Contents

1. MMS Roamingand MMS Interconnection CDG International Roaming TeamSteven J. Willhoff June 26, 2003

2. Contents • MMS Brief Overview • MMS roaming and MMS interconnection –definitions • MMS interconnection • Network • Background information • MMS Interconnection & Charging • Technical/Business Considerations • MMS roaming • Network • Background information • Charging • Mobile Number Portability • MMS IOP

3. Multimedia Messaging Service • MMS Represents an evolution to the existing SMS and EMS • A non-real-time store & forward model • Incorporates MIME Multipart Objects with SMIL Presentation • Main interfaces • The client – Server MM1 • The Relay/Server – Relay/Server MM4 • The Relay/Server – Value Added Service Provider MM7 MM1 Interface

4. Multimedia Messaging Service • Multimedia Messaging Service goes far beyond its predecessor - MMS : • is a standardized person-to-person and application-to-person messaging service • provides the ability to send and receive messages using a combination of text, audio, graphics, image, video, animation • provides the ability to send and receive messages between terminals as well as between terminals and content servers • By building on the success of the SMS business model, MMS has strong potential to become a mass-market mobile data service

5. Multimedia Messaging Service MMS Architecture Overview

6. MMS Interconnection and MMS Roaming - definitions - • MMS Roaming = subscriber can send and receive Multi-Media Messages when roaming in another network • MMS interconnection = subscriber can send/receive a Multi-Media Message to/from a subscriber of another operator's network • MMS IOP = Insuring Interoperability of equipment from different vendors and in different operator networks Prerequisites for MMS roaming and interconnection: • MMS roaming - • Packet Data roaming agreement should be signed between the operators • Packet Data roaming must be working between networks • SMS roaming agreement should been signed between the operators • SMS roaming must be working between networks • MMS Interconnection – • MMS interconnection agreement should been signed between the operators • MMSCs must be interconnected through the inter MMSC interface (3GPP2 specified MM4 – X.S0016-340)

7. MMS Interconnection • MMS interconnection = subscriber can send/receive a Multi-Media Message to/from a subscriber of another operator's network

8. MMS interconnection - background - • The CDG MMS Team is planning to develop a technical MMS inter-working document for its members. • There are three main scenarios to arrange MMS interconnection: • Operators use a Packet Data Exchange Network • VPN over Internet • Leased lines • In the end it is operator’s decision how to handle interconnection. MMS interconnection arrangements between two operators include both technical and commercial issues.

9. MMS Notification MMS Sending Inter MMSC Sending SS7 Network MMS Retrieval MMS Interconnection MSC MSC 1. 3. 5. SMSC SMSC 2. Packet Data Roaming Backbone BS BR BS BR PCF PCF PDSN PDSN 4. MMSC WAP GW WAP GW MMSC Operator A Operator B

10. MMS Interconnection & Charging • In order to handle MMS interconnection, operators have to solve interconnection charging both nationally and globally • MMS interconnection from an operator’s point of view: • Bilateral MMS agreement between two MMS operators • Both collect traffic statistics: e.g. number of messages & volumes • Bilateral clearing based on statistics and agreements • MMSC CDR contains destination information • MMS inter-working from the end-user’s point of view: • End-user charging should be as simple as possible • Same model as used in SMS? • Message sender can be charged a premium for sending MMS to another operator’s subscriber?

11. MMSC support for MMS interconnection • MMSC MM4 interface complies to 3GPP2 X.S0016-340 • MMSC collects Inter MMSC statistics. They may include: • name of the operator • direction of the message • number of messages • total size of messages • number of delivery/read reports • total size of delivery/read reports

12. How to make MMS interconnection • Operators all over the world should have the same target: • MMS for the Mass Market – a Global, Ubiquitous Service • Building blocks • MMS Roaming • National MMS interconnection • International MMS interconnection • Success through Operators’ co-operation • Consistent overall technical design • Manage your vendor relationship • Demand evidence of MM1, MM4 interoperability • Take care of your end-user needs • Simple MMS pricing • Help Desk services

13. Key technical issues for operators • How does the sending MMSC know where to send the multimedia message? • How does Mobile Number Portability work together with MMS? • What are the implications of Mobile Number Portability? • Do we have to maintain static tables on the MMCS? • What network should be used to connect with other operators? • When is it beneficial to use a 3rd party data network as opposed to standard Internet?

14. Key technical issues for operators • Are changes needed to existing inter-PDSN networks? • Should a 3rd party data network handle this or operators interconnect directly? • What DNS hierarchy should be used? • Should ENUM be used? • How will we know whether we have an interoperability or interconnection problem? • How are security issues handled? • What if we have special routing requirements? • How is inter-operator billing handled?

