sip support for deaf and speech impaired customers gearhart, van wijk, and sinnreich
TRANSCRIPT
SIP Support for Deaf and Speech Impaired Customers
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Gearhart, van Wijk, and Sinnreich
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Why?
• Business and personal communications today is
telephone oriented.
• Suppose no telephone communications for 24
hours: only options are fax and email.
• Deaf people, the same as hearing people, do need
to communicate every day: business, personal, family,
etc.
• Deaf people are entitled to the same access to easy
communications that hearing people take for granted.
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Why SIP?SIP provides ideal multimedia support: text, voice, video, and combinations of these. Examples:
• Deaf caller using Sign Language (video) to Hearing callee receiving audio interpretation [uses relay service].
• Hearing caller using video and voice to Deaf callee receiving video with text interpretation (captioning) [uses relay service].
• Deaf caller using Sign Language (video) to a Deaf callee receiving Sign Language (video) [no relay service necessary].
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Selected Requirements
• Deaf user preferences: send/receive Sign Language;
text with video; text with voice over; other combinations
• Automatic connection to relay service
• Support for relay center list and automatic
forwarding in case of busy/no answer at relay center
• Relay centers can advertise the services available to
Deaf customers: video interpreting, video and text
message service (“answering machine”), etc.
Example: Deaf Caller to Hearing CalleeRelay
ServiceSIP Proxy
Hearing Callee
Deaf Caller
REGISTER
200 OK
INVITE
183 Using relay, please wait
INVITE
200 OK
INVITE
200 OK
ACK
ACK
200 OK
ACK
RTP (text)
RTP (audio)RTP (text)
User ID; passwordContact: [email protected]
RTP (audio)
Example: Hearing Caller to Deaf Callee
Deaf CalleeSIP ProxyRelay
ServiceHearing Caller
REGISTER
200 OK
INVITE
183 Using relay, please wait
INVITE
200 OK
INVITE
200 OK
ACK
ACK
200 OK
ACK
RTP (audio)
RTP (text)
RTP (audio) RTP (text)
User ID; passwordContact: [email protected]
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The Market
• 10% of the world’s population are Deaf or Hard-of-
Hearing individuals.• This untapped market is ready to participate in the
21st Century of communications.• SIP and multi media telephony provide ideal vehicles
for services directed to this market.• Most products that will be created for this population
also provide valuable services for the hearing market.• 21st Century technology should mean fully accessible
communication for everyone.