Notice

Trademarks

©2026 AudioCodes Ltd. All rights reserved.AudioCodes, AC, HD VoIP, HD VoIP Sounds Better, IPmedia, Mediant, MediaPack, What’s Inside Matters, OSN, SmartTAP, User Management Pack, VMAS, VoIPerfect, VoIPerfectHD, Your Gateway To VoIP, 3GX, AudioCodes One Voice, AudioCodes Meeting Insights, and AudioCodes Room Experience are trademarks or registered trademarks of AudioCodes Limited. All other products or trademarks are property of their respective owners. Product specifications are subject to change without notice.

WEEE EU Directive

Pursuant to the WEEE EU Directive, electronic and electrical waste must not be disposed of with unsorted waste. Please contact your local recycling authority for disposal of this product.

Contact Us

International Headquarters

6 Ofra Haza Street
Naimi Park
Or Yehuda, 6032303, Israel
Tel: +972-3-976-4000
Fax: +972-3-976-4040

AudioCodes Inc.

80 Kingsbridge Rd
Piscataway, NJ 08854, USA
Tel: +1-732-469-0880
Fax: +1-732-469-2298

For other AudioCodes offices, go to https://www.audiocodes.com/corporate/offices-worldwide.

Contact us:https://www.audiocodes.com/corporate/offices-worldwide

Website:https://www.audiocodes.com/

Related Documentation

Document Name

Release Notes

C456HD IP Phone for Microsoft Teams Release Notes

Quick Guides

C456HD IP Phone for Microsoft Teams Quick Guide

C456HD IP Phone Expansion Module Installation Guide

Video Tutorials

IP Phones How To Video Tutorials

Miscellaneous

Security Guidelines for AudioCodes' Android-based Devices

Android Device Utility User's Manual

Device Manager Administrator's Manual

Device Manager Deployment Guide

Microsoft Configuration for AudioCodes Teams Devices

https://docs.microsoft.com/en-us/MicrosoftTeams/phones-for-teams

Document Revision Record

LTRT

Description

13472

Initial document release (Ver 3.1)

13482

Updated to Ver. 3.1.M1

Notes and Warnings

FCC Caution

Part 15.21

Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

Part 15.19

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

Part 15.105

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

■ Reorient or relocate the receiving antenna.
■ Increase the separation between the equipment and receiver.
■ Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
■ Consult the dealer or an experienced radio/TV technician for help.

FCC Statement

1. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
a. This device may not cause harmful interference.
b. This device must accept any interference received, including interference that may cause undesired operation.
2. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

Note: This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.

This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

■ Reorient or relocate the receiving antenna.
■ Increase the separation between the equipment and receiver.
■ Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
■ Consult the dealer or an experienced radio/TV technician for help.

The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body.

FCC RF Radiation Exposure Statement

1. This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
2. This equipment complies with RF radiation exposure limits set forth for an uncontrolled environment.
3. This equipment should be installed and operated with minimum distance 20cm between the radiator& your body.

User manuals for license-exempt radio apparatus shall contain the following or equivalent notice in a conspicuous location in the user manual or alternatively on the device or both.

 

[EN] This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions:

(1) this device may not cause interference, and

(2) this device must accept any interference, including interference that may cause undesired operation of the device.

[FR] Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes :

(1) l'appareil nedoit pas produire de brouillage, et

(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

 

[EN] Radio apparatus containing digital circuitry which can function separately from the operation of a transmitter or an associated transmitter, shall comply with ICES-003. In such cases, the labelling requirements of the applicable RSS apply, rather than the labelling requirements in ICES-003. This Class B digital apparatus complies with Canadian ICES-003.

[FR] Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

IC SAR Warning

[EN] This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body.

[FR] Lors de l’ installation et de l’ exploitation de ce dispositif, la distance entre le radiateur et le corps est d ’au moins 20 cm.

ISED Warning

[EN] This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

(1) This device may not cause interference.

(2) This device must accept any interference, including interference that may cause undesired operation of the device.

The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body.

Operations in the 5.15-5.35GHz band are restricted to indoors usage only.

[FR] L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes :

(1) L’appareil ne doit pas produire de brouillage;

(2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

Cet équipement doit être installé et utilisé avec une distance minimale de 20 cm entre le radiateur et votre corps.

Le fonctionnement dans la bande 5,15 - 5,35 GHz est limité à un usage intérieur.

Radiation Exposure Statement for Phones with DBW Flavors

This product (all C456HD DBW suffix flavors) complies with the radio interference requirements of the European community. Hereby, Audiocodes Ltd. declares that the product is in compliance with the essential requirements and other relevant provisions of RE Directive 2014/53/EU. You can find the Declaration of Conformity on AudioCodes | The Future Runs on VoiceAI.

■ RF frequency
✔ Bluetooth BR + EDR: 2402 MHz to 2480 MHz
✔ BLE: 2402 MHz to 2480 MHz
✔ 2.4G WIFI: 2412 MHz to 2472 MHz
✔ 5G WIFI: 5180 MHz to 5240 MHz; 5260 MHz to 5320 MHz; 5500 MHz to 5700 MHz; 5745 MHz to 5825 MHz
■ RF power
✔ Bluetooth BR + EDR: 6.71 dBm
✔ BLE: 6.50 dBm
✔ 2.4G WIFI: 18.21 dBm
✔ 5G WIFI: 18.00 dBm
■ Manufacturer Name: Audiocodes Ltd.
■ Address: 6 Ofra Haza St., Naimi Park, Or Yehuda, 6032303, Israel
■ Product Name: IP-Phone
■ Trademark:
■ Model: C456HD

The device has been evaluated to meet general RF exposure requirement. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body.

Radiation Exposure Statement

[EN] The device is compliance with RF exposure guidelines, users can obtain Canadian information on RF exposure and compliance. The minimum distance from body to use the device is 20cm.

[FR] Le présent appareil est conforme Après examen de ce matériel aux conformité ou aux limites d’intensité de champ RF, les utilisateurs peuvent sur l’exposition aux radiofréquences et la conformité and compliance d’acquérir les informations correspondantes. La distance minimale du corps à utiliser le dispositif est de 20cm.