Light Reading

T-Mobile Expands VoLTE, Gets Going with 700MHz 4G

Dan Jones

T-Mobile says it has now launched voice-over-LTE across its 4G network footprint in the US.

The IP voice service launch was one of the ongoing updates that T-Mobile US Inc. made about its 4G LTE network during its second-quarter earnings call Thursday morning. "As of now we have VoLTE... nationwide," CEO John Legere said on the call.

T-Mobile was the first of the four largest US carriers to officially launch VoLTE. It first deployed in Seattle in May and has been rolling out to more markets since then. (See T-Mobile Beats AT&T, Verizon to VoLTE.)

For ongoing updates on LTE, visit Light Reading's dedicated 4G news channel.

The operator has also started deploying LTE in both new and old spectrum. "The first 700MHz sites are on air right now -- 700MHz handsets are being field tested now and should be available in the fourth quarter," Legere said. (See T-Mobile: Going Bananas for Low-Band .)

T-Mobile got access to this low-band spectrum thanks to a $2.4 billion deal with Verizon Wireless that closed in April. The spectrum allows T-Mobile to offer better suburban, rural and indoor coverage. (See T-Mobile: Going Bananas for Low-Band .)

The operator also recently spent $50.5 million on more 700MHz licenses, and is working with some broadcasters to move their transmissions so they don't interfere with possible 700MHz mobile services.

The service provider has also started to convert its remaining 2G network footprint to 4G. The first 1900MHZ 4G sites are now up, Legere said.

All told, T-Mobile's LTE network now reaches 233 million people in the US, and Legere says the operator will cover more than 250 million potential customers by the end of the year.

All this means T-Mobile is expecting to spend $4.3 billion to $4.6 billion on capital expenditure this year. The operator spent $947 million on capex in the second quarter of 2014, compared to $1.1 billion in the same quarter last year, and $947 million in the first quarter of 2014.

T-Mobile CFO Braxton Carter said he expects that figure "to ramp up later this year" as T-Mobile continues its 4G push.

T-Mobile broke through the 50 million subscriber market in its second quarter, adding 1.5 million subscribers net. It reported a profit of $391 million on revenue that grew 15% year-on-year to $7.19 billion.

— Dan Jones, Mobile Editor, Light Reading

(3)  | 
Comment  | 
Print  | 
Newest First  |  Oldest First  |  Threaded View        ADD A COMMENT
User Rank: Light Sabre
8/6/2014 | 4:53:24 PM
Re: Anyone *actually* used the VoLTE yet?
How will users even know if they're using VoLTE? 
User Rank: Light Sabre
8/3/2014 | 1:32:31 AM
Re: Anyone *actually* used the VoLTE yet?
In order to succesfully deploy VoLTE on a 3GPP network you need to be able to provide seamless call continuity, or hadoffs from VoLTE to legacy layers. For that you need an LTE-Advaced unique feature called eSRVCC (enhanced Single Radio Voice Call Continuity) which essentially handles the calls accross the technologies like a boss.

Well, the benefit of being last to enter the LTE game in the U.S. is that you get to pick the latest and greatest equipment, and considering that T-Mobile had $6+ Billion dollars from AT&T breakup fee, they've secured the best equipment that Ericsson and NSN had in 2012, and that was Release 10 or LTE-Advanced equipment.

This is why today T-Mobile can easily and seamlessly flip the switch and have VoLTE across the entire LTE footprint without major issues. T-Mobile's entire LTE footprint has been Release 10 since day one!

AT&T's network was for the most part deployed in 2011, and the equipment is mostly Release 9. In Release 8/9 you don't have eSRVCC mechanism, so call handoffs and continuity is pretty wonky. That's why they're taking a "per market" VoLTE approach while they're performing the neccessary upgrades to Release 10 market by market. Right now they have VoLTE in 3 areas including Minneapolis. 

CDMA 3GPP2 networks will have to go VoLTE Only route, as there isn't a solid mechanism that would handoff VoLTE to 1x, and that's a major problem. That's why Verizon will have to go nationwide VoLTE once their network is ready with AMR-WB codec, and Sprint doesn't even have an immediate plan to deploy VoLTE or use AMR-WB.

I've tried T-Mobile's VoLTE in NYC market, the calls are aboslutely stunning quality. If you're used to T-Mobile's HD Voice, this sounds even better. UMTS HD Voice is using 12.65kbps AMR-WB codec, while VoLTE-to-VoLTE is 23.85kbps. Gotta hear to believe!
User Rank: Blogger
7/31/2014 | 3:03:48 PM
Anyone *actually* used the VoLTE yet?
Anyone actually used the VoLTE yet? We wanna know...
From The Founder
Steve Saunders provides an overview of white box networking and introduces a new "slim line" version of the OSI 7-layer model.
Flash Poll
Live Streaming Video
CLOUD / MANAGED SERVICES: Prepping Ethernet for the Cloud
Moderator: Ray LeMaistre Panelists: Jeremy Bye, Leonard Sheahan
Wagner’s Ring
The Business Case for Open Source

11|30|15   |     |   (1) comment

Open source helps companies enhance infrastructure, undermine competitors' advantage and teach collaboration. But there are problems.
Between the CEOs
Centec on Ethernet Switching

11|26|15   |   09:58   |   (0) comments

Centec CEO James Sun talks to Steve Saunders about Ethernet switching and the white box revolution.
LRTV Custom TV
Delivering Service Agility in the Virtualization Era

11|25|15   |   5.41   |   (0) comments

Interview with Massimo Fatato, WW OSS Business Lead, Hewlett Packard Enterprise.
Wagner’s Ring
How Might Open Source Fail?

