Page *Standard 3G HandsetFemtocell signal covers ~5,000 sq. ft.AT&T Mobility WANRadio Access Network (RAN)Objectives:Improve coverage and optimize data rates while delivering full AT&T Mobility feature parity.Enables AT&T to maintain the consumer voice relationship and some of the related revenue.Enable special in-home pricing allowing AT&T to effectively compete with recent service introductions from T-Mobile and Sprint. Optimize the potential to defer investment in RAN capacity by offloading voice / data traffic.Reduce the cost of delivering Mobility calls in the home.Customer Home3G MicroCellA femtocell home base station connects to the subscribers broadband modem, allowing customers to use their standard 3G handset to complete voice calls and data sessions as IP. Mobility Core NetworkBroadband IP NetworkIP Gateway

RESPONSIBILYPage *Provide end-to-end network operational/technical support of the Femtocell system Established Tier 1, Tier 2 and Tier 3 Troubleshooting Flows AT&T Tier 1 - baseline knowledge and access to maintenance tools AT&T Tier 2 - advanced knowledge of network systems

SME Breakout Plan for training and development Actively Engaged with Support Organizations Developing Troubleshooting Call Flows Developing Operations Support Flows Defining Change Management Processes Developing Tools Alignment with Wireless and Wireline Organizations Assigning Ownership Facilitating Regular Meetings for Team Read Outs Developing One AT&T Strategy

Page *3G MicroCell Operations Team

Page *3G MicroCell Operations Team

Page *Roles and Responsibilities 3Day-to-day operation of the ASR5Ks 1) Health Checkup2) Troubleshooting 3)

provisioning of the system, e.g. EMSserver managementrelationship management with partners. will also work closely with the Performance teamidentify scripting/automation opportunities to allow for more swift detection of Femto network issues.

Provisioning:

FemTo Access Point (AP)

TR-069 Client

Provisioning SystemBAC Broadband Access CenterRDU Regional Distribution UnitManages the generation of all configurationsMaintains the authoritative databaseRepresents the central point through which all API requests must passSupports external clients, OSSs, and other provisioning functions through the provisioning APIFPG Femto Provisioning GatewayXML over HTTP interface between the Switch Control and the RDUADS Auxiliary Data StoreLocation based data selection (i.e. Polygons) to identify which Access Controller (AC) and Provisioning Group (PG) a FAP should be associated toCalculation of Over-The-Air Location Area Code (OTA LAC), and Service Area Indicator (SAI) based upon lat / long coordinates from the provisioning flowsUpdate IMSI changes within enabled white lists to keep up with SIM card changes and their impact within the Femtocell networkDPE Device Provisioning EngineLast-step, device-configuration, file handlingCommunication of the configuration files through an embedded TFTP serverEmbedded ToD serverIntegration with Cisco CNS Network RegistrarCached-device configuration and provisioning information

Provisioning: Customer Experience Consumer logs into FOAM (Femto Online Account Management) www.att.com/3Gmicrocell Consumer enters EID - System checks to see if EID is valid If EID is valid, Consumer enters in Address Address is validated as in Licensed Coverage Area (-98dBm) (MTI DB) If valid address, a message containing the expected coordinates is sent to BAC from SC (Switch Control) to start the search for GPS (All done via TR-069) GPS coordinates are sent back to BAC and compared based on a set tolerance level (set per AC) If valid, then activate message is sent back to SC to activate in IT systems and then SC sends back all necessary information for activation (Expected & Actual Lat/Long, Frequency to radiate on..) Info is downloaded to AP via the BAC and NWL starts searching the Macro environment to set neighbors, power. AP starts radiating (3G Light is solid green) TR-069 standards state that the AP must initiate contact with the network and not vice verse In an emergency situation, the AC can initiate a ping to the AP to open a connection to the DPE The AP is designed to initiate the connection to the RDU via a set URL, which is hardcoded in the AP at manufacturing Once the address/coordinates are verified the AP is directed to its Regional DPE for further instructions Before the AP starts radiating it is assigned to its home AC

Page *3G MicroCell Logical Network Architecture

3G FemtoCellNetwork

3GPP Core NetworkPS & CS

Page *3G MicroCell Logical IP Connectivity

RAN SystemAC Access Controller (IPAccess term)Standards name is Femto Gateway (FGW)Controls up to 20K APs and aggregates them into a single IuCS (Circuit Switched) and IuPS (Packet Switched) interface to the Core Network. The MSC (CS) and SGSN (PS).

AP Access PointCustomer Premise Devise that connects to the customers internet broadband

EMS/OSS Architecture OverviewPage *

EMS SystemRMM Remote Management ModuleTR-069 stack and frameworkFemtocell specific TR-106 data modelFirmware download support for Radio, GPS, Router and RMMTranslation and workflow logic for FAP provisioning to appropriate Firmware modulesGPS chip interfaceExposes FAP MIB via TR-069 remote procedure callsInitiate SSL connectionsControls Network Listen and neighbor list updateControls statistics randomization and uploadInitial redirection from National DPEStores Service Provider specific configuration parameters

OMC-R Operation and Maintenance Center RadioConsists of the Server and the ClientProvides configuration management for Access Controllers.Generates Alarms for the Access Controllers and forwards them to the Fault Management System.

Statistics ServerSecure interface to FAP networkHigh volume file transfer serverInterface to HP PI system

WiresharkThis will be replaced with either an Agilent or Tektronix ProbeUsed for network troubleshooting and analysis

Femto EMS System (cont)NNM Network Node ManagerFault Management - OMUAutomatically discover the IP nodes in your network.Automatically monitor your networks status through the map interface and the event browser interface.Manage any vendor device that supports the Simple Network Management Protocol (SNMP). NNM manages both standard and enterprise-specific Management Information Base (MIB) objects.Include new enterprise-specific Internet MIBs in NNMs MIB. Once you have loaded the new MIB module on the management station, you can access any of the MIB objects defined in that MIB module.Build new MIB applications (without programming) for Internet-standard and enterprise-specific MIBs. Once you have built a MIB application, you can monitor objects through the menu bar.Define event thresholds for MIB objects; for example, an event can be generated when the disk usage on a particular device exceeds a limit.Define actions to be taken upon receipt of an SNMP trap.Integrate your own fault detection applications into the menu bar to yield an integrated management solution.Diagnose network faults and performance problems from one location, and diagnose problems by looking at trends over time. This includes customizing and automating the monitoring of your network and the response of management stations to events.Launch Systems Management Server (SMS) Administrator, or view the SMS properties of a node.Launch Windows operating system applets such as the Event Viewer, Performance Monitor, and Registry Editor from within NNM on remote systems with the Windows operating system.Peformance Management - PIAutomatically monitor your networks status.Collect historical MIB information about MIB objects events, store the data for trend analysis, and graph collected data. This helps you determine performance trends.Automatically set thresholds based upon standard deviations of historically collected data.Automatically collect data and generate General Availability and General Inventory reports.Manage and modify reports using the NNM Report Configuration Interface.Manage information being collected and stored in the data warehouse.Integrate your own performance monitoring applications with the menu bar to yield an integrated management solution.Configuration Management NAS UIStore critical configuration information from devices such as routers and switches.Track inventory of the devices on the network.Generate snapshots of your network before any departmental moves to speed reconstruction after the move.

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