WiFi Calling

1

WI-FI CALLING – A POWERFUL CUSTOMER RETENTION TOOL

JOHAN TERVE, VP MARKETING

2

ABOUT APTILO NETWORKS

• Market leader in Wi-Fi Service Management

• 100+ deployments in 70 countries

• Critical component for Wi-Fi calling & offloading

• Software solution & cloud service

• Reliable partner to leading telecom vendors

• HQ in Stockholm, Sweden

3

OUR PRODUCT APTILO SMP

4

SOME OF OUR CUSTOMERS 100+ Carrier Wi-Fi customers in more than 70 countries

http://english.fetnet.net/

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WHY SHOULD OPERATORS CARE ABOUT WI-FI?

WHAT IS NEXT-GENERATION WI-FI CALLING ?

BENEFITS OF WI-FI CALLING

WHAT ABOUT QOS FOR WI-FI CALLING?

IS IT REALLY ENOUGH TO RELY ON A STANDARD 3GPP AAA?

TURNKEY SOLUTION OR BEST-OF-BREED?

CALL FLOWS IN NEXT-GENERATION WI-FI CALLING

AGENDA

6

THE TELECOM LANDSCAPE IS CHANGING

6 Mobility

Content (TV, Games etc.)

Basic

Rich

Mobile Fixed

MNO

Cable MSO

Reason for Cable MSO to go

#1 Fast

Slow

7


7

Wi-Fi

CELL 70-80%

20-30%

Reason for MNO to go

#1 TODAY

Wi-Fi

85-90%

10-15%

IN A FEW YEARS

Mobile Broadband Provider

Something I use between Wi-Fi Hotspots

Churn

8


8

Landline? Why?

SIM-Card? What about my other devices ?

Reason for Cable MSO and MNO to go

#2 AND

NEW WAYS OF THINKING BY THE YOUNGER GENERATION

9 9


Wi-Fi will prevail ! It’s up to Cable MSOs and MNOs to capture this opportunity.

#3 reason

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WHAT IS THE COST OF CHURN?

10 0

50

100

150

200

250

T-Mobile, NL T-Mobile, AT KPN, NL(SAC/SRCconsumer)

EE, UK

EU

R p

er

co

ntr

act

cu

sto

me

r

T-Mobile, NL

T-Mobile, AT

KPN, NL (SAC/SRC consumer)

EE, UK

The cost of churn and churn prevention is typically around 15%

of mobile service revenue – in some cases above 20%

www.tefficient.com

Source:

EUR USD 268

214

161

107

54

This is 1.5-2.5 Billion / year for a 10 Billion operator. What if Wi-Fi could reduce this by just 10%? 150+ Million is a decent Wi-Fi budget!

Cost to recruit a new customer, compensating for the one that churned

http://www.tefficient.com

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CAN WI-FI ATTRACT NEW CUSTOMERS?

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58% of respondents (and more for 4G subs.) would churn to a mobile operator that provided public Wi-Fi connectivity as

part of the subscription

Surveys aren’t the same as reality, but results signal how strong value there is in Wi-Fi

Arqiva and Analysys Mason primary research on 2000 UK respondents http://www.arqiva.com/downloads/public-wi-fi-in-a-4g-world.html

http://www.arqiva.com/downloads/public-wi-fi-in-a-4g-world.html














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AGENDA

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NEXT-GEN WI-FI CALLING ON THE MOVE

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DEVICE SUPPORT

• Apple iPhone 6

• Samsung Galaxy S6

• MS Lumina 640

WHO’S NEXT ?

Sep 2014

Apr 2015

Apr 2015

WHO’S NEXT ?

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NATIVE WI-FI CALLING

14 Example of user experience : iPhone 6

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NATIVE WI-FI CALLING ON IPHONE 6

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T-Mobile’s Wi-Fi Calling symbol

LTE strength Operator

Wi-Fi Calling Symbol

Wi-Fi strength

Example of user experience : iPhone 6

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NATIVE WI-FI CALLING ON IPHONE 6

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Same voice dialer Same phone number

Example of user experience : iPhone 6

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WHAT IS NEXT-GEN WI-FI CALLING?

