1. September 15, 2003FG3 Report FOCUS GROUP 3 Interoperability Report to NRIC VI Council September 15, 2003 Cliff Naughton (Boeing)

2. September 15, 2003FG3 Report MISSION The Committee [FG3] will prepare analyses and, where appropriate, make recommendations for improving interoperability among networks to achieve the objectives that are contained in Section 256 of the Telecommunications Act of 1996, with particular emphasis on ensuring "the ability of users and information providers to seamlessly and transparently transmit and receive information between and across telecommunications networks."

3. September 15, 2003FG3 Report FG3 Participants

4. September 15, 2003FG3 Report FG3 Status Positive, Co-operative team dynamic –Team Composition (31 members) Service Providers (wireline, wireless), Vendors, OEMs, Customers, Industry associations Methodology –Interoperability focus is Voice-over-IP networks with circuit switched networks, both wireline and wireless –Gap analysis from published work of standards bodies (ITU, IETF, etc.) and accepted industry practices to derive best practices and recommended areas of research Report and Best Practices recommendations in Final Draft

5. September 15, 2003FG3 Report Scope of VoIP Interoperability Report

6. September 15, 2003FG3 Report Scope of VoIP Interoperability Report Allow any PSTN and VoIP user to place and receive calls from other users as identified by an assignment of a North American Numbering Plan (NANP) number to that user. Support portability of NANP numbers across providers for numbers assigned to VoIP users Provide the means for a VoIP device to access basic PSTN functions, such as using a telephone keypad to interact with a voice mail system Support PSTN essential services, such as E911, and TTY/TDD Provide minimum interoperation of VoIP service when features are not available on the other networks Identify VoIP signaling protocols used between service provider (and some enterprise) networks Identify methods to achieve VoIP calls of acceptable quality and delay Identify VoIP protocol standards that could be used to support consumer telephony features (e.g., caller ID, call waiting, hold, etc.) Provide support for CALEA

7. September 15, 2003FG3 Report Also Included Voice coding standards for user VoIP devices and gateways within and between service provider and/or enterprise networks Signaling protocols for user VoIP devices and gateways within and between networks (e.g., H.323 and SIP). Quality of service requirements Support over certain types of access networks (e.g., satellite, 802.11 WiFi). Specifics of vendor interoperability, which is achieved through service provider interoperability

8. September 15, 2003FG3 Report Out of Scope of VoIP Interoperability Report Current PSTN and TDM network interoperability VoIP end-device (e.g., SIP phone) portability between service providers “Best effort VoIP with no service provider involved” (e.g., intra- enterprise or between VoIP devices over the Internet that do not involve a service provider). Protocols and interfaces used within a service provider’s network (e.g., Media Gateway Control, Megaco). Non-consumer voice features (e.g., Centrex, GETS). VoATM and VoMPLS Only interfaces and protocols between networks or service providers are in scope. Interfaces and protocols between a network and a user/subscriber or interfaces internal to a network or service provider are out of scope

9. September 15, 2003FG3 Report Scope of VoIP Interoperability Report TDM IP SP A IP SP B PSTN SP A PSTN SP B SIP/H.323 Public ENUM DNS SIP/H.323 VoIP QoS VoIP QoS VoIP QoS SIP, SIP-T, BICC, H.323, CMSS TDM LNP VoIP=Voice/RTP/UDP/IP Internal to SP Interfaces Internal to SP Interfaces MEGACO/ H.248 MEGACO/ H.248 SS7 TDM SIP/H.323 SS7 In Scope Out of Scope SS7 Private ENUM DNS Non-ENUM Private Directory ???

10. September 15, 2003FG3 Report Significant Gaps and Recommendations ENUM (E.164 Number Mapping) –Policy Decisions and Assignment of Administrators –Synchronization of Public ENUM with LNP E911 – Need Solution for VoIP Mobility Network Management and Control –Handling of Overload Scenarios between Different Technologies and Networks Use of Satellites and Wireless for Communication during Emergency Situations Coordination of QOS Metrics and Mechanism Standards Security Areas Relevant to VoIP –CALEA, Firewalls, DNS, Denial of Service

11. September 15, 2003FG3 Report FG3 Deliverable Final Report to Council including Best Practices Recommendations at December 2003 meeting.