NTG Wifi-Calling Client

Content

• Wifi-Calling Service

• Why Wifi-Calling

• Challenges for Wifi-Calling

• NTG VoWifi Client

Wifi-Calling Services

• Wifi-Calling (VoWifi) is an operator-provided service that makes it possible for

consumers to make regular phone calls and text messages from their SIM-based

mobile phone number, even if they have poor cellular coverage, by utilizing a Wi-

Fi network.

• Wifi-Calling Standardization support Seamless handover for VoLTE calls between

LTE and Wi-Fi and vice versa. Conversational video is also possible via Wi-Fi

“ViLTE”.

• Wifi-Calling offers the consumers seamless experience, they are reachable on

their normal numbers and can place call using their native dialer and phone book.

• Wifi-Calling utilizes IMS core to provide a packet voice service over Wifi coverage.

Why Wifi-Calling

Globally 70% of consumer are not satisfied with the indoor Voice quality, reliability & coverage. Wifi Calling offers better indoor coverage. Smartphone users send texts and make voice call indoor as twice than outdoor.

Coverage

Benefits for Consumers

Make benefit from VoLTE/IMS enriched services. Place calls from all device even non-SIM based. Use native clients with seamless experience compared to OTT Apps.

Offered Services

Consumer can use Wifi-Calling while travelling with cheaper rates. MNO may offer cheaper for calls placed over consumer home wifi.

Cost

Why WiFi Calling?

Figure 1: Satisfaction with the indoor experience

Why WiFi Calling? Figure 2: Why users find Wi-Fi calling appealing

Why Wifi-Calling

Better Coverage. Enriched services.

User Loyalty

Benefits for Operators

Better indoor coverage Capacity offloading. Make use of IMS based services over wifi. Complementary service for VoLTE

Network performance

Roaming service over un-trusted Wifi Competing with OTTs through standard native services. Technology leadership Cost effective solution compared to small cells.

New revenue Streams

Market Updates

Figure 3: Mobile IP Voice Minutes of Use—VoWiFi, VoLTE, and VoIP (Cisco)

- More than 30 operators launched Wifi-Calling and many other are deploying.

- Cisco forecast that Wifi minutes will dominate the IP Voice services by 2018.

Wifi Calling Challenges

- service uptake and adoption is among challenges for VoWifi service Business Case the.

- Terminals availability should be resolved to secure higher customer base.

- Currently iOS8 and higher versions supports Wifi-Calling on iphone5C and higher.

- On the Android front, only high end smartphones support the service through customizations.

- NTG Wifi-Calling Client help operators to serve all their Android users.

Figure 4: Percentage of existing Wi-Fi calling users facing issues

NTG Wifi-Calling Client

NTG Wifi Calling Client provides a seamless Voice & SMS user experience over Wifi networks.

Unlike over the top (OTT), the client maintains 3G networks Supplementary, enhanced & regulatory services, with single number

How Does it works:

• An integrated client detects proper Wi-fi signals, and route all Telephony service over Wifi/IMS network.

• Using subscriber credentials for secure registration & Authentication.

• Uses native phone dialer, phonebook & messaging.

• Work over any Wi-fi AP (untrusted + trusted).

• Support SIM/Non-SIM devices.

• Complementary to VoLTE, Supports SRVCC.

NTG Wifi Calling Client work for all Android devices, accelerating the service uptake.

NTG Wifi-Calling Client

Reference: - Etisalat Misr Wifi-Calling Client for Android

smartphones in Jul-16.

- Successful PoC covering all basic features.

- Awarded the contract for delivery and support Commercial client.

- Interwork with E/// IMS & ePDG.

- Uses EAP-TLS for user Authentication with ePDG/AAA

Wi-Fi Calling architecture

NTG Wifi-Calling Client

UE – SIM based

Backend Server

e-PDG

AAA server

Activation & provisioning network

EMA

EMA Integration

Back-End Server • Activation Server. • CA certificate issuance • Authenticator “Optional”.

• Social Features “Optional”

HSS

IMS-NE

Wifi-Calling Client • Dialer Interrupt &

call rerouting. • Authentication &

Authorization. • SIP Client. • Logging Service. • Other services…..

Untrusted AP

IMS Network • SIP Control. • SIP Digest registration. • Charging. • Supplementary &

Telephony Services. • etc…..

AAA • Authenticator. • EAP-TLS certificate

comparison.

Wifi

10/17/2016 NTG Wifi-Calling Client 12

ePDG • Interface with untrusted

Wifi Users. • Establish IKEv2 VPN tunnel

with client. • route all traffic to the

internal mobile network

NTG Wifi-Calling Client: Sample Screens with Different Themes

NTG Wifi-Calling Client: Sample Screens with Different Themes

Thanks