(only displayed when Full Mode is enabled, and a TDM/Flex is not installed). Provides the
ability to override any other options controlling the DSR lead.
Enab Select for DSR to remain ON as long as the device is working, regardless of any tests or network alarms.
Disab Select if DSR is to function as an active lead, reflecting various test and alarm conditions.
SystemStat: Enab
Next Enab Disab Prev
System Status
(only displayed when Full Mode is enabled). Controls the behavior of the DSR lead in response to a No
Signal, Out-of-Service, or Out-of-Frame alarm from the network.
Enab Select if a network alarm is to turn DSR Off.
Disab Select if a Model 3551 DSU with a V.32 DBM that is configured with its
Primary Core
configuration option
set to Yes (DBM option set) is part of your network configuration. When selected, a network alarm will not
affect DSR.
DSR on Tst: Enab
Next Enab Disab Prev
Data Set Ready On in Test
(only displayed when Full Mode is enabled, and a TDM/Flex is not installed). Controls the
behavior of the DSR lead during testing.
Enab Select so that DSR is ON continuously during testing, allowing a DTE that relies on DSR being ON to
send test messages to the DSU.
Disab Select so that DSR is Off during testing.
Circ Assur:Disab
Next Enab Disab Prev
Circuit Assurance
(only displayed when LinkConfig is set to Pt-Pt and Full Mode is enabled). Controls behavior of the
CTS lead in response to a data signal from the network. If CTS Cntrl is set to =RTS or FrcOn, this configuration option is
ignored.
Enab Select to have the DSU turn Off the CTS lead if a control mode idle (CMI) signal is received.
Disab Select if the DSU is to be unaffected by the CMI.
RespondRDL:Disab for MPTC; Enab for all other configurations
Next Enab Disab Prev
Respond to Remote Digital Loopback
(only displayed when Full Mode is enabled). Determines whether the DSU
responds to a V.54 Remote Loopback request.
Enab Select to perform a Digital Loopback.
Disab Select to ignore the Loopback command.