Verified Nov 2026
Electronics & Software
·
Madison, Wisconsin
·
Since 2001
CapTel Phone is a privately held company headquartered in Madison, Wisconsin, United States, founded in 2001. It has an estimated 200-500 employees and an estimated $10-50M revenue band. The company makes captioned telephone devices and a mobile captioning app for people with hearing loss, providing real-time text captions of phone conversations through a free captioning service. Its serves the accessibility and assistive telecommunications market, with a product line that includes the CapTel 2400i and CapTel 840i models.
CapTel Phone at a glance
Revenue
$10-50M
Est. band
Employees
200-500
Founded
2001
Headquarters
Madison, Wisconsin
Industries
Automotive
Electric Vehicles
Electronics
Medical
Overview
CapTel Phone is a privately held company headquartered in Madison, Wisconsin, United States, founded in 2001. It has an estimated 200-500 employees and an estimated $10-50M revenue band. The company makes captioned telephone devices and a mobile captioning app for people with hearing loss, providing real-time text captions of phone conversations through a free captioning service. Its serves the accessibility and assistive telecommunications market, with a product line that includes the CapTel 2400i and CapTel 840i models.
At a glance
Attribute | Detail |
|---|---|
Founded | 2001 |
Headquarters | Madison, Wisconsin |
Employees | 200-500 |
Revenue | $10-50M (estimated) |
Primary capability | Electronics & Software |
What CapTel Phone makes
Its product line includes the CapTel 2400i and the CapTel 840i, the latter with a built-in answering machine and WiFi compatibility, plus the Hamilton Mobile CapTel app for iOS and Android.
Products and capabilities described on the company's own site include Glass (source: captel.com).
Latest developments
2026-03-06 — Clear Conversations with a Telephone for the Hard of Hearing - CapTel Captioned Telephone (captel.com)
2026-01-22 — Ask the Expert: John Kinstler on CapTel and Communication Technology (captel.com)
2025-11-08 — A Complete Guide to Telephone Hearing Assistive Devices (captel.com)
2025-11-07 — A Complete Guide to Telephone Ringer Amplifiers (captel.com)
2025-11-01 — A Complete Guide to Telephones for Hard of Hearing (captel.com)
2025-08-16 — Telephone Devices for the Hard of Hearing (captel.com)
Company details
The captioned telephone technology was originally developed by Ultratec and is now part of Hamilton CapTel, and the company's service has reportedly facilitated over 400 million captioned calls. CapTel Phone was founded in 2001, has an estimated 200-500 employees, and is headquartered in Madison, Wisconsin.
Frequently asked questions
What does CapTel Phone make?
CapTel Phone is a privately held company headquartered in Madison, Wisconsin, United States, founded in 2001. It has an estimated 200-500 employees and an estimated $10-50M revenue band. The company makes captioned telephone devices and a mobile captioning app for people with hearing loss, providing real-time text captions of phone conversations through a free captioning service. Its serves the accessibility and assistive telecommunications market, with a product line that includes the CapTel 2400i and CapTel 840i models.
Where is CapTel Phone headquartered?
CapTel Phone is headquartered in Madison, Wisconsin (450 Science Dr, Madison, Wisconsin, 53711).
When was CapTel Phone founded?
CapTel Phone was founded in 2001.
How big is CapTel Phone?
CapTel Phone has an estimated 200-500 employees, with revenue in the $10-50M range (estimated).
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Last verified Nov 2026. Is this your company? Request a correction.
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