AudioCodes C470HD User manual

User's and Administrator's Manual
AudioCodes 400HD IP Phone Series
C470HD IP Phone
Microsoft Teams Application
Version 1.19
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Notice C470HD | 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: January-19-2023
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.
Documentation Feedback
AudioCodes  continually  strives  to  produce  high  quality  documentation.  If  you  have  any 
comments(suggestionsorerrors)regardingthisdocument,pleasefillouttheDocumentation
Feedbackformonourwebsiteathttps://online.audiocodes.com/documentation-feedback.
Stay in the Loop with AudioCodes
Related Documentation
Document Name
C470HDIPPhoneforMicrosoftTeamsQuickGuide
C470HDIPPhoneforMicrosoftTeamsReleaseNotes
DeviceManagerAdministrator'sManual
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Notice C470HD | Users & Administrator's Manual
Document Name
DeviceManagerDeploymentGuide
https://docs.microsoft.com/en-us/MicrosoftTeams/phones-for-teams

- iii -

Content C470HD | 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 4
Android-Level Security Hardening 5
Google Play Services 6
Running Android in Kiosk Mode 6
Screen Lock 6
AudioCodes Private Key 6
Android Debug Bridge (ADB) 6
App Signing 7
Web Browser 7
Remote Configuration Management 7
AudioCodes Device Manager Validation 7
Sandboxing 7
Device File System 8
Keystore 8
Device Certificate 8
Data Protection 8
Debugging Interface 8
SSH Access: Reduced File System Privileges 9
Android Security Updates 9
AudioCodes Root CA Certificate 9
2 Setting up the Phone 11
Unpacking 11
Device Description 12
Front View 12
Rear View 15
Cabling 16
Mounting the Phone 16
Before Using AudioCodes Devices 16
3 Starting up 17
Configuring Device Settings 17
Configuring Wi-Fi 30
Connecting to an Available Wi-Fi Network 31
Manually Connecting to a Wi-Fi Network 34
Restoring the Phone to Default Settings 39
Performing a Hard Restore 39
Performing a Soft Restore 39
Recovery Mode 40
Locking and Unlocking the Phone 41
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Content C470HD | Users & Administrator's Manual
Automatic Lock 41
Unlock 41
4 Teams Application 43
Signing In 43
Multi-Cloud Sign-in 48
Remote Provisioning and Sign-in from Teams Admin Center 49
Getting Acquainted with the Phone Screen 53
Enabling Google Talkback 56
Opting in or out of Call Queues 59
Setting Status 59
Hot Desking 60
Changing Presence Status 61
Power Saving 63
Enabling Voicemail Support on CAP Users 63
Configuring Teams Application Settings 64
Setting up a Meeting 67
Using the People Screen 67
Accessing Voicemail 68
Using Audio Devices 69
Transferring Calls and Meetings across Devices 69
Signing Out 70
5 Performing Teams Call Operations 72
Making a Call 72
Microsoft Lightweight Calling Experience 73
Dialing a Missed Call 74
Select to Dial 74
Making an Emergency Call 74
Answering Calls 76
Ending an Established Call 76
Managing Calls 76
Parking a Call 77
Managing Teams Meetings 77
Using Live Captions 79
Raising a Hand During a Meeting 80
Hiding Names and Meeting Titles for Individual Devices 80
Reacting During a Meeting 80
Transferring a Call to Frequent Contacts 81
Transferring a Call to Work Voicemail 81
Viewing and Playing Voicemail Messages 81
Rejecting an Incoming Call, Sending it Directly to Voicemail 82
Adjusting Volume 83
Adjusting Ring Volume 83
Adjusting Tones Volume 83
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Content C470HD | Users & Administrator's Manual
Adjusting Handset Volume 83
Adjusting Speaker Volume 84
Adjusting Headset Volume 84
Playing Incoming Call Ringing through USB Headset 84
Using the Phone as a USB Speaker 84
Viewing and Joining Meetings 85
Better Together over Bluetooth 86
6 Performing Administrator-Related Operations 90
Setting up Automatic Provisioning 90
Setting up an E911 Emergency Location using TAC 91
Updating Phone Firmware Manually 97
Loading Certificates to Phones 100
AudioCodes Android Phone Utility 101
Certificate Enrollment using SCEP 103
