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Cisco Bug: CSCup41450 - MME not initiating Ue context modification upon s1 ho fail in foll scen

Last Modified

Dec 26, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(21)

Description (partial)

Symptom:
1. Attach
2.Mt voice call trigger 
3. MME sends ue context modification to enb_src .. src enb sends ue context modification failure with cause s1 handover triggered.
4. s1 handover procedure is started and handover resources are allocated at target.
5. handover cancel is initiated by source and handover fails .. 
MME should hav sent ue context modification to source enb

Conditions:
Build used -55432
Call failing to trigger CSFB during eNB s1 handover when s1 handover gets cancelled .
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