1. 1 Any to Any Connectivity For Everyone? (Communication Hub Model) Len Bytheway Australian Communication Exchange Welcome

2. 2 There are tens of thousands of textphones (TTYs) used in Australia and hundreds of thousands used in the USA - they work and people love them… why change? If it ain’t broke…?

3. 3 TTYs were developed from old teletype machines discarded (EOLed) in the 1960s. They operate: 50 bits/sec (45.45 in the USA) Use 5 bit Baudot code (Dev’t 1874) No Carrier Half Duplex Some can be acoustically coupled They are basic, cheap and work consistently About the TTY

4. 4 World has adopted multiple textphone standards European Deaf Telephone (EDT) Minitel (V.23 based systems x 3) DTMF (phone dial tones) ASCII (V.21, Bell 103 @300 baud) Baudot TTYs (50 & 45.45 baud) Australia is the only country in the world currently “standardised” on 50 baud Baudot TTYs TTY Standards?

5. 5 Lack of TTY access via mobile networks (esp. to text Emergency Call Service 106) Deaf people have ‘adopted’ mobile phone technology - SMS (reliability issues) Problems with TTY

6. 6 Emerging Technologies incompatible with TTYs Wireless local loop (WLL) & Internet telephony as standard telephone services (STS) NGN & IP services? Problems with TTY

7. 7 Availability of V.18 standard (ITU) brings all text telephones together Development for text & video standards for Internet (using H.323 video standard, eg Microsoft NetMeeting) SIP, ENUM and text access? The Future Textphones?

8. 8 Large installed base of TTYs TTYs dispersed, can’t be located to swap out Vital services on baudot infrastructure (health, welfare & emergency services, education, social, family…) Let’s not confuse the Form Factor (TTY) with the underlying Protocol (Baudot) Real Issue

9. 9 How can we migrate to digital technologies and phase out legacy technologies? without disruption or loss of services Real Question

10. 10 V.18 modems TextDirect (UK) Dials 18001 nnnnnnnn Dials nnnnnnnn 18001 routes to TXD Voice Network

11. 11 Voice Network IP Relay (USA) Internet Relay Service Access Directory Server V.18

12. 12 Proposal for Australia Switched networks IP networks Access Directory Server V.18 and other bridges Relay Services “Communications Hub” Video NGN Reqs?

13. 13 Do it once for all Australians on any network Modular - parts installed as needed The hub is “organic” - growing with technology Protects against future technology changes Allows people to take up the new, but stay connected to the old. Not “Out of the Box”

14. 14 On solution does not work for all - people need choices Use mainstream solution where possible More than ever we will need: Awareness Training Support New challenges to assure privacy Beyond Technology

15. 15 Stakeholder consultation and buy-in: People with Disabilities Broader community Telco Industry Legislators/Regulators Refine the model ACIF Forum to discuss options - early 2002 The Way Forward?

16. 16 Questions? Thank You www.aceinfo.net.au