![]() ![]() Twist the wires from pins 2 and 5 together. Twist the wires from pins 1 and 4 together. Use wire cutters to cut a working RJ-45/48 cable that is 5 inches long with a connector attached. Insert an external loopback cable into the port. To correct Rx RAI errors, complete the following steps: The failure is cleared if the Yellow alarm signal pattern does not occur in ten contiguous 16-bit signal pattern intervals. The Far End Alarm failure is not declared for SF links when a Loss of Signal is detected.įor ESF links, the Far End Alarm failure is declared if the Yellow alarm signal pattern occurs in at least seven out of ten contiguous 16-bit pattern intervals. ![]() The failure is cleared when bit 6 of at least one channel is not zero for a period usually less than one second and always less than five seconds. Maui-nas-03(config-controlle)# framing esfĬontact your Service Provider to check for an incorrect configuration within the Telco.Ī receive remote alarm indication (RAI) means the far end equipment has a problem with the signal it is receiving from the upstream equipment.įor SF links, the Far End Alarm failure is declared when bit 6 of all of the channels has been zero for at least 335 ms. ![]() For example: maui-nas-03# configure terminalĮnter configuration commands, one per line. To change the framing format, use the framing command in controller configuration mode. If not, change the framing format on the controller to match the line. To correct Rx AIS errors, complete the following steps:Ĭheck the show controller t1 output to see if the framing format configured on the port matches the framing format of the line. The AIS failure is cleared when the Loss Of Frame failure is cleared. The AIS failure is declared when an AIS defect is detected at the input and still exists after the Loss Of Frame failure is declared (caused by the unframed nature of the "all-ones" signal). Receive Alarm Indication Signal (Blue)Ī receive (Rx) alarm indication signal (AIS) means there is an alarm occurring on the line upstream from the equipment that is connected to the port. After each step, run the show controller t1 command to see if any alarms occur. The alarms and procedures to correct them are addressed in this section. Look for Clock Source is Line Primary in the show controller t1 output to verify that the clock source is derived from the network. It is common to use binary 8-zero substitution (B8ZS) line coding with Extended Superframe (ESF), and alternate mark inversion (AMI) line coding with Super Frame (SF). Note the values of the counters for the current interval.Ĭontact your Service Provider for framing and line coding settings. To see if the framing, line coding, and slip seconds error counters are increasing, execute the show controller t1 command repeatedly. Use the show controller command to see if there are alarms or errors displayed by the controller. Local or remote alarm information, if any, on the T1 line. Information to troubleshoot physical layer and data link layer problems. If you specify a slot and a port number, statistics for each 15 minute period are displayed. The show controller t1 EXEC command also provides the following: The Network Processor Module (NPM) or MultiChannel Interface Processor (MIP) can query the port adapters to determine their current status. This information is useful for diagnostic tasks performed by technical support personnel. The show controller t1 command displays the controller status specific to the controller hardware. Conventionsįor more information on document conventions, see the Cisco Technical Tips Conventions. This document is not restricted to specific software and hardware versions. There are no specific requirements for this document. Use this document in conjunction with the T1 Error Events Troubleshooting and the Internetwork Troubleshooting Guide.įor more information on the terms used in this document refer to the DS1, T1 and E1 Glossary Prerequisites Requirements An explanation of the alarm and common troubleshooting techniques are provided. ![]() This document explains common alarm types that may appear during T1 operation. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |