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Configuration Options
4-20
9820-A2-GB20-20
June 2000
Table 4-5. Network Data Port Physical Interface Options (2 of 2)
Monitor DSR
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies whether the state of the DCE Ready (DSR) circuit on the network data port
will be used to determine when valid data communication is possible with the unit.
When this condition is detected, an alarm is generated, LMI is declared down, and no
further transfer of frame relay data can occur on this interface.
Display Conditions
– This option does not appear when when Port Type is set to
X.21. The signal is assumed to be asserted.
Enable – Interchange circuit CC (ITU/CCITT 107) – DSR is monitored to determine
when valid data is being sent from the DCE.
Disable – DSR is not monitored. DSR is assumed to be asserted and data is
transmitted, regardless of the actual state of the lead.
Monitor CTS
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies whether the state of the Clear to Send (CTS) circuit on the network data port
will be used to determine when valid data communication is possible with the unit.
When this condition is detected, an alarm is generated, LMI is declared down, and no
further transfer of frame relay data can occur on this interface.
Display Conditions
– This option does not appear for Model 9820-45M, or when Port
Type is set to X.21. The signal is assumed to be asserted.
Enable – Interchange circuit CB (ITU/CCITT 106) – CTS is monitored to determine
whether data should be transmitted to the DCE.
Disable – CTS is not monitored. CTS is assumed to be asserted and data is
transmitted, regardless of the actual state of the lead.
Monitor RLSD
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies whether the state of the Received Line Signal Detector (RLSD) circuit on
the network data port will be used to determine when valid data communication is
possible with the unit. When this condition is detected, an alarm is generated, LMI is
declared down, and no further transfer of frame relay data can occur on this interface.
Display Conditions
– This option does not appear for Model 9820-45M. If Port Type is
set to X.21, the Indication interchange circuit is monitored instead of RLSD.
Enable – Interchange circuit CF (ITU/CCITT 109) – RLSD is monitored to determine
when valid data communication is possible with the DCE.
Disable – RLSD is not monitored. RLSD is assumed to be asserted and data is
transmitted, regardless of the actual state of the lead.