What's new in AudioCodes Native Teams IP Phones devices?

Supported Models:

• C430HD - C430HD Admin Manual
• C435HD - C435HD Admin Manual
• C436HD - C436HD Admin Manual
• C455HD - C455HD Admin Manual
• C470HD - C470HD Admin Manual

Release Notes

Microsoft Applications:

• Microsoft Teams Name: 1449/1.0.94.2025325103 (aka 1.9.0)
• Microsoft Authenticator Name: 6.2505.3166
• Microsoft Admin Code: 794
• Microsoft Partner Name: 1.0.170
• Microsoft Intune Version: 25.02.1

Main Features In This Release:

Teams app new features

• Copilot in 1:1 and Group Calls 
• In-Call Transfer Suggestions and contact groups 
• Line Key Enhancements via Teams Admin Center (TAC) 
• Remote contact management for Common Area Phones via Teams Admin Center (TAC) 
• Custom Ringtone Behavior for Line Keys 
• Real-Time Text (RTT) Support 
• Answer on pick up setting 
• Location inference for PSTN users in India 

For more details, please refer here

Smart Noise Reduction for Open Spaces on C455HD & C470HD Teams Phones

This release introduces a new noise reduction mechanism designed to improve call clarity in open-space environments. This enhancement minimizes background noise, such as machinery, chatter, and ambient sounds, heard by remote participants when the local user is not speaking. 

By default, the system intelligently suppresses most background noise without compromising voice 
quality. For high-noise environments, an advanced configuration option is available:

• Parameter: dsp/audio/reduce_open_space_noise
• Default Value: 2
• Optional Value: 3 (for more aggressive noise reduction, with slight impact on voice quality)

* This feature is available on the C455HD and C470HD Teams phones. 

Provisioning Source Auto Discovery Enhancement

The Provisioning Source Auto Discovery mechanism has been enhanced to allow admins to specify, for each individual device, the DHCP option to be used as the default provisioning source (DHCP 160, DHCP 66/67, or Redirect).  If the default DHCP option is blank, the system automatically tries the next option until it finds an option with a value or no option is left.

Provisioning Reset - Changed Command Name 

The Reset Provisioning command has been renamed to Rediscover Provisioning Server, to better reflect its function. This command resets the device’s provisioning settings, allowing it to connect to another provisioning server (if one is configured). 

Emergency Failover Calls Maintaining Teams Username When Switching to SIP Mode

The AudioCodes Calling App for Emergency Failover (previously released) has been enhanced to support registering with the calling phone's Teams username, even after the phone has switched to SIP mode. This means that when a user calls a preconfigured emergency number, such as the security officer, the caller ID will be the username of the phone once the call is made in SIP mode.

Addition of DigiCert TLS G5 Root Certificates

AudioCodes has added the following DigiCert G5 Root CAs to the well-known trusted IPP root folder: 

• DigiCert TLS ECC P384 Root G5
• DigiCert TLS RSA4096 Root G5 

Supported Models:

• C430HD - C430HD Admin Manual
• C435HD - C435HD Admin Manual
• C436HD - C436HD Admin Manual
• C455HD - C455HD Admin Manual
• C470HD - C470HD Admin Manual

Release Notes

Microsoft Applications:

• Microsoft Teams Name:  
  • Touch screen phones (C455HD, C470HD) - 1449/1.0.94.2025168802  (aka 1.7.1)
  • LCP (C430HD, C435HD and C436HD): 1449/1.0.94.2025087003 (aka 1.6.1)
• Microsoft Authenticator Name: 6.2505.3166
• Microsoft Admin Code: 784
• Microsoft Partner Name: 1.0.165
• Microsoft Intune Version: 25.02.1

Main Features In This Release:

AudioCodes Smart Button Programmable for Redial Functionality

The phone’s AudioCodes Smart Button can now be configured to function as a redial button. This feature is applicable to C455HD, C430HD, C435HD, and C436HD IP Phones. Configuration is done using the following parameter: personal_settings/audiocodes_key_to_redial/enabled=1.

Bypassing Initial Language and Date/Time Setup on First Boot

If the device receives language and/or date/time configuration from Device Manager or during provisioning, it will skip those settings during the first boot.

Copilot-Generated Summaries for Call Transfers 

Applicable for phones using Teams app version 1449/1.0.94.2025168802 and later

The feature provides agents with a copilot-generated summary of the call before transferring it. The summary includes key details such as caller information, call reason, prior actions, and next steps. It supports both consult and blind transfers, ensuring effective communication and improved efficiency. 

