Cisco 2524 - Router - EN Panduan Pemecahan Masalah - Halaman 3
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Halaman Cetak
Chassis/Module
ISDN BRI with integrated
NT1 module
1. The Token Ring activity LED is labelled ACT.
2. The Ethernet link LED is for the Ethernet 10BaseT port only; it does not work with the Ethernet AUI port.
3. The U interface is from the wall jack (telco interface) to the NT1 device.
4. The S/T interface is from the ISDN port on the module to the microprocessor.
Running Diagnostic Tests
If you have the fractional T1/T1 module, you can use external test equipment with the
monitor jack labeled OUT to monitor signals coming into the RJ-48C port, without
interrupting normal data transmission. You can use the monitor jack labeled IN to inject
data, which would interrupt normal data transmission.
Getting Help
For information on technical support, onsite service, and exchange and repair services, refer
to the Cisco Information Packet publication that shipped with your router.
LED
State
Blinking
once per
second
Blinking
eight times
per second
Off
Troubleshooting the Cisco 2524 and Cisco 2525 Routers B-3
Description
The ISDN connection at the U interface is up, and the
internal S/T interface is coming up. If this state
persists, the ISDN port is either not configured or it is
configured incorrectly.
The ISDN connection at the U interface is coming up.
The router is not detecting the ISDN link integrity
signal. An ISDN connection has not been established.
Check the BRI cable connection.
Running Diagnostic Tests