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Wi-Fi

LTE

Wi-Fi RAN

S-GW

ePDG

P-GW Circuit

Switched

LTE RAN

Voice over Wi-Fi (VoWi-Fi)

Voice over LTE (VoLTE)

IMS Core VoLTE/VoWi-Fi

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18

Wi-Fi

LTE

Wi-Fi RAN

S-GW

ePDG

P-GW Circuit

Switched

LTE RAN



Native support:

• VoWi-Fi • VoLTE • Call Transfer

VoWi-Fi VoLTE Same Dialer

1


19


19

Wi-Fi

LTE

Wi-Fi RAN

S-GW

ePDG

P-GW Circuit

Switched

LTE RAN



Native support:



1

Secure IPSec tunnel going through ANY

Wi-Fi Network

2


20


20

Wi-Fi

LTE

Wi-Fi RAN

S-GW

ePDG

P-GW Circuit

Switched

LTE RAN



Native support:



1


Wi-Fi Network

2

ePDG terminating IPSec and connecting

with P-GW

3


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21

Wi-Fi

LTE

Wi-Fi RAN

S-GW

ePDG

P-GW Circuit

Switched

LTE RAN



Native support:



1


Wi-Fi Network

2


with P-GW

3

IMS with support for VoWi-Fi and VoLTE connecting to PSTN

4


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22

Wi-Fi

LTE

Wi-Fi RAN

S-GW

ePDG

P-GW Circuit

Switched

LTE RAN



Native support:



1


Wi-Fi Network

2


with P-GW

3

IMS with support for VoWi-Fi and VoLTE connecting to PSTN

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3GPP AAA Authenticating

and Authorizing the Wi-Fi Calling

service

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3GPP AAA

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AGENDA

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WI-FI CALLING BENEFITS - SUBSCRIBER

• Cellular Voice / Text Services reach into my home

• I can cancel my landline and rely on mobile only

• Seamless experience • Integrated into my smartphone

• Calls transfer LTE Wi-Fi without interruption

• I can make calls from abroad using local rates • At least if my operator applies T-Mobile’s policy

• HD voice calls

• Faster Call Setup

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Also available for VoLTE

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WI-FI CALLING BENEFITS - OPERATOR

• Enhanced indoor coverage improves customer satisfaction

• Same charging models as for cellular voice

• Roaming may be a game changer in the industry

• No need to invest in femtocells or DAS to cover residents

• Large savings in both CAPEX and OPEX

• Small Cells still an option for dense areas

• Back in the driving seat – OTT less important for subs.

• Works over any Wi-Fi connection

• Low barrier for operators with existing IMS

• Only need to deploy ePDG and 3GPP AAA

• First mover will attract new subscribers

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AGENDA

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QOS – GLASS HALF FULL OR HALF EMPTY?

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Wi-Fi has limited QoS control !

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Limited QoS guarantee indoors

anyway for cellular !

Indoor Outdoor

Signal -30 db

0,001 watt

1 watt

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WMM VSA




Indoor Outdoor

Signal -30 db

0,001 watt

1 watt

I can control QoS in my own Wi-Fi.

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WMM VSA




Indoor Outdoor

Signal -30 db

0,001 watt

1 watt


Enough capacity in Wi-Fi ?

