Cabletron Systems CSMIM-T1 manual Modem Configuration Status LEDs, Modem Port Status LEDs

CSMIM-T1 Front Panel

RED - Red Alarm

This red indicator is ON during a locally detected carrier failure. During the “red” alarm condition, a “yellow” alarm is transmitted to the telephone network.

YEL - Yellow Alarm

This yellow indicator is ON when receiving a “yellow” alarm condition from the telephone network.

BLU - Blue Alarm

This blue indicator is ON when receiving an unframed, all ones Alarm Indication Signal (AIS) from the network. This condition exists upon a loss of originating signal, or when any action is taken that would cause signal disruption.

1.6.6Modem Configuration Status LEDs

To help determine if a problem exists in a modem, there are three green/amber LEDs labeled 1-8, 9-16, and 17-24. These LEDs indicate groups of modems installed. When amber, the LED indicates that at least one modem within the indicated group is in a fault condition. When green, the LED indicates that diagnostics have determined that the modems are operating normally.

1.6.7Modem Port Status LEDs

Each modem has a group of three LEDs to indicate activity. These LEDs can help determine a fault within a group of modems.

CD - Carrier Detect

This green LED is ON when the carrier has been detected on the telephone line of the corresponding modem. There are a total of 24 CD indicators, one per channel.

TX - Transmit Data

This green LED flashes to indicate the corresponding modem is transmitting data. There are a total of 24 TX indicators, one per channel.

RX - Receive Data

This green LED flashes to indicate the corresponding modem is receiving data. There are a total of 24 RX indicators, one per channel.

CSMIM-T1 Hardware Installation Guide 1-9