11|24|15   |     |   (10) comments

Open source, SDN, and NFV are looking inevitable – but performance, standards proliferation and regulatory capture could derail the movement.
LRTV Custom TV
NFV Lifecycle Orchestration – a Fresh Vision for Telco

11|23|15   |   6.40   |   (0) comments

Simon Osborne, CTO Comptel, and Heavy Reading's Caroline Chappell reveal the business impacts of new SDN and NFV, and what the term service orchestration actually means. Together they define Lifecycle Service Orchestration and how the virtualized future will look for telecoms operators.
Between the CEOs
Cisco's Virtual Role in Saudi

11|20|15   |   12:15   |   (2) comments

Light Reading founder and CEO Steve Saunders talks with Zayan Sadek, Regional Manager at Cisco Systems, about the competitive communications services market and advance of virtualization in Saudi Arabia.
LRTV Huawei Video Resource Center
Huawei Leads With Kubernetes for Cloud PaaS

11|19|15   |   08:26   |   (0) comments

Huawei is looking to Kubernetes as a key tool for building robust open source technologies for customers and partners, said Ying Xiong, chief architect of cloud platform at Huawei, in an interview with Light Reading West Coast Bureau Chief Mitch Wagner at the recent Kubecon conference.
Women in Comms Introduction Videos
WiC in London: The Highlight Reel

11|19|15   |   5:33   |   (1) comment

NetCracker's Mervat El Dabae headlines an inspiring morning in London with help from leading women from Vodafone, TalkTalk, Hyperoptics and Ciena.
LRTV Documentaries
Why Saudi's So Hot for New Tech

11|19|15   |   05:07   |   (0) comments

Light Reading's Steve Saunders reports from Saudi Arabia, a hyper-competitive market desperate to embrace the next generation of communications technologies and services.
LRTV Custom TV
Why Data Models Deliver More Value Than Information Models

11|19|15   |   5.08   |   (0) comments

Stefan Vallin argues that more automation is needed to manage end-to-end services and the hybrid networks they run on, and that data models are key to achieving this.
Telecom Innovators Video Showcase
SDN Management & Orchestration in the WAN

11|17|15   |   7.20   |   (0) comments

Carol Wilson and Packet Design CTO Cengiz Alaettinoglu discuss CSPs' SDN service delivery and assurance requirements. Learn about a modular approach to building automated control, orchestration and management functions for the WAN that are policy- and analytics-driven.
LRTV Custom TV
Flash Networks: Optimizing for Radio Spectral Efficiency

11|17|15   |   3:34   |   (0) comments

Today most optimization vendors only focus on optimizing voice or data. Ofer Gottfried, Flash Networks' CTO, shows how improving data throughput and maximizing spectral efficiency reduces capital and operating expenses while also providing a platform for user engagement.
Allot MobileTrends Report H2/2015 reveals how daily online behavior can be used to discover smarter ways to profile customers and propose valuable, real-time offers to them.
Hot Topics
Samsung: No Sale of Wireless Unit
Dan Jones, Mobile Editor, 11/25/2015
How Might Open Source Fail?
Mitch Wagner, West Coast Bureau Chief, Light Reading, 11/24/2015
Hong Kong Moments
Ray Le Maistre, Editor-in-chief, 11/26/2015
Facebook in Africa: Beauty or Beast?
Iain Morris, News Editor, 11/27/2015
Cable Gives Thanks for Business Services
Alan Breznick, Cable/Video Practice Leader, 11/27/2015
Like Us on Facebook
Twitter Feed
December 15, 2015
Virtualizing Cable Services
Webinar Archive
BETWEEN THE CEOs - Executive Interviews
Centec CEO James Sun talks to Steve Saunders about Ethernet switching and the white box revolution.
Light Reading founder and CEO Steve Saunders talks with Zayan Sadek, Regional Manager at Cisco Systems, about the competitive communications services market and advance of virtualization in Saudi Arabia.
Cats with Phones
Can't Find the Phone on Thanksgiving? Click Here
Check under the cat! (hint: bottom right)
Live Digital Audio

Broadband speeds are ramping up across Europe as the continent, at its own pace, follows North America towards a gigabit society. But there are many steps to take on the road to gigabit broadband availability and a number of technology options that can meet the various requirements of Europe’s high-speed fixed broadband network operators. During this radio show we will look at some of the catalysts for broadband network investments and examine the menu of technology options on offer, including vectoring and for copper plant evolution and the various deployment possibilities for FTTH/B.