AudioCodes C450HD - 1 Introduction; Overview; Specifications; Table 1-1: C450 HD and C448 HD IP Phones for Microsoft Teams Software Specifications

Release Notes 1. Introduction
Version 1.2.196 7 400HD Series IP Phones for Skype for Business
1 Introduction
This document describes the new features and known constraints of AudioCodes' C448HD and C450HD
IP Phones for Microsoft Teams. The phone’s firmware version is 1.2.196 and the Microsoft Teams
application version is 1.0.94.2020020601.
1.1 Overview
The AudioCodes C450HD and C448HD IP phones are native Microsoft Teams high-end executive
business phones with a large color touch screen and full UC integration for the Native Microsoft Teams
Online market.
The Microsoft Teams C450HD and C448HD are equipped with a 5-inch color capacitive touch screen,
1280 x 720 resolution and optional integrated Wi-Fi and Bluetooth support (C450HD only) (contact your
local AudioCodes representative for more information about regional availability of Wi-Fi / Bluetooth).
The phones can be managed by the Microsoft Teams & Skype for Business Admin Center. For more
information, see https://docs.microsoft.com/en-us/MicrosoftTeams/phones-for-teams.
The C450HD phone also features the option to be used as a Microsoft Skype for Business IP phone,
offered as part of AudioCodes’ Managed IP Phones solution which defines the IP phone as an IT-
managed entity and delivers unique and complete lifecycle management of end-user desktop devices. A
single-click switchover between Microsoft Teams with native client experience and Skype for Business is
supported. The C448HD phone currently doesn’t support this option as it’s for Native Teams only.
1.2 Specifications
The table below summarizes the software specifications of the C450HD and C448HD IP Phones for
Microsoft Teams.
Table 1-1: C450HD and C448HD IP Phones for Microsoft Teams Software Specifications
Feature Details
Media Processing
 Voice Coders: G.711, G.729, G.722, SILK Opus
 Acoustic Echo Cancelation: G.168-2004 compliant, 64-msec tail length
 Adaptive Jitter Buffer
 Voice Activity Detection
 Comfort Noise Generation
 Packet Lost Concealment
 RTP/RTCP Packetization (RFC 3550, RFC 3551), SRTP (RFC 3711)
Microsoft Teams phones
feature set

Authentication (Sign in with user credentials; Sign in using PC/Smartphone;
Modern Authentication; Phone lock/unlock)
 Calling (Incoming/Outgoing P2P calls; In-call controls via UI (Mute,
hold/resume, transfer, end call); PSTN calls; Visual Voicemail; 911 support
 Calendar and Presence (Calendar Access and Meeting Details; Presence
Integration; Exchange Calendar Integration; Contact Picture Integration;
Corporate Directory Access)
 Meetings (One-click Join for Meetings; Join Skype for Business meetings;
Meeting Call controls [Mute/unmute, hold/resume, hang up, add/remove
participant]; Meeting Details. See also https://docs.microsoft.com/en-
us/MicrosoftTeams/phones-for-teams.