Transcript Slajd 1 - Leliwa

VoLTE Basics
Leliwa Sp. z o.o.
www.leliwa.com
11-1
Emergency call
11-2
Emergency call
The need for support of emergency calls in
the IM CN subsystem is determined by
national regulatory requirements.
11-3
IP-CAN bearer setup for emergency session
(UE EPS registered)
emergency APN &
QoS configuration
MME


emergency IMS

IP
IP
S-GW
P-GW
IMS
11-4
IP-CAN bearer setup for emergency session
(UE EPS not registered)
emergency APN &
QoS configuration
MME


emergency IMS

IP
S-GW
P-GW
IMS
11-5
Emergency IMS registration*
Emergency APN
P-CSCF
REGISTER
REGISTER
sos
S-CSCF
HSS
I-CSCF
UAR/UAA
REGISTER
MAR/MAA
sos
401 UNAUTH
REGISTER
401 UNAUTH.
REGISTER
sos
UAR/UAA
REGISTER
SAR/SAA
sos
200 OK
401 UNAUTHORIZED
200 OK
200 OK
11-6
*USIM/ISIM available
E-CSCF in IMS architecture
Emergency –
Service Consistency
and Continuity AS
Location Retrieval
Function
E-SCC AS
Gm
P-CSCF
LRF
I4
MI
Mw
E-CSCF
S-CSCF
11-7
Mm
IMS
call setup
Mi/Mg
Mw
Emergency-CSCF
Le
PSAP
PSTN
Mm/Mw
Public Safety
Answering Point