Manually Performing Recovery Operations 104
Removing Devices from Intune Management 105
Configuring Audio-Related Parameters for Noisy Environments 112
Updating Microsoft Teams Devices Remotely 113
Applying Firmware to a Phone from a USB Disk 113
Enabling a Phone to be used as an Audio Device 113
Managing Phones with the Device Manager 114
Configuring a Periodic Provisioning Cycle 115
Configuring TimeZone and Daylight Savings 116
Managing Devices with HTTPS 117
Supported Parameters 117
7 Troubleshooting 119
DSCP 119
Users 120
Network Administrators 121
Android Phone Utility 121
Capturing the Phone Screen 123
Running Tcpdump 124
Getting Information about Phones 125
Remote Logging (Syslog) 126
Getting Diagnostics 129
Getting Logs 130
Activating DSP Recording 131
Deactivating DSP Recording 132
SSH 133
Getting the Phone IP Address 134
Installing the APK using SSH 134
Updating Phones using SSH Commands 134
Microsoft Teams Admin Center 136
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Content C470HD | Users & Administrator's Manual
Collecting Logs 136
Getting Audio Debug Recording Logs 138
Collecting Media Logs (*.blog) from the Phone 139
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
1 Overview
TheAudioCodesMicrosoftTeams-nativeC470HDIPphoneisafeature-rich,executivehigh-end
businessphoneforMicrosoftTeams.AnativeMicrosoftTeamsTotalTouchhigh-endbusiness
phone,itfeaturesalargecolortouchscreenandfullUCintegration.Thephoneisequipped
withalarge,singlesurface,fulltouchinterface,incorporatinganexceptionallysharp5.5"color
touchscreen,withoptionalsupportforWi-FiandBluetooth.
AudioCodesIPphonescanbeofferedaspartofits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.
C470HDFeatures:
■NativesupportforMicrosoftTeams
■Graphicalportrait5.5”colortouchscreen(1280x720)withmulti-lingualsupport
■GbEsupport
■USBheadsetsupport
■Bluetooth5.0support
400HDIPPhoneSeriesHighlights:
■Superiorvoicequality
■Fullduplexspeakerphone
■Robustsecuritymechanisms
■PoEorexternalpowersupply
■CentralizedmanagementsupportedbyAudioCodesDeviceManager(availablefor
downloadfreeofcharge)
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
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
Feature Details
■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121)
■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
■EchoCanceler(EC)debugrecording
■Medialogs(*.blog)
■RemotePacketCapturenetworksnifferapplication
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
Feature Details
Localization
Support
■Multi-lingualsupport;thelanguagepacklistisnotyetfinalandis
subjecttomodification.
Hardware ■Graphicalportrait5.5"colortouchscreen,1280x720resolution,
withmulti-lingualsupport
■Wiredconnectivity:
✔TwoRJ-45[GigabitEthernet(GbE)](10/100/1000BaseT
Ethernet)ports:LANandPCport
✔USBport
✔RJ-11interface
✔SurvivableBranchAppliance(SBA)
■Wirelessconnectivity:
✔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;integrated;optional
■Power:
✔DCjackadapter12V
✔PowersupplyAC100~240V
✔PoEClass2:IEEE802.3af(optional)
■Keys:
✔Hold
✔Mute
✔Transfer
✔Volume
✔Headset(includingLED)
✔Speaker(includingLED)
✔Back
✔Home
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
Allowing URLs, Ports (Security)
ThissectionshowsnetworkadministratorswhichURLs/PortstoallowwhendeployingTeams
phones(security).
Fromthedevicepointofview,thefollowingtablesummariestheportsthephoneuses.See
alsoMicrosoft'sguidetotheportsthephoneuses.
Table 1-2: URLs / Ports to Allow when Deploying Teams Phones (Security)
Server Role Service Name Port Protocol Notes
DNSServer All 53 DNS -
AudioCodes
Device
Manager
AudioCodes
DM
443 HTTPS AudioCodesdevice
managementserver
AudioCodes
Redirect
service
AudioCodes
DM
443 HTTPS AudioCodesredirectservice
redirect.audiocodes.com
NTP
timeserver
AndroidNTP 123 UDP -
TimeZone
Database
TimeZones 443 HTTPS TimeZoneDatabase(often
calledtzorzoneinfo)
Microsoft
AppsArtifacts
server
Package
manager
- - Microsoftwillberequestedfor
theprotocolandportand
FQDN.TheseURLsare
providedbytheAdminagent.
