telecommunications device for the deaf

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tel·e·com·mu·ni·ca·tions de·vice for the deaf

(TDD, TT) (tel'ĕ-kŏ-myū'ni-kā'shŭns dĕ-vīs' def)
Telephone accessory that transmits and receives text over standard telephone lines. Also referred to as teletypewriter (TTY) and text telephone (TT).
See also: assistive listening device
References in periodicals archive ?
To order your free copy ring: 0345 622 633 (BT calls charged at local rate), or textphone 0345 622 644.
The consultation will close on November 1 and submissions can be made during the consultation via the Customer Helpline on 03457 22 33 44 or Textphone 03457 22 33 55.
Comments can be made during the consultation by Freepost YOUR COMMENTS to Post Office Ltd, via email to comments@postoffice.co.uk, via the Customer Helpline on 03457 22 33 44 or Textphone 03457 22 33 55.
People can make comment on the plans to Freepost YOUR COMMENTS to Post Office Ltd, via email to comments@postoffice.co.uk, the customer helpline on 08457 22 33 44 or textphone 08457 22 33 55.
Action on Hearing Loss can take referrals for communication support in GP appointments from medical staff or patients between 9am and 5pm on 0845 685 8001, 0845 685 8002 (textphone) 07537 410 086 (SMS), or by email at communication.services@hearingloss.org.uk Emergency number 0700 341 8352 - after 5pm or weekends; see also www.actiononhearingloss.org.uk
co.uk, or via the Customer Helpline 08457 22 33 44, or textphone 08457 22 33 55.
You can get more information about the scheme from the Driver and Vehicle Licensing Agency by ringing 0845 712 3456, or Textphone 0845 722 4433.
www.RNID.org.uk/jobs You can view and download information on all our vacancies and apply online by visiting www.RNID.org.uk or call 020 7296 8075 (24 hr), textphone 020 7296 8197 or email jobs@RNID.org.uk Please quote ref: HQ1668.
To contact the centre ring 0300 123 2040 or Textphone 0300 123 2050.
At the same time, we are also committed to supporting them, particularly those with mobility difficulties, and our Journey Care helpline is available to assist customers with their travel arrangements (Tel 0845 300 3005 or Textphone 0845 6050600).
Advice about alternative information formats such as Braille and large print, customer contact by telephone and textphone and the communication requirements of customers with a wide range of disabilities is also included.