Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 17
▀ MME Enhancements for 17.3
▄ Release Change Reference, StarOS Release 17
266
New Behavior: In compliance with 3GPP TS 29.172, the MME LoCation Services (LCS) feature supports sending the
EMERGENCY_CALL_RELEASE event in a subscriber location report (SLR) request message, to the GMLC to notify
the GMLC of the call release, when an emergency call is released or when an emergency PDN is disconnected at the
MME.
EMERGENCY_CALL_RELEASE event in a subscriber location report (SLR) request message, to the GMLC to notify
the GMLC of the call release, when an emergency call is released or when an emergency PDN is disconnected at the
MME.
Note, this is not configurable functionality.
Customer Impact: Notifying the GMLC of the emergency call release event allows the GMLC to delete all information
previously stored for the emergency call in accordance with regulations.
previously stored for the emergency call in accordance with regulations.
CSCus34861 - MME is not using NAPTR with least preference first for MSC
selection
Feature Changes
Enabling Weight-based MSC Selection
Previous Behavior: By default, the MME selection of the peer MSC for the Sv interface is ‘weight’ based.
New Behavior: By default, the MME selection of the peer MSC for the Sv interface is now ‘preference’ based. A new
CLI command has been provided to enable the operator to disable the default and use ‘weight’ based load balancing.
CLI command has been provided to enable the operator to disable the default and use ‘weight’ based load balancing.
Customer Impact: The customer will need to explicitly configure weight-based selection to disable the new
preference-based selection scheme.
preference-based selection scheme.
Command Changes
peer-msc
This new command makes it possible for the operator to enable/disable weight-based selection of a peer MSC during
MSC lookup. By default, this functionality is not enabled.
MSC lookup. By default, this functionality is not enabled.
configure
call-control-profile profile_name
peer-msc interface-type sv weight
remove peer-msc interface-type sv weight
end
Notes:
remove
removes the previously configured peer-MSC configuration and disables weight-based selection of a
peer MSC.
Performance Indicator Changes
show configuration