ISR Service Options and Key Considerations

IRT Meeting TampaLokdeep Singh – lsingh@worldcell.comJune 15th, 20007

Agenda

ISR Solution components Implementation Options Key Implementation considerations WorldCell introductions Open Discussion

ISR Challenges & Solution Components

IIF – Compliance with J038B and 3GPP2-CDMA-GPRS Roaming-X S0034 standards

GSM roaming agreements

SIM/RUIM cards

Dual-mode handsets

Data clearing and settlement

Fraud prevention

Support for home services

Customer support for GSM/GPRS

GRX connectivity*

IIF

Roaming

ClearingMMMF

Handsets

Fraud

Managmnt

SIM/RUIM

GRX

Customer Care

ISR Implementation Options

CDMA carrier hosted - Build your own IIF hosted by CDMA home carrier GSM roaming provided by a GSM Sponsor or through its own inter-standard

roaming agreements Secure SS7 connectivity to GSM networks

Hosted IIF + GSM Sponsor IIF hosted by a roaming service provider (RSB) GSM roaming agreements through a third party sponsor network SS7 connectivity to GSM networks through the GSM Sponsor Network

Fully-hosted RSB IIF hosted by a GSM carrier GSM roaming agreements provided by the same Service provider Service provider acts as a CDMA roaming partner to the CDMA home

network

Solution #1: CDMA carrier-hosted - Build your own

IIF hosted by CDMA home carrier GSM roaming provided by a GSM Sponsor or through its own inter-standard

roaming agreements Secure SS7 connectivity to GSM networks

CDMA Home NW

IIFGSM

Sponsor

GSM Visited Network

CDMA hosted IIF

DCH

TAP3TAP3

CDMAARP CDR

Feed

CIBER

Solution #2: “Hosted IIF + GSM Sponsor”

IIF hosted by a roaming service provider GSM roaming agreements through a third party sponsor network SS7 connectivity to GSM networks through the GSM Sponsor Network

CDMA Home NW

IIFGSM

Visited Network

Hosted IIF

GSM Sponsor

DCH

TAP3TAP3

CDMAARP

CDR

FeedCIBER

Solution #3: Fully Hosted Option

IIF hosted by a GSM carrier GSM roaming agreements provided by the same service provider Service provider acts as a CDMA roaming partner to the CDMA home network

CDMA Home NW

RSB as

CDMA RPIIF

RSB as

GSM SP

GSM Visited Network

Fully Hosted ISR Service

DCHCDMAARP

TAP3

CIBER

TAP3

ISR Implementation - Business Considerations

Impact on existing CDMA roaming processes: Will roaming implementation process be different from CDMA-CDMA roaming? Daily Business processes different from CDMA roaming? Requirements for multiple agreements (roaming, billing/clearing,

inter-operability SP)? Billing and clearing through your existing ARP?

CIBER records (Voice), CIBER 32/AAA (Data) or proprietary CDR file Multiple price points or customized zone-based billing? Net-settlement or Bilateral settlement? Currency USD or Euro/Local- Currency fluctuations? Responsibility for rejects?

Subscription fraud prevention mechanisms applicable to ISR in GSM mode?

White-label/customized offering?

Does this solution address your customer (Enterprise/Gov’t/consumer) requirements?

ISR Implementation - Technical Considerations

Interoperability Compliance with J038-B and 3GPP2 X S0034 standard for CDMA-GPRS roaming Supplementary service support, service codes Handling of TLDN- MSRN mapping Voice Mail Deposit, Voice Mail Retrieval and Notification Solutions RUIM and IS751 (Use of IMSI) support Inter-standard Data Solution

Support for MIP? GRX connectivity required? Leased lines or CRX connectivity?

SMS delivery solutions Does ISR provide increased SMS delivery footprint? SMS billing and clearing

Dual IMSI support may be important to some carriers Maintenance and node recovery handling (URD-GSM MAP “Reset”)

ISR Implementation - Technical Considerations

Service Impact on core network, existing processes, troubleshooting techniques etc. Troubleshooting and customer care process.

One step resolution is the key Visibility to GSM/CDMA traffic ( ANSI MAP, GSM MAP, AAA traffic) GSM sponsor and IIF provider integrated customer care?

Fraud Prevention Mechanisms HUR V/S CDMA Fraud NRT CDR exchange

Product Roadmap MEID, IS751, NRTRDE support

Traffic Redirection and Selective Roaming Restriction PRL management needed in GSM mode? GSM uses PLMN file that works very

differently than PRL

ISR Implementation - Technical Considerations

Handset Frequency bands ( Quad Band/Tri-band)

Support for OTA in GSM mode

Support for USSD, MN file (Voice Mail #)

Shared files in both modes (Phone book/contacts)

RUIM Support by the handset

Network Selection behavior in GSM mode- Interaction with Traffic steering if implemented

WorldCell Fully-Hosted Solution Overview

Fully-hosted ISR Solution isan IIF hosted by a GSM carrier, providing ALL components of the ISRservice, while preservingthe standard CDMA network interfaces, existing CDMAroaming processes,clearing and net-settlementprinciples

WorldCell Fully-Hosted Solution benefits

Business Considerations: Implementation and operations similar to CDMA roaming Single agreement, single point of connectivity Billing and clearing in CIBER. Net-settlement in US currency White-label offering Low CAPEX

Technology Considerations Full compliance with standards and additional custom features MIP for GPRS/EDGE roaming Support for home services, Optimal Voice Mail deposit

Service Considerations Centralized- fully hosted service One step problem resolution – Integrated IIF and GSM customer care Seamless roaming into GSM/GPRS

WorldCell Fully-Hosted Solution Overview- ISR

V-DCHSP-DCH TAP 3.XCDMADCH

ISR SP

MIP Tunnel

(GRE/ IPinIP)

GTP

CIBER

About WorldCell

Licensed GSM operator in Iceland Viking Wireless Roaming agreements: 291 Networks and 160 Countries

Roaming Service Bureau Provides interoperability and roaming services to North American and

international wireless operators Converged platform that supports voice and data across multiple

technologies including GSM, CDMA, WiFi Global Enterprise Managed Services

The leading provider of voice and data wireless services to the US Government outside the United States

Provides enterprise security to mobile devices Mobile Mind (acquired 2005)

Smart CARD (SIM/USIM) and Mobile Application Development and Management

HQ in US with regional offices in Brazil, Germany, Japan and Iceland

ISR Service Options and Key Considerations

IRT Meeting TampaLokdeep Singh – lsingh@worldcell.comJune 15th, 20007