Prerequisites:

• The feature requires an additional license when available in GA: M365 Copilot. Visit here for more details: License options for Microsoft 365 Copilot.
• Transcription needs to be enabled in calling policies for both the transferor and the transferee.

Line Keys for Shared Line, Collaborative Call Delegation, Call Queues and Call Transfers

Applicable for phones using Teams app version 1449/1.0.94.2025168802 and later

The feature allows the following:

• Line keys are now available for shared lines on Teams certified phone devices. Users can assign shared lines to a line key and view the boss/delegates and members of the group along with their presence.
• Delegates can pick up calls on behalf of the boss or group members by pressing the line key and join active calls. This is also supported for collaborative call delegation groups.
• Users can also now assign call queues to a line key and monitor their status if the call queue has an active ongoing call or is available. Users can pick up calls on the call queue by pressing the line key.

Users can assign the transfer action to the line key, enabling them to transfer active calls to specific contacts by simply pressing that line key. This is now also supported on sidecars. 

External Contacts Management 

Applicable for phones using Teams app version 1449/1.0.94.2025168802 and later

This feature allows users to add and edit external contacts using the lightweight People app on Teams phone devices. Users can manage and interact with contacts outside of their organization.

Supported Models:

• C430HD - C430HD Admin Manual
• C435HD - C435HD Admin Manual
• C436HD - C436HD Admin Manual
• C455HD - C455HD Admin Manual
• C470HD - C470HD Admin Manual

Release Notes

Microsoft Applications:

• Microsoft Teams: 2025084203 (also known as 1.6.0) -
  For Microsoft’s ‘Release Notes for Microsoft Teams Phones’, click here.
• Authenticator: 6.2410.7268
• Microsoft Intune: 24.09.1
• Admin Agent 753

Main Features In This Release:

C436HD New Teams Phone Model 

The AudioCodes C436HD IP phone is a Microsoft Teams-native entry level/common area phone designed to support the next generation of enterprise collaboration technologies, and is an excellent choice for retail environments looking for reliable, user-friendly solutions. Equipped with a 4.3” color LCD screen, an integrated sidecar and a dedicated Teams button, the C436HD supports Microsoft Teams out-of-the-box to deliver feature-rich unified communications.

AudioCodes Calling Application for Emergency Failover 

This new SIP fallback feature ensures that users can make calls even if Microsoft Teams is unavailable. The device maintains internet connectivity via the SBC using a SIP-based application, allowing users to call pre-configured numbers, such as emergency contacts, when the feature is activated.

Key Highlights:

• SIP Fallback Capability: Enables users to make calls through a SIP-based application when Teams is unavailable, ensuring continuous communication.
• Pre-configured Numbers: Users can only call predefined numbers, such as emergency contacts, during failover.
• System Administrator Configuration: Administrators can enable this feature, configure SIP parameters, and set predefined numbers during the phone configuration phase. For detailed configuration instructions, refer to the Administrator’s and User’s  manual.

Support for Line Key Assignment 

The Teams application now supports the assignment of contacts to line keys, enabling speed dialing and displaying Teams presence status. This feature enhances user convenience by utilizing the main LCD side keys on the C430HD, C435HD, and C436HD models, which were previously unused. Users can now assign up to six line keys for quick access to their contacts:

Force Users to Change Lock PIN 

The Teams application now supports this ability. Administrators can now configure an option that forces users to change their device lock PIN. This is achieved by setting up the new configuration file parameter forceChangePIN, which mandates users to update their device lock PIN.

Return to Previous Version 

In response to the previous release’s downgrade block, AudioCodes has introduced a new, controlled option for reverting to the previous firmware version. This feature allows Administrators users to return to the firmware version stored on the device after completing their evaluation of a new build

Supported Models:

• C430HD
• C435HD
• C455HD
• C470HD

Microsoft Applications:

• Microsoft Teams: 2024122303 (also known as 1.5.0) -
  For Microsoft’s ‘Release Notes for Microsoft Teams Phones’, click here.
• Authenticator: 6.2410.7268
• Microsoft Intune: 24.09.1
• Admin Agent 733

Main Features In This Release:

Moving Teams Android Devices to AOSP Device Management

• Starting from this release, Microsoft Teams Android devices now use Intune Android Open Source Project (AOSP) device management.
• For more info about the AOSP migration, please refer to here.

