[c-nsp] Q.931 disconnect problem

[Tseveendorj Ochirlantuu]

Hi guys,

This gateway used for call terminating. I have found following log on my
gateway. These are come from debug isdn q931.

part of entire log:

    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8090 - Normal call clearing
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x8491 - User busy
    Cause i = 0x82E6 - Recovery on timer expiry
    Cause i = 0x82E6 - Recovery on timer expiry
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x82E6 - Recovery on timer expiry
    Cause i = 0x82E6 - Recovery on timer expiry
    Cause i = 0x8491 - User busy
    Cause i = 0x8090 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8090 - Normal call clearing
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x8491 - User busy
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8491 - User busy
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
    Cause i = 0x8090 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8090 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing
    Cause i = 0x8290 - Normal call clearing

My question is

1. What kind of reason following errors occurred ?
2. How to solve that ?

  Cause i = 0x809E - Response to STATUS ENQUIRY or number unassigned
  Cause i = 0x82E6 - Recovery on timer expiry


Thanks for any help.

Best regards,
Tseveen.