Security Guidelines for Android-based Native Teams Devices
AudioCodes'Android-basedNativeTeamsdevicesarepurpose-builtandcustomizedfor
MicrosoftTeamscallingandmeeting.CustomersmightperceiveAndroid-basedproductsasvul-
nerabletosecurityissuesbutsecurityislessofanissueondevicespurpose-builtandcus-
tomizedforMicrosoftTeamscallingandmeeting.Securityisinfactenhancedonthesedevices
as part of their default use.
Whenanalyzingdevicesecurity,twolevelsmustbeaddressed:
■AuthenticationandsecuritywithrespecttoTeamsconnectivityanduse
■Androidlevel/systemofthedevice
AudioCodesrecommendsthefollowing:
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
■Usethesign-inmodeSign-in with other device option.Inthismode,usersdonottypethe
passwordonthedevicebutinsteadobtainacodeontheirPC/laptoptobeusedtosign-in;
thephoneobtainsaprivatetokenthatenablesittoaccessTeamscloud;thistoken,unlike
apassword,allowsonlythatdevicewhichobtainedittoreuseit.Thetokenisstoredonthe
securedfilesystem.
■LeverageMulti-Factor-authentication(MFA)toimprovesign-insecurity.
■Reducetheexpirationtimeofthesign-infordeviceswhichareconnectedremotely
(outsidetheorganization'snetwork)versusdevicesinsidetheorganization'spremises.
AudioCodesrecommendsvisitingMicrosoft'stechnicalpagesformoresecurityguidelinesand
policiesforMicrosoftTeamsadoption:
■Overviewofsecurityandcompliance-MicrosoftTeams|MicrosoftDocs
■IdentitymodelsandauthenticationforMicrosoftTeams-MicrosoftTeams|Microsoft
Docs
■SignintoMicrosoftTeams-MicrosoftTeams|MicrosoftDocs
Android-Level Security Hardening
Major  Android- level  system- level  developments  have  been  incorporated  into  AudioCodes' 
devicestoimprovesecurity:
■SeeGooglePlayServicesonthenextpage
■SeeRunningAndroidinKioskModeonthenextpage
■SeeScreenLockonthenextpage
■SeeAudioCodesPrivateKeyonthenextpage
■SeeAndroidDebugBridge(ADB)onthenextpage
■SeeAppSigningonpage7
■SeeWebBrowseronpage7
■SeeRemoteConfigurationManagementonpage7
■SeeAudioCodesDeviceManagerValidationonpage7
■SeeSandboxingonpage7
■SeeDeviceFileSystemonpage8
■SeeKeystoreonpage8
■SeeDeviceCertificateonpage8
■SeeDataProtectiononpage8
■SeeDebuggingInterfaceonpage8
■SeeSSHAccess:ReducedFileSystem
■SeeAndroidSecurityUpdatesonpage9
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
Google Play Services
GogglePlayserviceswereremovedfromAudioCodesdevicessoftware.AccesstoanyGoogle
storeorPlayserviceisnotallowed.
■UpdatingtheAudioCodesdevice'sAndroidsoftwareandapplicationisperformedvia
specialsoftwarecomponentsthateitherconnecttotheTeamsAdminCenterorto
AudioCodes'DeviceManageroverasecuredchannel.
Running Android in Kiosk Mode
AndroidKioskLockdownsoftware'locksdown'Androiddevicestoonlyallowessentialappsby
disablingaccessto theHome/Launcher.UsingAndroidKiosk Lockdownsoftware,Android
devicescanbeconvertedintopublickioskterminalsorsecuredworkdevices.
■OnlyspecificMicrosoftappsandAudioCodes-signedappsthatwerecertifiedandapproved
inthecertificationprocesscanruninKioskmode;evenifamalicioususermanagesto
installanewunauthorizedapponthefilesystem,thelauncheronthedevicewillonlyrun
thosespecificapprovedappsandthiscannotbechangedinruntime(onlywithanew
softwarecodeprovidedbyAudioCodes).
Screen Lock
AudioCodesdevicesuseascreenlockmechanismtopreventanymalicioususer/usersfrom
gainingaccesstoCalendarinformationand/orActiveDirectorylistofemployeesand/or
triggering  unauthorized  calls  from  the  device.  After  enabling  screen  lock,  the  device 
automaticallylocksafterapreconfiguredperiod;acodeisrequiredtounlockthedeviceand
resumefulloperation.