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WMM VSA

1.000 Calls or 333 HD

Voice




Indoor Outdoor

Signal -30 db

0,001 watt

1 watt


Enough capacity in Wi-Fi ? 802.11ac

1.3 Gbps

Often excess capacity in a

Wi-Fi network

Home

10 Mbps

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WMM VSA

1.000 Calls or 333 HD

Voice




Indoor Outdoor

Signal -30 db

0,001 watt

1 watt


Enough capacity in Wi-Fi ? 802.11ac

1.3 Gbps

Often excess capacity in a

Wi-Fi network

Home

10 Mbps

SET THE RIGHT EXPECTATIONS

“Mobile voice services wherever you are

connected to Wi-Fi, to the capabilities of that Wi-Fi network”

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AGENDA

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THE 3GPP AAA FUNCTION IN WI-FI CALLING

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SWx

SWm

HSS 3GPP AAA

ePDG PGW

S6b

ANY Wi-Fi

IMS EAP-AKA PSTN

User connects to ANY Wi-Fi

network

1

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THE 3GPP AAA FUNCTION IN WI-FI CALLING

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SWx

SWm

HSS 3GPP AAA

ePDG PGW

S6b

ANY Wi-Fi

IMS EAP-AKA PSTN

User connects to ANY Wi-Fi

network

1

3GPP AAA authenticates and authorize user for

Wi-Fi Calling

2

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APTILO’S ADDITIONAL “SMARTS”

• The Aptilo SMP Wi-Fi Calling solution

provides optional “smarts”:

• Additional multiple source look-ups for service or user related policy decisions.

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GTP (S2b) IPSec Tunnel (SWu)

SWx

SWm

HSS

Aptilo SMP Wi-Fi Calling

3GPP AAA

ePDG PGW

S6b

D´/ Gr` HLR

IMS EAP-AKA PSTN

SGi

Policy lookups

CRM Other Db

Gx

ANY Wi-Fi

non-SIM Support

Wi-Fi Calling Policy

Policy Lookup

PCRF

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• Support for non-SIM device provisioned by a Wi-Fi Calling application.

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PCRF


SWx

SWm

HSS


3GPP AAA

ePDG PGW

S6b

D´/ Gr` HLR

IMS EAP-AKA PSTN

SGi


Policy Lookup

Policy lookups

CRM Other Db

Gx

ANY Wi-Fi

non-SIM Support

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• Support for HLR.

PCRF


SWx

SWm

HSS


3GPP AAA

ePDG PGW

S6b

D´/ Gr` HLR

IMS EAP-AKA PSTN

SGi

non-SIM Support


Policy Lookup

Policy lookups

CRM Other Db

Gx

ANY Wi-Fi

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• Support for HLR.

• User / Device Authentication and Authorization for Wi-Fi access.

PCRF


SWx

SWm

HSS


3GPP AAA

ePDG PGW

S6b

D´/ Gr` HLR

ANY Wi-Fi

IMS EAP-AKA PSTN

SGi

non-SIM Support


Policy Lookup

Policy lookups

CRM Other Db

Gx

SWa

Access Gateway

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AGENDA

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TURN-KEY SOLUTIONS

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VENDOR A

3GPP AAA HSS/HLR

ePDG

VENDOR B

3GPP AAA HSS/HLR

ePDG

AP AP AP AP

I got somebody to hang if something goes wrong.

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VENDOR LOCK-IN BY TURN-KEY SOLUTIONS

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VENDOR A

3GPP AAA HSS/HLR

ePDG

VENDOR B

3GPP AAA HSS/HLR

ePDG

AP AP AP AP

It will only work with our own

3GPP AAA.

Our 3GPP AAA works

best with our HSS.

Want to build Wi-Fi? It’s ok

as long as you go with us or

vendor F.

If you go with our Wi-Fi and Gateways, you

will get the AAA for free!

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VENDOR LOCK-IN BY TURN-KEY SOLUTIONS

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VENDOR A

3GPP AAA HSS/HLR

ePDG

VENDOR B

3GPP AAA HSS/HLR

ePDG

AP AP AP AP

It will only work with our own

3GPP AAA.

Our 3GPP AAA works

best with our HSS.

Want to build Wi-Fi? It’s ok

as long as you go with us or

vendor F.

If you go with our Wi-Fi and Gateways, you

will get the AAA for free!

Why are some vendors only pro standards when they are sitting in the standardization meetings?