15. MMS Roaming • MMS Roaming = subscriber can send and receive Multi-Media Messages when roaming in another network

16. MMS Roaming is based on Packet Data Roaming - background - • Packet Data Roaming is defined by the CDG International Roaming Team. • MMS Requires basic principles (IP-addressing, DNS, connectivity, ...) • When end-user is roaming, Multimedia Messages are sent via normal Packet Data traffic between the home operator network and the roaming operator network • Roaming customer must be able to receive MT SMS for MMS Notification

17. SS7 Network MMS Retrieval MMS roaming • Sender is roaming • Packet Data roaming Operator B Subscriber Roaming MSC MSC MMS Notification MMS Sending 1. 3. SMSC SMSC PDSN Roaming Backbone BS BR BR BS PCF PCF PDSN PDSN WAP GW WAP GW 2. MMSC MMSC Operator A Operator B

18. 3. 1. SS7 Network 2. MMS roaming Operator A Subscriber Roaming • Receiver is roaming • Packet Data roaming MSC MSC MMS Notification MMS Sending SMSC SMSC PDSN Roaming Backbone BS BR BR BS PCF PCF PDSN PDSN MMS Retrieval WAP GW WAP GW MMSC MMSC Operator A Operator B

19. MMS Roaming & Charging • MMS roaming from operator point of view: • MMS roaming traffic is Packet Data roaming traffic – the visited network does not even need to support MMS • Bilateral Packet Data roaming agreement between two operators • Both collect statistics: traffic volumes • Bilateral clearing based on statistics and agreements • MMS roaming from end-user point of view • End-user charging should be as simple as possible Receiver is roaming: • Sender pays: Basic MMS per message fee • Roaming receiver pays: Volume based “roaming premium” packet data traffic fee when retrieving the MMS from the home MMSC Sender is roaming: • Roaming sender pays: Volume based “roaming premium” packet data traffic fee when sending the MMS via visited network to home MMSC • Receiver pays: Basic MMS per message fee • KUVA!!

20. MMS roaming, MMS interconnection & Mobile Number Portability (MNP) • Operators have to agree on how to handle MMS subscribers, who have mobile number portability services (= these users use ex-operators MDN number) • MNP does not exist in every country • Not all operators are required to handle MNP themselves • When offering MMS services to MNP subscribers, operators have to solve • National MMS number portability • International MMS number portability • It is recommended operators use the same mechanism in MMS MNP that they will use for voice MNP • Two possibilities when MMS sent to MNP subscriber: • Originator operator will use its MNP function and check the new-operator of the MNP subscriber • Originator operator will send MMS to MNP subscriber’s ex-operator MMSC. Ex-operator will re-route the MMS to the new-operator’s network

21. MMS IOP • MMS IOP = Insuring Interoperability of equipment from different vendors and in different operator networks

22. MMS IOP MMS IOP: • MMS interoperability tests (IOTs) can be done under bilateral NDAs between MMS terminal and MMSC vendors – This is cumbersome • MMS interoperability issues are beginning to be discussed in the CDG MMS Team – MM4, non-OMA MM1, MM3, MM7 • MMS IOP activities also occur in OMA – covering OMA/WAP MM1 • CDMA – GSM IOP is needed for global MMS – requires coordination with GSMA

23. Focus of MMS IOP • The Main interfaces to be verified in MMS are the interface between the terminal User Agent and the network Server (MM1), and between network Servers (MM4) • Compatibility in terminal Content Handling and Presentation, i.e. how the messages look on the phone displays

24. The OMA MMS Conformance Document • The OMA MMS Conformance document: • Creates guidelines that need to be implemented to ensure interoperability of MMS functionalities between terminals and network elements produced by different manufacturers (MM1) • Defines a minimum set of requirements: • Content of the message • Allowed elements and attributes of the presentation language • Media content format

25. Summary • MMS roaming is possible when the two operators have Packet Data roaming in place, and MT SMS roaming in place. • MMS interconnection is possible only when the originator and receiving MMSCs are inter-working with each other. Many business/technical issues need to be resolved. • MMS IOP is required to insure compatibility across all interfaces • Critical Interfaces are MM1, MM4 • Important Interfaces are MM3, MM7 • The CDM MMS Team welcomes your input of these topics • Join the MMS_ALL email list for CDG MMS Team email discussions • Conference Call Tonight – 7:00pm Eastern • Number - 800.503.2899 • Access - 249-0588 • Passcode -311721888