Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
September 08, 2026 7 min read
Setup guide for the Hamilton CapTel 840i captioned telephone β telephone line, power, wired/WiFi Internet connection, date/time setup, greeting message, and troubleshooting.
Setup guide for the Hamilton CapTel 840i captioned telephone β covers telephone line, power, and Internet (wired or WiFi) connection, date/time setup, greeting message recording, and troubleshooting.
The CapTel 840i connects to a telephone line like any other phone β you talk and listen to your callers, and place/answer calls the same way. What's different: to show captions, the CapTel 840i also connects to the Internet (the same way a computer does). That Internet connection links to a free Captioning Service, where a specially-trained operator transcribes everything the caller says into captions, which are sent back over the Internet to display on the phone. Because captions rely on the Internet connection, setup takes a few extra steps beyond a standard phone.
Connects via a standard RJ11 connection. Compatible with: standard analog service, DSL (filter recommended), digital cable phone service, VOIP, or FIOS phone service. Does NOT work with digital PBX phone systems (common in offices, residential facilities, hotels) unless an analog port is available.
Connects via an Ethernet cable or WiFi network. A high-speed connection is required β dial-up will not work. Your modem/router should support DHCP; check whether a firewall is active, as it may interfere with connecting the CapTel 840i.
Plugs into a standard wall outlet using the included power adapter only.
Choose a location where a telephone jack, electrical outlet, and Internet jack (for wired setups) are all located nearby, on a stable/secure surface, protected from excessive heat or humidity. For WiFi setups, the phone doesn't need to be in the same room as the router, but signal strength improves the closer it is positioned to the router.
Plug one end of the telephone cord into the jack labeled "Line 1" on the back (top) edge of the CapTel 840i. Plug the other end into a telephone wall outlet.
Plug the power adapter cord into the socket labeled "Power" on the back (top) edge of the phone, then plug the adapter into a wall outlet or power strip. The display screen will light up to confirm power is connected.
Tip: Plug the power adapter into a surge protector to guard against voltage spikes or lightning damage. Do not use an outlet controlled by a dimmer or wall switch.
Warning: Use only the power adapter that came with your CapTel 840i (6 VDC @ 1670 mAmps) β a different adapter may damage the phone.
Once power is connected, the phone automatically checks that everything is connected and working properly, showing progress on the display.
There are two connection options: wired (Ethernet) or wireless (WiFi).
When connected properly, the LNK/ACT indicator light (next to the Ethernet jack) will glow.
You'll need the name of your wireless network (SSID) and any password required to access it.
If your network isn't listed: highlight "Enter Network Manually" and press YES. Enter the SSID using the dialing pad, select the network security type (No Security / WPA Security / WEP Security), then enter the password if required and press YES to accept. CapTel saves the settings and connects.
Once connected to the Internet, the CapTel automatically checks for and installs the latest software version if needed β the phone may reboot as part of this process. Wait for the update to finish before continuing.
Your CapTel is now ready to make/receive calls. Make a test call to confirm it's working properly.
By default, the Answering Machine uses a pre-recorded greeting ("Hello. No one is available to take your call. Please leave a message after the tone."). To record your own:
CapTel Installation Help Line: 888-269-7477 (V/TTY). Spanish CapTel Customer Service: 866-670-9134. Email: CapTel@CapTel.com. Fax: 608-204-6167. Online help: www.captel.com/customer-service.php
Ultratec, Inc. β 450 Science Drive, Madison, WI 53711
Sign up to get the latest on sales, new releases and more β¦