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 ?
And meter readings in braille, large print, audio tape, textphone or typetalk if you're visually impaired.
uk, via the Customer Helpline on 08457 22 33 44, Textphone 08457 223355 or using the online questionnaire at postoceviews.
uk, via the Customer Helpline on 08457 22 33 44 or Textphone 08457 22 33 55.
uK, by ringing 08457 223344 or by textphone on 08457 223355.
Reporting ASB can be done in a number of ways, either by ringing 101, texting to 07786 200 814, by textphone (for those with hearing problems) on 18001 101 or by visiting www.
30pm Monday-Friday, textphone 0845 601 5613) or visit https://www.
If I want to talk through these changes, however, our local delivery manager has appended his contact details: website, telephone and textphone, and a PO Box in Plymouth.
Alternatively, a textphone service for small business owners is available for people with speech or hearing impairments on 0845 601 2002.
Their landline textphone wasn't working, so he could not use it to call for help.
To apply for the Access All Areas Awards OR a DDA information pack, contact: telephone +44(0)845-124-9841, textphone 1 800 1 0845 124 9841, email: DDAinfopack@meads-ltd.
Few organisations offer textphone facilities and those that do provide them often fail to advertise the number, leaving the responsibility with a hearing person to obtain it on behalf of the deaf caller.
Call the free informa-tion line on 0808 808 0123 or textphone 0808 808 9000.