FIRSTNET CORE Exclusively for First Net users from

FIRSTNET CORE Exclusively for First. Net users, from the dedicated, tested and certified core • • • Core redundancy and hardening • Logically separate network with its own PLMN ID and SIMs • 6 geographically diverse & redundant cores RAN redundancy and hardening • Cell towers overlap coverage for redundancy • All assets have battery back-up with minimum of 4 hours, most have 6 -8 hours • Generators on key sites • All new site builds - generator or fuel cells Enhanced security: designed with a defense-in-depth approach combining standards-based at the network layer and multiple solutions at the application layer > INTRODUCTION > SOLUTIONS > EXTENDED PRIMARY > CHECKLIST > DOWNLOADS © 2018 AT&T Intellectual Property. First. Net, First Responder Network Authority, and First. Net logo are registered trademarks and service marks of First. Net, an independent authority within the U. S. Department of Commerce. All other marks are the property of their respective owners.

NETWORK STRATEGY Aggressive RAN build • AT&T awarded best US network in 2018 Global Wireless Solutions ranking and fastest US network in 2019 Ookla speed test • Deploy coverage in rural areas to provide consistent customer experience • Ability to request deployables on demand or purchase FRMZ deployables for coverage extension and coverage replacement • Access to 40, 000+ Wi-Fi Hotspots and 6, 000+ DAS • Band 14 addition to network for expanded coverage & capacity > INTRODUCTION > SOLUTIONS > EXTENDED PRIMARY > CHECKLIST > DOWNLOADS © 2018 AT&T Intellectual Property. First. Net, First Responder Network Authority, and First. Net logo are registered trademarks and service marks of First. Net, an independent authority within the U. S. Department of Commerce. All other marks are the property of their respective owners.

FIRSTNET BAND 14 TRAFFIC MANAGEMENT Serve AT&T Users AT&T Core AT&T UE prefers AT&T Bands MOCN All AT&T Bands B 2/B 4/B 17… Transport e. Node. B Serve First. Net Users FN Core FN Band B 14 FN UE prefers Band 14 MOCN • AT&T has implemented MOCN feature allowing first responders access to all AT&T LTE bands • 3 GPP SPID feature used to control B 14 preference for users • SON load balancing capabilities along with preemption used to manage traffic on Band 14 3 AT&T Devices Secondary user PLMN=310 -410 First. Net Devices Primary user PLMN = 313 -100 > INTRODUCTION > SOLUTIONS > EXTENDED PRIMARY > CHECKLIST > DOWNLOADS © 2018 AT&T Intellectual Property. First. Net, First Responder Network Authority, and First. Net logo are registered trademarks and service marks of First. Net, an independent authority within the U. S. Department of Commerce. All other marks are the property of their respective owners.

FIRST PRIORITY TM The only network that offers First Priority™ - a 24/7/365 priority and preemption solution for voice, text and data • First Priority™ is always on and will provide primary users with an evolving set of Qo. S, priority and preemption that will exceed anything previously available to first responders • First. Net users are exempt from throttling in the country • Extended primary users can be uplifted to First Priority™ status on the First. Net core • Top-level “incident priority” supersedes all other users on a temporary basis • Primary users have the ability to pre-empt all other users (except 911 calls) > INTRODUCTION > SOLUTIONS > EXTENDED PRIMARY > CHECKLIST > DOWNLOADS 4 © 2018 AT&T Intellectual Property. First. Net, First Responder Network Authority, and First. Net logo are registered trademarks and service marks of First. Net, an independent authority within the U. S. Department of Commerce. All other marks are the property of their respective owners. 4

FIRST PRIORITY TM RAN Qo. S Mechanisms First. Net AC=12 HPA QCI, GBR, Non-GBR RRC Connection Requests Access Control Barring 1 Commercial AC=0 -9 Non-HPA Qo. S Preemption Priority Call Admission Control Default/Dedicated Bearer Preemption Admission Control (UE Contexts) UE Admit UE Reject o Does the UE have Admission Control (Bearer Resources) sufficient priority to RB Reject RB Admit access the network? o What is the UE’s 2 Access Class? o Does RAN have enough resources? PGW MME EPC Core PCRF HSS First. Net Applications o UE Context (Max Allowed UE) o Bearers (Max Allowed Bearers) AT&T and Globe logo are registered trademarks and service marks of AT&T Intellectual Property. First. Net, First Responder Network Authority, and First. Net logo are registered trademarks and service marks of First. Net, an independent authority within the U. S. Department of Commerce. All other marks are the property of their respective owners.

6 (Over) Simplifying the LTE Quality of Service Model Access Class QCI ARP Value