Nokia MetroHopper User Manual
                                                                                                                                   | |
Contents
| 
Commissioning and Maintenance36 (42) © Nokia Networks Oy DN99611394Issue 2-0 enA.2 FXC RRI unit alarmsAIS 2MSeverity: Major Unit/SB type:1) Flexbus channel2) Platform interfaceFault code: 66 Consequence:Meaning: Alarm signal is received, the received signal has no framing and it is all ones.Instructions: The signal is cut somewhere in the network and AIS replacement has taken place. Follow the 2Msignal in the network to find out the place where AIS replacement has been done. This link is usually faulty orhas configuration errors. Other alarms may cause this alarm because of AIS switching in the receiving directionas shown in the Consequence field of some alarms.Cancelling:Alarm signal receivedSeverity: Critical Unit/SB type: FlexbusFault code: 64 Consequence: AIS is connected to all received Flexbus channels. This will causeAIS 2 Mbit/s alarm to all used platform interfaces that are connected to the alarmingFlexbus interface.Meaning: OU has lost the frame lock and it has replaced the frame with a pseudo frame to ensure IU - OUcommunication.Instructions: The signal may be faded in the radio path. In this case the OU has the loss of incoming radio signalalarm. If this is not active in the OU, check the radios at both ends of the hop. They must have the rightconfiguration (frequency, interleaving and TX power on). Check also that the same capacity has been selectedfor both ends of the hop.Cancelling: If the radio signal is faded it will come back when the fading stops. If the OU is FlexiHopper, checkthe maximum TX power setting. If a stronger TX power is allowed, it will withstand fading better. |
Related manuals for Nokia MetroHopper
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine