SRVCC HO Timer Configuration for ESM Notification

Feature Summary and Revision History

Summary Data

Applicable Product(s) or Functional Area

MME

Applicable Platform(s)

  • ASR 5500

  • VPC-DI

  • VPC-SI

Feature Default

Enabled – Configuration Required

Related Changes in This Release

Not applicable

Related Documentation

  • Command Line Interface Reference

  • MME Administration Guide

Revision History

Revision Details

Release

Introduced to 21.11 release.

21.11.9

Introduced to 21.12 release.

21.12.12

First introduced.

21.5.19

Feature Changes

Previous Behavior: During SRVCC Handover, if handover cancel is triggered due to UE context release received from eNB due to lost radio connection with UE, ESM notification will not be sent to UE.

New Behavior: During SRVCC Handover, if handover cancel is triggered due to UE context release received from eNB due to lost radio connection with UE, UE goes to IDLE mode. When UE comes back through service request or TAU request within the configured timer value, ESM notification will be sent to UE and UE will re-establish the session.

Command Changes

Configuring UE Come Back Time

Use the following configuration to configure UE come back time after UE context release due to radio radio connection when UE: 

configure 
   call-control-profile profile_name 
      srvcc ho-timer ho_timer 
      end

Notes:

  • srvcc : Configures the basic SRVCC support on the MME.

  • ho-timer ho_timer : Configures UE come back time in seconds after UE context released due to lost radio connection with UE. ho_timer must be an integer value from 1 to 100.