Focus Areas Stay ahead of capacity needs – Network Densification Network modernization

Densification Drivers EBS/BRS is where they most of their holding. Not very useful right now. As time goes on they may be able to tap into it. You must use TDD technology in EBS/BRS. Thus, the comment on limited ecosystem. EBS is also allocated to religious and education institutions as well as them. It’s a site based licensed as opposed to geographic. So, a school can license it for a location and its use to other around it are limited.

Technology Leadership More Customer & Enterprise Solutions Spider Cloud Femto Wi-Fi Incoming Call Multiple Endpoints Advanced Calling 2.0 Better User Experience Carrier Aggregation Coordinated Scheduling Antenna System Upgrades

Downtown Chicago Growth Plan CINR DISTRIBUTION (%)

Metro Chicago Densification Plan

4G In Building Challenges Provide Voice Experience Parity with CDMA Upgrade in building systems to 4G 4G capacity solutions IBS driven with dedicated RF sources ( i.e. small cell, eNodeB) OTA (Over The Air Systems/Repeaters (Passive/Active)) Requires Fiber/Ethernet backhaul – additional cost consideration for ROI Customer benefits from dedicated capacity New in building solutions focus on 4G only solutions Femto cells for smaller deployments use customer provided backhaul Spider Cloud/ Ericsson DOT solutions reduce cost using distributed RF using Ethernet CAT 5/6/7 cabling – (Backhaul still required, 1/3 cost of traditional DAS dependent on access to existing Ethernet cabling) Preferred solution requires network team involvement

Design Philosophy In-building Small Cells Emerging indoor solutions 700MHz and AWS frequencies Installed directly indoors Or used to drive in-building DAS Emerging indoor solutions Augmenting in-building coverage and capacity Dedicated capacity

Design Philosophy Enterprise Femtocells Very localized coverage Deployed individually or as coordinated cluster Customer provided backhaul Minimum requirement 25Mbps+ Network Owned asset

2015, 2016, and Beyond 2016 2015 2017

4G In Building 2015 54 B2B upgrades 4G capacity add Upgrade in building systems to 4G 4G capacity add 18 Unique locations Notables : Willis Tower, JR Thompson Center, 155 N Wacker, Museum Of Science and Industry, CME Board Of Trade (Trading floors only), Alliant Energy Center Malls : Orland Square, Chicago Ridge, River Oaks, Cherryvalle Hospitals : Decatur Memorial, Northshore Hospital (Skokie) Hospitality : W Hotel Lakeshore Dr, Hilton Northbrook, Westin Michigan Customer benefits from dedicated capacity AWS Upgrades (XLTE) 14 Unique locations Notables : Union Station, McCormick Place, Notre Dame, Wrigley Field, Chicagoland Speedway, Camp Randall, Bradley Center, Children’s Memorial

eFemto: What is it? <50k sq. ft. <50 Mbps MME S-GW <50k sq. ft. <50 Mbps S1-C S1-U CAT 5,6,7 HeNB GW SeGW IPSec Brief Product Specification 250mW per branch (2Tx – 2Rx) Band 4 or Band 13 (Selective) 64 Active Users GPS receiver SON – Plug & Play Operation Customer Backhaul >25Mbps (scale by #users) Deployment UseCase Ideal for small buildings or enterprises Plug and play deployment Data Only FoA – Dec 2014 Single Operator Use enterprise transport $2200 per unit

eFemto Coverage Model  

eFemto Capacity Solution Capacity Solution Strategy Target in-building locations within congested 4G macro sectors Remove 4G usage from the macro cell by providing dedicated capacity to the customer using an eFemto

Ericsson DOT System 100k+ sq. ft. 100+ Mbps MME S-GW SeGW S1-U S1-C RD – Radio DOT 100k+ sq. ft. 100+ Mbps Analog RF CAT 5,6,7 IRU – Indoor Radio Unit Fiber (CPRI) IPSec DU – Digital Unit Brief Product Specification Radio DOT (RD) Active Antenna, 50mW per branch (2 Tx, 2 Rx) Single Band per DOT (B13 / B4) IRU (Indoor Radio Unit) Multi-cast up to 8 RDs Integrated PoE source Digital Unit (DU) Baseband - up to 3000 Active users Macro Feature Parity 12 IRU per DU (12 LTE Cells) Deployment Use Case Large buildings, campus Buildings with strong Macro interference Single Operator Enterprise or Dedicated Transport or EBH User Trial – 3Q 2014, FoA – Planned 1Q 2015 Commercial available 2Q2015

SpiderCloud E-RAN System MME S-GW SeGW S1-U S1-C RN – Radio Node 50k+ sq. ft. 100+ Mbps CAT 5,6,7 IPSec SN – Services Node Brief Product Specification Radio Node (RN) 125mW per branch (2Tx, 2 Rx) Band 4 + Band 13 (or single band) 64 Active Users per band Services Node (SN) Single S1 Interface, Single IPSec Interface Centralized controller - mobility, resource management SON, Interference Coordination Single GPS Receiver Deployment Use Case Medium-large buildings, campus Designed for multi-cell clustered deployments Single Operator Enterprise or Dedicated Transport or EBH User Trial – Ongoing, FoA – Planned 4Q 2014 Commercial available 3Q2015