Is there really such a thing as a free lunch?

What if my turn-key vendor terminates a critical product line?

How can I get the best functions to stay competitive?

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WHY GO BEST-OF-BREED?

• Avoid vendor lock-in

• Choose best product

• Avoid supply risks

• Increase competition

ANY Wi-Fi Infrastructure Vendor

AP AP AP AP AP AP AP AP

ANY Mobile Core Vendor

ePDG ePDG ePDG ePDG

HSS HSS HSS

3GPP AAA

Vendor Agnostic

Vendor agnostic AAA may be only 10% of

your investment……but

….what if it make you save just 11% on the

remaining 90%?

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WHY GO BEST-OF-BREED?

• Avoid vendor lock-in

• Choose best product

• Avoid supply risks

• Increase competition

• Aptilo SMP enable best-of-breed

• 100+ deployments with all leading vendors in more than 70 countries

• Pre-enabled adaptations with vendor specific attributes (VSA)

ANY Wi-Fi Infrastructure Vendor

AP AP AP AP AP AP AP AP

ANY Mobile Core Vendor

ePDG ePDG ePDG ePDG

HSS HSS HSS

3GPP AAA

Vendor Agnostic

Vendor agnostic AAA may be only 10% of

your investment……but

….what if it make you save just 11% on the

remaining 90%?

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AGENDA

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• UE attach to Wi-Fi and obtain IP connectivity • UE selects ePDG based on static IP configuration or DNS

• UE and ePDG perform mutual authentication during IPsec tunnel

establishment using public key certificates • UE sends encapsulated EAP-AKA messages over IKEv2 to ePDG incl.

user identity (NAI) and potential APN (for IMS) • ePDG de-capsulates EAP-AKA messages and sends to AAA

for authentication and authorization

• AAA fetch AKA authentication vectors generated by the HSS (if not available). AAA extract IMSI for the user

• AAA initiates the authentication challenge with ePDG and UE

• If successful, the AAA initiates the subscriber

profile retrieval with the HSS to check if the user is authorized for the untrusted access and sends server registration.

• If successful, the AAA sends the final authentication answer incl. IMSI and MSK (Master Session Key)

3GPP AAA

SWx

Wi-Fi EAP-AKA

Wi-Fi RAN Untrusted

IPSec (SWu) IPSec termination

S2b (GTP or PMIPv6)

SGi

SWm S6b


HSS

ePDG

IMS Core VoLTE/VoWiFi

Circuit

Switched

P-GW

EPDG TUNNEL SETUP

1

3 4 5

6

7

8

9

2

1

2

3

4

5

6

7

8

9 -EAP-AKA or AKA’ required for authentication -The username part of NAI is based on IMSI

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• PGW connection information is returned by the AAA as part of the response to the ePDG. Info on APN-AMBR, static QoS profile can be included.

• If the UE has provided an APN, the ePDG verifies that it is allowed by the user’s subscription. If the UE has not provided an APN, the ePDG selects a default APN.

• The ePDG sends a Create Session Request (incl. info on IMSI, APN, RAT type, PDN address, EPS Bearer Identity, Default EPS Bearer QoS, APN-AMBR, Charging Characteristics) message to the PGW

• The PGW creates a new entry based on the EPS Bearer Identity and

generates a Charging Id. The new entry allows the PGW to route user plane traffic between the ePDG and the packet data network and to start charging. If required, the PGW performs authentication and authorization with the AAA to get access for the given APN.

• The selected PGW informs the AAA on its identity and the selected S2b protocol variant (here GTP). The AAA then informs the HSS of the PGW identity and the associated APN.

• The PGW returns a Create Session Response message to the ePDG incl. the UE IP address.

• The ePDG is now authenticated by the UE and ePDG sends IP address to UE.

• IP connectivity is setup and packets are tunneled to and from UE and PGW through IPSec and GTP. From the PGW to IMS, normal IP-based routing takes place.

