AudioCodes C455HD & C435HD Phone Guides

Tags phone Teams


This guide compares the basic functions of the C455HD (touch screen) and C435HD (non-touch screen) phones.

Initial Phone Setup & Sign-In

The first time you connect your phone, you will need to pair it with your Microsoft Teams account.

  1. Your phone's screen will show a URL (https://microsoft.com/devicelogin) and a unique code.
  2. On a computer or mobile device, open a web browser and go to that URL.
  3. Enter the code from your phone's screen and click Next.
  4. Sign in with your HCC NetID and password.
  5. Once authenticated, your phone will automatically sign in to your Teams account.

C455HD (Touch Screen)

Diagram of the Audiocodes C455HD phone

C435HD (Non-Touch Screen)

Diagram of the Audiocodes C435HD phone

Making & Answering Calls

  • Make Call: Tap Calls icon and use keypad, or go to People to select a contact.
  • Answer Call: Pick up handset, use Speaker/Headset key, or tap Accept on screen.
  • Make Call: Enter number and press Dial softkey, or press CONTACTS key to find a contact.
  • Answer Call: Lift handset, use Speaker/Headset key, or press Accept softkey.

Call Management

  • Hold: Tap the three dots (...) and select Put call on hold.
  • Resume: Tap Resume on the screen.
  • Voicemail: Tap the Voicemail icon, select a message, and tap the play button.
  • Hold: Press the dedicated HOLD key.
  • Resume: Press the HOLD key again.
  • Voicemail: Press the Voicemail key, select a message, and press the Play softkey.

Transferring a Call

  • Blind (Direct): Tap (...) > Transfer > Transfer Now > Select contact.
  • Consult (Announced): Tap (...) > Transfer > Consult first > Call contact > Tap the Transfer icon.
  • Blind (Direct): Press Transfer softkey > Select Transfer now & press OK > Select contact & press OK.
  • Consult (Announced): Press Transfer softkey > Select Consult first & press OK > Call contact > Open (...) menu > Select Transfer & press OK twice.

Full User Manuals

For more detailed information, please refer to the original manufacturer documents linked below:

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