Bay Networks BayStack ARN Routers none Instrukcja Obsługi Strona 85

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Operating the ARN
114200 Rev. A 3-7
ISDN BRI LEDs (S/T or U Interfaces)
T
able 3-8 describes the ISDN adapter module LEDs.
DSU/CSU LEDs
T
able 3-9 describes the DSU/CSU adapter module LEDs.
Table 3-8. ISDN BRI LEDs
LED Meaning
S/T Interface
Unlabeled LED Lights when the ARN is using the D-channel.
U Interface
D
(D-channel; 16-KB
Management Channel)
Lights when the ARN is using the D-channel.
DD
(Data Detect)
Lights when the interface detects connection to an external
device (that is, a switch).
B1
(B-Channel #1; 64-KB
Data Channel)
Lights when the ARN is using B-channel #1.
B2
(B-Channel #2; 64-KB
Data Channel)
Lights when the ARN is using B-channel #2.
Table 3-9. DSU/CSU LEDs
LED Meaning
TxD
(Transmit Data)
Lights when the interface transmits data over the network.
RxD
(Receive Data)
Lights when the interface receives data from the network.
CD
(Carrier Detect)
Lights when the interface detects a connection to another
device.
Test Lights when the interface is in test or loopback mode.
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