Transcript Interoperability presentation

Harmonised relay services
The work of STF 325
A project funded by ETSI and the European Union
W J Mellors C.Eng
The Team
Wally Mellors - STF leader
Gunnar Hellström
Juan Calero González
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This presentation
Will describe the problem
Set out the aims of the work
Describe the background
Look at the future
Make a call for help
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The Problem
 Many users are unable to use ordinary
telephones because of their inability to hear
and/or speak
 They can use some form of textphone or
total communication to “talk” or sign to one
another
 They cannot communicate with users of
ordinary telephones
 Some form of conversion service is therefore
required
 These services are known as Relay Services
 Harmonisation of these services will improve
European wide communication for all
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Present Aims
 In 2000, TC HF produced TR 101 806 giving
guidelines for relay services
 Report was based on PSTN for text and ISDN
for video
 The aim of the present work is to convert
this report to an ETSI standard
 A standard will not be accepted and used
unless it is realistic and achievable
 This will need co-operation from all current
relay service providers
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Present situation
 Much has changed since the year 2000
 New IP based systems are available
 Updating will be necessary
 But mandatory requirements must be
currently achievable
 IP based systems need proving
 All will be explored with current service
providers
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What is needed
 Conversation in real time by text and voice
 Duplex working (two way simultaneous)
 Simple call set up and clear down
 Progress information in text form
 Provision of relay services
 Access to emergency services
 Provision for signing and lipreading
 Just like an ordinary telephone call
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The DUST concept
D - Duplex – simultaneous send and receive
U – Universal - Worldwide on all networks
S – Speech in both directions
T – Text with conversational flow
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Services
 Basic call
 Supplementary services. Hold, transfer, etc
 Emergency service 112
 Relay service with text support
 Text <> voice
 Hard to understand speech <> clear
speech
 Sign language <> voice
 Interoperability between DUST Host
environments
 Interoperability with legacy systems
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Text goes mobile
 Push from USA to include real time text in mobile
services
 3GPP established Global Text Telephony standards
for text addition to all call environments with
international applicability
 In the circuit switched voice calls
 In the circuit switched multimedia calls
 In IP multimedia calls
 Mainly re-using work from ITU and IETF
 Now adopted as ETSI specifications
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The Future
 Text Conversation available to ALL
 Across all networks
 Using open and available standards
 All terminals interwork
 Full legacy support
 Texting anywhere anytime
 With voice available
 And with Video for signing and lipreading
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This is the future
Fixed textphone user
Fixed Network
Cellular Network
Fixed multimedia user
IP textphone or multimedia
user
IP
network
Mobile,
text capable
terminals
Cellular Network
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A call for help
Can you tell us of current relay service
providers?
Do you wish to be a stakeholder ?

Please contact me at:

[email protected]
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Thank you for listening