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Benefits of VoLTE/RCS to Carriers and Subscribers

Quan Choi

Sr. ManagerProduct Strategy

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IMS platform IMS platform

Enhanced Address Book

•Picture/ Portrait•Link•Status text•Availability•Location Information•Time zone

Enhanced Address Book

•Picture/ Portrait•Link•Status text•Availability•Location Information•Time zone

Voice and Video

•VoLTE (with lower latency)•HD Voice•IP Video Call •Video Conferencing•Video Messaging/Video VM

Voice and Video

•VoLTE (with lower latency)•HD Voice•IP Video Call •Video Conferencing•Video Messaging/Video VM

Messaging

•SMS• MMS

Messaging

•SMS• MMS

Chat

•1:1 chat•Group chat

Chat

•1:1 chat•Group chat

Content Sharing

•Video sharing• picture sharing•File transfer•Location sharing

Content Sharing

•Video sharing• picture sharing•File transfer•Location sharing

What is RCS?• Rich Communication Services (RCS), provides Mobile

Network Operators with a means of transitioning circuit services (voice and SMS) into an all-IP and LTE world

• Latest version of RCS is Release 5.1, bringing in support for IP Voice, IP Video, and Location Sharing

• Voice over LTE (VoLTE) is an RCS service• Enabled by an IMS platform

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Challenges in Implementing VoLTE

SRVCCEmergency services Service Continuity

Complexity

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Emergency/Regulatory Services

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Voice Call Continuity

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Service Continuity

• AT&T Fine Print– “The following features/services are currently

incompatible with HD Voice service: prepaid service, Smart Limits, Ringback Tones, and OfficeDirect and OfficeReach (for business customers).”

• Other services that may differ between IMS and legacy network– Conference calling (number of connections could

vary)– Video calling and conferencing– Other enhanced messaging services– Simultaneous voice and LTE

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Why not VoIP over LTE?

Features on the device and RAN

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VoLTE Status on Tier-1 Carriers in North America

• VoLTE Launched nationwide in September 2014

• Supported on GS5, LG G2, and iPhone 6

• Part of their Advanced Calling 1.0, with VoLTE and video calling (except on the iPhone)

• No SRVCC

• Move off of CDMA ASAP

• VoLTE launch in May 23, 2014 with HD Voice 3 in limited market with one device

• Support SRVCC

• Video calling support likely to follow Verizon in 2014.

• Other RCS feature, such as enhanced messaging to follow

• Expect VoLTE launch in 2015, market by market

• Currently support HD voice through 1x-advanced

• Very limited deployment

• RCS support via Jibe in 2014

• VoLTE launch in May 22, 2014, with HD voice, completed national deployment in July – Currently, four devices supported

• Support SRVCC

• They will likely continue to support “Joyn-like” RCS services, but will deploy full RCS services such as video and enhanced messaging

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Benefits to Carriers

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Customer Benefits

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Real Benefits to Carriers

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End state for VoLTE

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Thank You