Supported Models:

• C430HD
• C435HD
• C455HD
• C470HD

Microsoft Applications:

• MicrosoftTeams-2024092304 (a.k.a. 1.3.1)
• Authenticator: 6.2410.7268
• Microsoft Intune: 24.09.1
• Admin Agent 733

Main Features In This Release:

Moving Teams Android Devices to AOSP Device Management

• Starting from this release, Microsoft Teams Android devices now use Intune Android Open Source Project (AOSP) device management. 
• For more info about the AOSP migration, please refer to Moving Teams Android Devices to AOSP Device Management | Microsoft Community Hub.

Supported Models:

• C430HD

Microsoft Applications:

• MicrosoftTeams-2024080808 (a.k.a. 1.2.1)
• Company Portal 5.0.6152.0
• Admin Agent 733

Main Features In This Release:

First C430HD release

Supported Models:

• C435HD
• C455HD
• C470HD

Microsoft Applications:

• MicrosoftTeams-2024080808 (a.k.a. 1.2.1)
• Company Portal 5.0.6152.0
• Admin Agent 703

Main Features In This Release:

Version 2.3.453 delivers Android OS12

• Phones can be updated to Android OS12 via the intermediate firmware version of 1.19.642 (or any later 1.19 build). Note that the phone will not be restored to its default settings as a result of this upgrade.
• Applies to C430HD, C435HD, C455HD and C470HD.
  Inapplicable to C448HD and C450HD

Block firmware downgrade

• Starting from this version release, firmware downgrade is blocked. This will prevent a possible race condition between Microsoft TAC and AudioCodes’ OVOC | Device Manager

Supported Models:

• C430HD
• C435HD
• C455HD
• C470HD

Microsoft Applications:

• MicrosoftTeams-2024061301 (a.k.a. 1.1.3)
• Company Portal 5.0.6152.0
• Admin Agent 703

Main Features In This Release:

Enhanced Security in Android OS12

The new release, based on OS12 offers a significantly enhanced security level compared to the previous Android OS9. This upgrade ensures advanced privacy controls, improved data protection, a better app security and also more secure connectivity. 

Improved incoming audio performance

This version optimizes audio processing for incoming calls resulting in a significant improvement in call quality. Users now experience a much faster connection so the remote party (the caller) hears the recipient’s voice (the local phone) with noticeably reduced delay. 

Capability for admin-defined password complexity has been added

The feature was designed mainly for non-touch screen phones but can also be applied to touch-screen phones. The feature gives admins the ability to finely adjust password complexity, ensuring that customers using low-cost phones (LCPs) can easily input passwords using the phone's hard keys. 

AudioCodes Android-based phones now support multicast paging (including barge-in)

in compliance with customer requests, especially customers in the educational market invested in emergency notification systems which use multicast. The new feature allows a call to be paged to a group of phones to notify a team about (for example) the time and place at which a meeting will commence. The paging call is multicast via a designated group IP address, in real time, on all phones in the group.Barge-in enables paging to interrupt (barge in on) phone conversations that are in progress. 

Improved out-of-the-box troubleshooting.

Admins can now monitor the status of the various software modules of the device. If initial provisioning is unsuccessful or if admin encounters an issue related to the network / connection to Device Manager, the feature gives admin an indication as to why. 

AudioCodes Android devices can configure VLAN via a DHCP Option when CDP/LLDP isn’t allowed in the organization

The following DHCP Options offer a VLAN ID: Option 43, 132, 128, 129, 144, 157, 191. If the device gets more than one of these, it will apply only one according to the aforementioned order of priority.

Power-Saving Mode for the MWI LED and the LCD

This feature automatically activates power-saving mode during non-working hours. By default, during off hours the phone's uppermost-right LED is switched off and the LCD is dimmed. This conserves energy and minimizes light disturbance, providing a seamless and efficient user experience. 

[Applies to C455HD and C470HD] USB device mode is available as a Beta feature.

The phone can be connected to a PC via a USB-A Male – USB-A Male cable, allowing it to be used as the PC’s audio device such as an external speaker. 

Improvements were made to certificate enrollment using Simple Certificate Enrollment Protocol (SCEP).

QoS settings for the PC port are now supported (VLAN for PC port).

A timeout has been added to the Admin login to automatically logout the admin user.

[C470HD] A ‘Switch to Zoom’ operation can no longer be performed from the phone UI

Please contact AudioCodes for more information about performing the operation.