AudioCodes 400HD Series Bedienungsanleitung

User's and Administrator's Manual

AudioCodes 400HD IP Phone Series

C448HD | C450HD IP

Phones

Microsoft Teams Application

Version 1.17



Notice C448HD C450HD | Users & Administrator's Manual

Notice

Information contained in this document is believed to be accurate and reliable at the time

of printing. However, due to ongoing product improvements and revisions, AudioCodes

cannot guarantee accuracy of printed material after the Date Published nor can it accept

responsibility for errors or omissions. Updates to this document can be downloaded

from https://www.audiocodes.com/library/technical-documents.

This document is subject to change without notice.

Date Published: November-22-2022

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.

Customer Support

Customer  technical  support  and  services  are  provided  by  AudioCodes  or  by  an  authorized 

AudioCodes  Service  Partner.  For  more  information  on  how  to  buy  technical  support  for 

AudioCodes  products  and  for  contact  information,  please  visit  our  website  at 

https://www.audiocodes.com/services-support/maintenance-and-support.

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Related Documentation

Document Name

C450HDandC448HDIPPhoneforMicrosoftTeamsQuickGuide

C450HDandC448HDIPPhoneforMicrosoftTeamsReleaseNotes

DeviceManagerAdministrator'sManual

- ii -

Notice C448HD C450HD | Users & Administrator's Manual

Document Name

DeviceManagerDeploymentGuide

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



- iii -

Content C448HD C450HD | Users & Administrator's Manual

Table of Contents

1 Overview 1

Specifications 1

Allowing URLs, Ports (Security) 4

Security Guidelines for Android-based Native Teams Devices 5

Android-Level Security Hardening 6

Google Play Services 6

Running Android in Kiosk Mode 6

Screen Lock 7

AudioCodes Private Key 7

Android Debug Bridge (ADB) 7

App Signing 7

Web Browser 7

Remote Configuration Management 8

AudioCodes Device Manager Validation 8

Sandboxing 8

Device File System 8

Keystore 8

Device Certificate 8

Data Protection 9

Debugging Interface 9

SSH Access: Reduced File System Privileges 9

Android Security Updates 9

Upgrading from Android 7 to Android 9 security patch level dated April 5, 2021 10

