COMSPHERE DualFlow Data Service Units
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| DSU Port Configuration Options |
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LSD Lead: Std |
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Next | Std | Delay | FrcOn | Prev |
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Line Signal Detect Lead. Controls behavior of the Line Signal Detect lead. | ||||
Std | Ð LSD lead goes Off in response to a control mode idle (CMI) signal from the DDS network or DDS failure. | |||
Delay | Ð LSD does not go Off in response to a network alarm condition or CMI. LSD goes Off only after a | |||
| successful backup connection is established. | |||
FrcOn | Ð Keeps LSD on as long as the DSU has power. | |||
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DSR FrcOn: Enab |
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Next | Enab | Disab | Prev |
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Data Set Ready Forced On. Provides the ability to override any other options controlling the Data Set Ready lead.
Enab | Ð | DSR remains ON as long as the device is working, regardless of tests and network alarms. | ||
Disab | Ð | DSR functions as an active lead reflecting various test and alarm conditions and other options. | ||
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SystemStat: Enab |
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Next | Enab | Disab | Prev | |
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System Status. Controls the behavior of the DSR lead in response to a No Signal,
Enab | Ð Network alarm turns Off DSR. |
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Disab | Ð Network alarm does not affect DSR. |
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DSR on Tst: Enab |
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Next | Enab | Disab | Prev |
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Data Set Ready On in Test. Controls the behavior of the DSR lead during testing. |
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Enab | Ð DSR is ON continuously during testing, allowing a DTE that relies on DSR being ON to send test |
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Disab | Ð DSR is Off during testing. |
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Circ Assur:Disab |
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Next | Enab | Disab | Prev |
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Circuit Assurance. Controls behavior of the CTS lead in response to a data signal from the network. If CTS Cntrl is set to RTS and RTS Cntrl is set to FrcOn, this configuration option is ignored.
A DDS Facility Alarm condition turns Off the CTS lead, regardless of the Circuit Assurance setting.
Enab | Ð | The DSU will turn Off the CTS lead if the DSU receives control mode idle (CMI) from the network. | ||
Disab | Ð | The DSU is not affected by the receipt of CMI. | ||
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RespondRDL:Disab |
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Next | Enab | Disab | Prev | |
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Respond to Remote Digital Loopback. Determines whether the DSU responds to a V.54 Remote Loopback request.
Enab | Ð | Performs a Digital Loopback. |
Disab | Ð | Ignores the Loopback command. |
December 1996 |
