I am supporting a MICS 4.0, and have been having trouble with the T1 dropping, and then coming right back up. I have replaced the DTI card, and the combo card and the problem is still occuring. The LEC tested to the NIU without any errors, but said that after they looped up the CSU they aw errors coming from the PBX. I hooked my test set up to the DTI card and sent up a loopback code. After the card was looped up I received about 2 erored seconds every 10 minutes. The framing and line coding are correct, and it's a straight T1 with 24 channels. The clock is set for Primary, and when I used the test set I had its clocking set up as internal. It seems to me to be a backplane problem. Any other suggestions?
Now they want me to try and swap out the KSU. I have a spare KSU, but the software release is not compatible. Would I be able to use the software cartridge from one KSU to the other and upload a backup?
The errors in the system are alarms 42-0, 43-0, and 44-0. Events are 323-00, 325-00, 330-00. These are the T1 thresholds.
Anyone have any other ideas or suggestions? Any input would be great.
Thanks,
Nappers
Now they want me to try and swap out the KSU. I have a spare KSU, but the software release is not compatible. Would I be able to use the software cartridge from one KSU to the other and upload a backup?
The errors in the system are alarms 42-0, 43-0, and 44-0. Events are 323-00, 325-00, 330-00. These are the T1 thresholds.
Anyone have any other ideas or suggestions? Any input would be great.
Thanks,
Nappers