AudioCodes Root CA Certificate 10

2 Setting up the Phone 13

Unpacking 13

Device Description 14

Front View 14

Rear View 16

Cabling 17

Mounting the Phone 17

Desktop Mounting 17

Wall Mounting 17

Installing the Expansion Module (Sidecar) 18

Before Using AudioCodes Devices 19

3 Starting up 20

Configuring Device Settings 20

Configuring Wi-Fi 34

Restoring the Phone to Default Settings 36

Performing a Hard Restore 36

Performing a Soft Restore 36

- iv -

Content C448HD C450HD | Users & Administrator's Manual

Recovery Mode 37

Locking and Unlocking the Phone 37

Automatic Lock 37

Unlock 37

4 Teams Application 39

Signing In 39

Multi-Cloud Sign-in 43

Remote Provisioning and Sign-in from Teams Admin Center 43

Getting Acquainted with the Phone Screen 48

Enabling Google Talkback 50

Opting in or out of Call Queues 51

Setting Status 51

Hot Desking 52

Changing Presence Status 53

Enabling Voicemail Support on CAP Users 54

Configuring Teams Application Settings 55

Setting up a Meeting 58

Using the People Screen 59

Accessing Voicemail 60

Using Audio Devices 60

Transferring Calls and Meetings across Devices 61

Signing Out 61

5 Performing Teams Call Operations 63

Making a Call 63

Redialing 64

Dialing a Missed Call 64

Select to Dial 64

Making an Emergency Call 64

Answering Calls 66

Ending an Established Call 66

Managing Calls 66

Parking a Call 66

Managing Teams Meetings 67

Using Live Captions 69

Raising a Hand During a Meeting 70

Hiding Names and Meeting Titles for Individual Devices 70

Transferring a Call to Frequent Contacts 70

Transferring a Call to Work Voicemail 70

Viewing and Playing Voicemail Messages 71

Rejecting an Incoming Call, Sending it Directly to Voicemail 71

Adjusting Volume 71

Adjusting Ring Volume 72

Adjusting Tones Volume 72

-v-

Content C448HD C450HD | Users & Administrator's Manual

Adjusting Handset Volume 72

Adjusting Speaker Volume 72

Adjusting Headset Volume 72

Playing Incoming Call Ringing through USB Headset 73

Using the Phone as a USB Speaker 73

Viewing and Joining Meetings 73

Better Together over Bluetooth 74

Adding a Speed Dial 77

6 Performing Administrator-Related Operations 80

Setting up an E911 Emergency Location using TAC 80

Updating Phone Firmware Manually 86

Downloading Certificates 88

AudioCodes Android Phone Utility 88

Manually Performing Recovery Operations 89

Removing Devices from Intune Management 90

Configuring Audio-Related Parameters for Noisy Environments 97

Updating Microsoft Teams Devices Remotely 98

Applying Firmware to a Phone from a USB Disk 98

Managing Phones with the Device Manager 98

Configuring a Periodic Provisioning Cycle 99

Configuring TimeZone and Daylight Savings 100

Managing Devices with HTTPS 101

Supported Parameters 101

7 Troubleshooting 103

DSCP 103

Users 104

Network Administrators 105

Android Phone Utility 105

Capturing the Phone Screen 107

Running Tcpdump 107

Getting Information about Phones 108

Remote Logging (Syslog) 110

Getting Diagnostics 111

Activating DSP Recording 113

Deactivating DSP Recording 114

SSH 114

Getting the Phone IP Address 115

Installing the APK using SSH 115

Updating Phones using SSH Commands 115

Microsoft Teams Admin Center 116

Collecting Logs 117

Getting Audio Debug Recording Logs 119

Collecting Media Logs (*.blog) from the Phone 120

- vi -

Content C448HD C450HD | Users & Administrator's Manual

Capturing Traffic Using 'rpcapd' 120

Port Mirroring Network Monitoring 121

- vii -

CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual

1 Overview

TheAudioCodesC448HDandC450HD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C448HDandC450HDphonesareequippedwitha5-inchcolorcapacitive

touchscreenof1280x720resolution.

The C448HD phone is identical to the C450HD phone from the user's point of view,

with the exception of:

●The C448HD phone does not allow the 'Switch to Skype' feature (in the Admin

debugging tab); the C450HD allows this feature.

●The C448HD phone does not feature Bluetooth and Wi-Fi; the C450HD phone

features optional integrated Wi-Fi and Bluetooth support (contact your local

AudioCodes representative for more information about regional availability).

●The C448HD phone features one USB port; the C450HD phone features two.

●The C448HD phone does not feature an option to add the Expansion Module; the

C450HD phone features this option.

ThephonescanbemanagedbytheMicrosoftTeams&SkypeforBusinessAdminCenter.For

moreinformation,seehere.

AudioCodes'  Device  Manager  and  AudioCodes'  Redirect  Server  are  also  supported  for 

monitoring,upgradingandconfiguringthedevices.

ThephonesfeaturetheoptiontobeusedasaMicrosoftTeamsCompatible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.

SeehereforvideoblogsandblogsaboutAudioCodes'Teamsphones.

SeehereforvideosandwebinarsaboutAudioCodes'Teamsphones.

SeeheremarketingmaterialrelatedtoallAudioCodes'Teamsphones.

Specifications

Thefollowingtablesummarizesthephone'ssoftwarespecifications.

Table 1-1: 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

-1-

CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual

Feature Details

■Ambientnoiseblock

■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(roadmapfeature)(CalendarAccessand

MeetingDetails;PresenceIntegration;ExchangeCalendar

Integration;ContactPictureIntegration;CorporateDirectory

Access)

■Meetings(roadmapfeature)(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hereforrelatedMicrosoftdocumentation.

Configuration

and

Management

■Teamsadmincenter(TAC)

■OVOC/DeviceManager

Debugging

Tools

■AudioCodes'AndroidPhoneUtility(seeAndroidPhoneUtilityon

page105)

■LoguploadtoMicrosoftserver(certificationfor3rdpartySkypefor

Businessclients)

■RemoteloggingviaSyslog

■SSHAccess

■Capturingthephonescreen

■TCPdump

■AudioDebugrecordinglogs

■Medialogs(*.blog)

■Portmirroringnetworkmonitoring(C450HD)

-2-

CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual

Feature Details

■RemotePacketCapturenetworksnifferapplication

Localization

Support

■Multi-lingualsupport;thelanguagepacklistisnotyetfinalandis

subjecttomodification.

Hardware ■Five-inchcolorcapacitivetouchscreen,1280x720resolution,with

anintuitiveuserinterface.

■Wiredconnectivity:

✔TwoRJ-45[GigabitEthernet(GbE)](10/100/1000BaseT

Ethernet)ports:LANandPCport

✔RJ-9port(jack)forheadset

✔[C450HD]USBportforUSBheadset

C450HDwithDBWsuffixflavor:

●White USB port-hostportforUSBheadset

●Black USB port-defaultportbutcanbeconfiguredtohost

port.Toconfiguredevice/hostport:

setup_usbport2_mode.sh host(fromdevicetohost)

setup_usbport2_mode.sh device(fromhosttodevice)

Itcanalternativelybeconfiguredbysettingtheconfiguration

fileparameter'management/usbport2/mode'tothevalueof

USB_HOST_MODE/USB_DEVICE_MODE

✔[C448HD]USBportforUSBheadset

✔RJ-11interface

✔SurvivableBranchAppliance(SBA)

■Wirelessconnectivity(C450HDonly):

✔Dualband2.4GHz/5GHz,802.11b/g/nWi-Fisupport

✔Wi-Fisupportedprotocols:WEP,WPA-PSK/WPA2-PSKand

WPA/WPA2Enterprise(802.1X)PEAPonly

■Bluetoothsupport(C450HDonly);integrated;optional

■BluetoothWidebandSpeech(WBS)(C450HDonly)supportedfor

headsets

■ExpansionModule(C450HDonly;optional)

■Mounting:

✔Wallanddesktopmountingoptions

-3-

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