INITIAL ATTACH WITH GTP

10

17

16

15

14

12

14

17

17

3GPP AAA SWx

Wi-Fi

EAP-AKA

Wi-Fi RAN Untrusted

IPSec (SWu) IPSec termination

S2b (GTP or PMIPv6)

SGi

SWm S6b


HSS

ePDG


Circuit

Switched

P-GW 13

11

10

11

12

13

14

15

16

17 - IMSI is used for user identification on the GTPv2 based S2b interface

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No one knows Carrier Wi-Fi better than we do!

Multitude of Wi-Fi Business Models, login & billing options

Best-of-Breed Pre-integrated Wi-Fi features

Large-Scale Carrier Wi-Fi deployments

+100 Carrier Wi-Fi Customers in more than 70 countries

Vast experience with mobile core integration

Q & A

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ACRONYMS

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FOR Q&A BACKUP SLIDES

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ROAMING – 3GPP OPTIONS

• 3GPP describes two options of roaming for “untrusted” access

• Routed to Home PGW/IMS

• Local Breakout (LBO) to Visited PGW/IMS

• Both options require an ePDG in the visited network

• The 3GPP two options facilitates that full control of the UE location can be achieved and international calls can be allowed/denied as a policy decision by the home operator. Differentiated charging is possible.

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3GPP ROAMING SCENARIO: HOME ROUTED

SWx

Wi-Fi EAP-AKA

Wi-Fi RAN Untrusted

IPSec (SWu)

IPSec termination

S2b (GTP or PMIPv6)

SGi

SWm

S6b

AAA Server

HSS

ePDG

Home IMS Core

VoLTE/VoWiFi

P-GW

Circuit

Switched

Visited network

Home operator

hPCRF

Gx

Gxb

Rx

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3GPP ROAMING SCENARIO: LBO

SWx

Wi-Fi EAP-AKA

Wi-Fi RAN Untrusted

IPSec (SWu)

IPSec termination

S2b (GTP or PMIPv6)

SGi

SWm

S6b

AAA Server

HSS

Visted IMS Core

VoLTE/VoWiFi

Circuit

Switched SWd

Visited network

Home operator hPCRF

vPCRF AAA proxy

Gxb

Gx

S9

Rx

P-GW

ePDG

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ROAMING: CONTROLLING INT. WI-FI CALLS • In initial deployments, the UE will connect directly with the home ePDG

without any visited ePDG involved

• For this setup, no native information is available on what Wi-Fi network and in which country the roaming UE voice client is connected

• cmp T-Mobile’s international Wi-Fi Calling rates to US numbers

• Two possible solutions to manage the inherent lack of location info:

• based on the UE source IP address the ePDG could pass on information over SWm using AVP Visited-Network-Identifier to the AAA server. An additional IP registry database look-up (e.g. with ARIN, RIPE, APNIC, etc.) would be required. -> will require ePDG support

• policy decision to authorize/deny the Wi-Fi Calling service based on UE location info available in HSS

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ROAMING: CONNECTING TO HOME EPDG

3GPP AAA

SWx

Wi-Fi EAP-AKA

Wi-Fi RAN Untrusted

IPSec (SWu)

IPSec termination

S2b (GTP or PMIPv6)

SGi

SWm S6b


HSS

ePDG


P-GW

Circuit

Switched

Visited network

Home operator

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UE/EPDG INITIATED DETACH (S6B) Triggers

- UE lost Wi-Fi connection or power off

- IKEv2 tunnel release

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HSS/AAA INITIATED DETACH (S6B) Triggers:

- Re-authentication timeout

- User’s subscription removed

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PGW RESOURCE DEACTIVATION (S6B) Trigger

- Handover Wi-Fi – LTE: connections associated with the PDN are released but the PDN IP address is maintained in the PGW as the anchor point

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HANDOVER - UNTRUSTED WI-FI TO LTE

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HANDOVER - LTE TO UNTRUSTED WI-FI

WiFi Calling

Technology

Transcript of WiFi Calling