Cisco Cisco Packet Data Gateway (PDG)
MME Changes in Release 17
▀ MME Enhancements for 17.0
▄ Release Change Reference, StarOS Release 17
318
This command now includes new keywords to configure the t3412-extended timeout values.
configure
context context_name
mme-service mme_svc_name
[ default ] emm { t3412-extended-timeoutt3412_ext_dur }
end
Notes:
t3412-extended-timeout
: Extended periodic TAU timer sends to UE. Range: 0-1116000 seconds (0-18600
minutes). Default: 3600 seconds (60 minutes).
Performance Indicator Changes
show mme-service all
The following highlighted field has been added to show the configuration of the extended t3412 timer for the MME
service.
service.
T3412 Extended Timeout
show mme-service db record imsi
The following highlighted field has been added to show the configuration of the extended t3412 timer.
Subscribed Periodic RAU TAU Timer Value
CSCum37475 - MTC Support : Reject causes with MM & SM back-off time
Feature Changes
Support for Reject Causes with MM and SM Back Off Timers
This feature requires that a valid license key be installed. Contact your Cisco Account or Support representative for
information on how to obtain a license.
information on how to obtain a license.
Under congestion, the MME can now assign EMM or ESM back-off timer to the UEs and request the UEs not to access
the network for a given period of time.
the network for a given period of time.
Refer to 3GPP TS 23.401 Section 4.3.7.4.2.4 (Version 10.4.0) for more details.
EMM T3346 Timer
The MME now allows configuration of the T3346 back-off timer value. EMM timer value. The default value of this
timer will be set to 25 minutes.
timer will be set to 25 minutes.
With this feature, when any EMM request rejected by MME because of congestion, the reject will have EMM cause of
“congestion” (#22) and will include the back-off timer (T3346) IE. This back-off timer is chosen randomly and will be
10% below or above the configured T3346 timer value.
“congestion” (#22) and will include the back-off timer (T3346) IE. This back-off timer is chosen randomly and will be
10% below or above the configured T3346 timer value.