AudioCodes Private Key
ThesystemsoftwareonAudioCodesdevicesissignedwithAudioCodes'privatekey.Userscan
replace the complete software only with new software that is also signed by  AudioCodes'
privatekey.
Thispreventsusersfromreplacingthecompleteover-the-air(OTA)packageofthedevicewith
anynewsystemsoftware,unlessthesoftwareisfullysignedbyAudioCodes.
Android Debug Bridge (ADB)
The device does not allow access to ADB.
AudioCodesdisabledtheAndroidDebugBridge(ADB)applicationandkeepstheTeamsapp
runninginthefrontallthetime.Asaresult,it'simpossibletoinstallotherappsfromunknown
sources,andtosideloadapps.
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
App Signing
Android  requires  all  apps  to  be  digitally- signed  with  a  developer  key  before  installation; 
currently,theAudioCodesdevicesverifythatappsaresignedbyMicrosoft.
Appsigningpreventsmalicioususer/usersfromreplacingaMicrosoft-signedappwithanapp
that"pretends"tobeMicrosoftbutwhichlackstheprivatekeythatisknownonlytoMicrosoft.
Web Browser
TheAudioCodesdevicedoesnotincludeaWebbrowser.Userscannotbrowsetothepublic
internetorinternalintranet.AllWebservicesarecustomizedtoconnecttoOffice365services
andAudioCodes'managedservicessuchastheOneVoiceOperationsCenter(OVOC).
WithoutaWebbrowser,malicioususer/userswillnotbeabletoaccessthedeviceandbrowse
fromitasatrusteddeviceintothecustomernetwork.
Remote Configuration Management
AudioCodesdevicesdonothaveanembeddedWebserver.Configurationandmanagementare
performedusingoneofthefollowingremoteinterfaces:
■MicrosoftTeamsAdminCenter(forNativeTeamsdevices)overHTTPSprotocols,enabled
afterasuccessfulsign-inauthenticationprocess.
■AudioCodesDeviceManager(partofAudioCodes'OVOCsuite)overHTTPS.
■DebugginginterfaceoverSSH.NotethatSSHmustbedisabledbydefaultandenabledonly
perspecificcasefordebuggingpurposesonly.
AudioCodes Device Manager Validation
TheAudioCodesNativeTeamsdevicesvalidatetheAudioCodesDeviceManageridentityusinga
knowntrustedcertificate:
■Thedeviceisshippedwithknowntrustedcertificateinstalled.SeeAudioCodesRootCA
Certificateonpage9.
■Fortheinitialconnection,theAudioCodesDeviceManageraccessesdevicesusingaknown
trustedcertificate.
■Onceasuccessfulsecuredconnectionhasbeenestablishedbetweenthedeviceandthe
DeviceManager,theusercanreplacethetrustedcertificateontheDeviceManagerandon
thephone,andre-establishtheconnectionleveraginganyPrivateTrustedCertificate.
Sandboxing
AudioCodesdevicesuseAndroidApplicationSandboxsothateachapplicationcanaccessits
owndataandisisolatedfromotherapplications.Thispreventsamaliciousappfromaccessing
thecodeorthedataofotherapplicationsinthesystem.
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
Device File System
TheAudioCodesdevice'sfilesystemisencryptedonC470HDdevices.Customersmayenforcea
policyofdeviceencryptionviaMicrosoft'scloud-basedIntuneservice.
Keystore
WithAudioCodesdevices,thecertificatekeysareencryptedonthedevicefilesystem.
Device Certificate
AudioCodesdevicesareshippedwithauniquecertificatewhichissignedbyAudioCodesRoot
CA.Networkadministratorscaninstallathird-partycertificateonthephoneinthecustomer’s
trusted  environment.  Network  administrators  should  follow  the  following  guidelines  when 
replacingtheexistingdevicecertificate:
■ThedevicecertificateURLwillonlybevalidifnoSCEPserverURLispresent
■Usethefollowingtwoparameterstosetthedevicecertificateinthephone'sconfiguration
file:
●security/device_certificate_url=http://<server-ip>/device.crt
●security/device_private_key_url=http://<server-ip>/device.key
Trusted certificates are provisioned by parameter security/ca_certificate/[0-4]/
Data Protection
AudioCodesdevicesrunAndroidwhichhasintegralproceduresforprotectingandsecuringuser
data.
