PRI Alarm Types and Meanings (2008)
Table of contents
Combined revision comparison
Interpreting the alarms: *IMPORTANT*
http://wiki.sangoma.com/wanpipemon-T1-E1-line-alarms-0
YELLOW: remote alarm indication (RAI): The RAI (remote alarm indication) signal indicates loss of layer 1 capability at the user-network interface. RAI propagates towards the network if layer 1 capability is lost in the direction of the user, and RAI propagates toward the user if layer 1 capability is lost in the direction of the network. The {{ fon.product( site.hostname ) }} has detected a loss of signal from the carrier's side.
RED: Loss of signal (LOS): The equipment shall assume "loss of signal" when the incoming signal amplitude is, for a time duration of at least 1 ms, more than 20 dB below the nominal amplitude. The equipment shall react within 12 ms by issuing AIS. The {{ fon.product( site.hostname ) }} has detected a loss of connectivity to the smart jack supplied by the carrier, but this can be caused by misconfiguration of the server.
Version from 17:30, 7 Sep 2008
YELLOW: remote alarm indication (RAI): The RAI (remote alarm indication) signal indicates loss of layer 1 capability at the user-network interface. RAI propagates towards the network if layer 1 capability is lost in the direction of the user, and RAI propagates toward the user if layer 1 capability is lost in the direction of the network. The {{ fon.product( site.hostname ) }} has detected a loss of signal from the carrier's side.
RED: Loss of signal (LOS): The equipment shall assume "loss of signal" when the incoming signal amplitude is, for a time duration of at least 1 ms, more than 20 dB below the nominal amplitude. The equipment shall react within 12 ms by issuing AIS. The {{ fon.product( site.hostname ) }} has detected a loss of connectivity to the smart jack supplied by the carrier, but this can be caused by misconfiguration of the server.
Current version
Interpreting the alarms: *IMPORTANT*
http://wiki.sangoma.com/wanpipemon-T1-E1-line-alarms-0
YELLOW: remote alarm indication (RAI): The RAI (remote alarm indication) signal indicates loss of layer 1 capability at the user-network interface. RAI propagates towards the network if layer 1 capability is lost in the direction of the user, and RAI propagates toward the user if layer 1 capability is lost in the direction of the network. The {{ fon.product( site.hostname ) }} has detected a loss of signal from the carrier's side.
RED: Loss of signal (LOS): The equipment shall assume "loss of signal" when the incoming signal amplitude is, for a time duration of at least 1 ms, more than 20 dB below the nominal amplitude. The equipment shall react within 12 ms by issuing AIS. The {{ fon.product( site.hostname ) }} has detected a loss of connectivity to the smart jack supplied by the carrier, but this can be caused by misconfiguration of the server.