No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

Rate and give feedback :
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
UP_T1AIS

UP_T1AIS

Description

The UP_T1AIS alarm indicates the status of upstream 1.5 Mbit/s signals. This alarm is reported if a tributary board has detected that the upstream T1 signals are all "1"s.

Attribute

Alarm Severity Alarm Type

Minor

Communication alarm

Parameters

None.

Impact on the System

When the UP_T1AIS alarm occurs, the 1.5 Mbit/s services are interrupted. Consequently, the 1.5 Mbit/s services are unavailable.

Possible Causes

The possible causes of the UP_T1AIS alarm are as follows:

  • Cause 1: The TU_LOP, TU_AIS, or DOWN_T1_AIS alarm occurs on the tributary board that interconnects with the tributary board at the local station.
  • Cause 2: An alarm such as T_ALOS or UP_T1AIS occurs on the tributary board that is located at the opposite station and that accesses the 1.5 Mbit/s signals.
  • Cause 3: The local board is faulty.

Procedure

  1. Cause 1: The TU_LOP, TU_AIS, or DOWN_T1_AIS alarm occurs on the tributary board that interconnects with the tributary board at the local station.
    1. On the NMS, check whether a TU_LOP, TU_AIS, or DOWN_T1_AIS alarm is reported on the tributary board connected to the local tributary board. If such an alarm exists, clear it and then check whether the UP_T1AIS alarm is cleared.
    If… Then...

    The alarm is cleared,

    No further action is required.

    The alarm persists,

    Go to the next step.

  2. Cause 2: An alarm such as T_ALOS or UP_T1AIS occurs on the tributary board that is located at the opposite station and that accesses the 1.5 Mbit/s signals.
    1. Check whether a T_ALOS or UP_T1AIS alarm is reported on the peer tributary board that receives 1.5 Mbit/s signals. If such an alarm exists, clear it and then check whether the UP_T1AIS alarm is cleared.
    If… Then...

    The alarm is cleared,

    No further action is required.

    The alarm persists,

    Go to the next step.

  3. Cause 3: The local board is faulty.
    1. If the alarm persists, replace the relevant board of the opposite station. Then check whether the alarm is cleared.

      If…

      Then...

      The alarm is cleared,

      No further action is required.

      The alarm persists,

      Go to the next step.

    2. Replace the board that reports the UP_T1AIS alarm. Then check whether the alarm is cleared.
    If… Then...

    The alarm is cleared,

    No further action is required.

    The alarm persists,

    Contact Huawei technical support engineers to handle the alarm.

Related Information

None

Translation
Download
Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 75144

Downloads: 138

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next