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Cisco Bug: CSCur89996 - MME releases UE context with Category NAS : Unspecified for Radio issues

Last Modified

Jan 29, 2017

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(17) 16.1.0.55634

Description (partial)

Symptom:
User is connected to the MME and has an active context. UE then intermittently looses RRC connection due to RF sync issues and when  the user  re-establishes the radio , User performs TAU. As a result the MME will tear down the active context with cause NAS unspecified.
Customer requests that since this is a radio issue, MME should tear the connection with cause Radio: unspecified.

Conditions:
Normal traffic scenario
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