Cisco 2525 Manuale Utente Scaricare il pdf (Pagina 3)

Troubleshooting the Cisco 2524 and Cisco 2525 Routers B-3

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.

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.

ISDN BRI with integrated

NT1 module

Blinking

once per

second

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.

Blinking

eight times

per second

The ISDN connection at the U interface is coming up.

Off The router is not detecting the ISDN link integrity

signal. An ISDN connection has not been established.

Check the BRI cable connection.

Chassis/Module LED State Description

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Cisco 2525 Manuale Utente Pagina 3