Earlier this year, I previewed the C4230 first hand at Clarity’s world headquarters located in Chattanooga, TN.

The C4230 is a 5.8GHz cordless amplified phone, branded Clarity Professional.
It is perfect for those with a moderate-to-severe hearing loss by amplifying incoming sound up to 50dB/124dBSPL. The C4230 offers many features including a speaker phone and a digital answering machine. Available to order here.
Main Features:
- DCP™ with tone control
- Amplifies up to 50 dB
- 5.8 GHz w/ intercom
- Speaker phone in handset and base
- Digital answering machine
- Call Waiting CID
- Multi handset capability
- Lamp flasher and bed shaker ports
- Battery Backup
ERGONOMICS
Separation of Functionalities:
Separating the different functions of the phone will help instruct the user as to where to interact with the phone to access the different features.
Because the C4230 is a feature rich phone and our target market is not familiar with complicated technologies, our products must accommodate hard (software independent) and direct buttons without looking overwhelming.
Dividing the phone into thirds also offers a visually pleasant composition.
Visual Ringers:
Flash to notify the user that the phone is ringing.
The visual ringer is also used as part of the design to emphasize Clarity’s technology by drawing attention to the earpiece speaker.
The “Talk” and “Speakerphone” button will also light up, notifying the user which button to use to answer the call.
The visual ringers on the base are sunken to allow the user to easily access the handset.
Earpiece Shape:
The earpiece is shaped specifically to cup your ear, accomplishing a “custom fit” experience.
Not only comfortable, but functional. The “cup” forms a sealed chamber around the ear for better sound. This enables the phone to work extremely well with a hearing aid, reducing background noise and feedback.
The speaker cutout is in the form of the Clarity logo to signify that the technology and sound that enables you to finally hear a loved one on the phone comes from Clarity.
Installation
- Connect one end of the phone cord into the C4230 base and the other end into the telephone wall jack.
- Connect the AC adapter to the back of the base and a 120V wall outlet.

Handset Features:
TALK: To make a call Press the TALK button or predial number and press Talk.
Volume Control: The dial controls the volume levels of the handset, headset or neck loop and ringer volumes.
Boost: When pressed, an extra level of amplification is added over the entire range of volume.
Speaker: Press the Speaker button to activate the handset speaker phone. Press again to switch back to earpiece.
Soft Keys: Press the soft key to select a menu item displayed just above the key.
Arrow Buttons: Press up or down Arrows to navigate through the menus.
Help Key: Press Help Key Button to dial preprogrammed number.
Flash: While on a call, press CL/FL button to receive Another incoming call.
Clear: While in the menu, press CL/FL to go back to the main menu.
Redial / Pause: Press the RD/P button to redial the last number dial or insert a 2 second pause.
Tone: Press to select the audio tone for the handset. Boost must be ON to activate tone selection.
Intercom: Press to call Base or other handset on system.
Headset Port: A 2.5 mm headset can be used.
Ringer ON/OFF: Switch to turn Handset Ringer ON or OFF.
Neck loop Port: A 3.5mm neck loop can be used.
C4230 Base Features:

Speaker: Press to activate base speaker phone.
Flash: Press to receive an incoming call while on a call.
Redial: Press to redial the last number called.
Boost: Press to add an extra level of amplification over the entire range of volume control.
Volume: Press to control the outgoing speaker volume.
Ringer Style: Press to adjust the style of ring.
Mute button: Press to turn OFF speaker phone microphone.
Lamp Flasher port: Port for optional C2210 Lamp Flasher Notification Accessory.
Page: Press to page handset.
Ringer ON/OFF LED: Illuminates when Ringer is ON.
Power LED: Illuminates when power is ON.
In Use LED: Illuminates when phone is In Use.
Charge LED: Illuminates when phone is charging.
Answering Machine Display: Displays number of messages.
OGM/Play: Press to Play Outgoing Message.
OGM/REC: Press to Record Outgoing Message.
Registering C4230HS cordless handsets:
Place the C4230HS into the main unit until the screen displays: Handset Registered.
After registering the C4230HS, the handset will automatically be assigned a handset number.
September 28th, 2007 at 12:56 am
what are the dimensions of the unit and where is the antenna located on the unit.
Thanks