Debugging Interface
■AudioCodesdevicesleverageSSHasadebugginginterface.
■AudioCodesrecommendsthatcustomersdisableSSHondevicesviaAudioCodes'Device
Manager(OVOC).
■AudioCodesrecommendschangingtheAdminpasswordfromthedefault,viatheTeams
AdminCenterorAudioCodes'DeviceManager(OVOC).
■Whenadevice-ormultipledevices-needstobedebugged,userscanenableSSHonit/
them,accessSSHwiththenewAdminpasswordforthedebuggingphase,anddisableSSH
oncedebuggingisfinished.
SSH is by default disabled and can be enabled with Administrator permissions in the
phone screen (Device Administration > Debugging > SSH).
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
SSH Access: Reduced File System Privileges
AdministratoruserswhoaccessSSHhavereducedfilesystemprivileges.Forexample,filescan-
notbedeleted,andsomepartsofthefilesystemcannotbereviewed.Thispreventsmalicious
actionsorunintendederrorsthatmightcausedamagetothedevice.
Android Security Updates
AudioCodesregularlyadoptsandintegratesAndroidsecurityupdates.
Forreference,seehere.
AudioCodes Root CA Certificate
ThefollowingfigureshowstheAudioCodesRootCACertificate.
-----BEGIN CERTIFICATE-----
MIIDMTCCAhmgAwIBAgIBATANBgkqhkiG9w0BAQsFADAfMQwwCgYDVQQKE
wNBQ0wx
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CHAPTER1 Overview C470HD | Users & Administrator's Manual
DzANBgNVBAMTBlJvb3RDQTAeFw0wMDAxMDEwMDAwMDBaFw0zMDAxMD
EwMDAwMDBa
MB8xDDAKBgNVBAoTA0FDTDEPMA0GA1UEAxMGUm9vdENBMIIBIjANBgkqh
kiG9w0B
AQEFAAOCAQ8AMIIBCgKCAQEA6GK495KUCXAm/UE17G4/cjnZN4LNaxYEYz
bfZL0a
EhgSKYt/LQ+iUcDhojsneusNgrcGkpwKklKsGsvGWmSRNULV01CW+TX2VJN7
3+hh
V0uzhyOIYAUhbDaoqNM6Kp5b7sJ1ew4Ig9kfd/ma9Czl5koESLlw/inLj/r+rD96
mUcPElWrKspv7Qy4I14fsK/yMArixRopTL1munVVPpSFM9Jh8IY3JHyr5CQJXKK
s
EhGAJsnHaRqsR2Su3X/WtslgEF+cvP34pxhlhFL29nMfnaFATSS3rgGaFlSvl1ZS
esLMqkWjp9cqGYrvt7K61sYnvMMb+o/KbWqVokXb+Fr7bwIDAQABo3gwdjAMB
gNV
HRMEBTADAQH/MB0GA1UdDgQWBBQDXySn9hz15lDraZ+iXddZGReB+zBHB
gNVHSME
QDA+gBQDXySn9hz15lDraZ+iXddZGReB+6EjpCEwHzEMMAoGA1UEChMDQU
NMMQ8w
DQYDVQQDEwZSb290Q0GCAQEwDQYJKoZIhvcNAQELBQADggEBAI0rUywo
mmWWJnH3
JOfKiS3+VnX5hJITZymvWanMXUz/6FonHccPXEBYTrUYwhiWx3dwELAFXDFK
kxMp
0KKWZ4F39cAOLRjqhzya+xUeeJ9HQZCXYAJ6XgvTfN2BtyZk9Ma8WG+H1hNv
vTZY
QLbWsjQdu4eFniEufeYDke1jQ6800LwMlFlc59hMQCeJTenRx4HdJbJV86k1gBU
E
A7fJT1ePrRnXNDRz6QtADWoX3OmN7Meqen/roTwvLpEP22nYwvB28dq3JetlQ
Kwu
XC4gwI/o8K2wo3pySLU9Y/vanxXCr0/en5l3RDz1YpYWmQwHA8jJIu8rxdhr+VNQ
Zv6R/Ys=
-----END CERTIFICATE----
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CHAPTER2 Setting up the Phone C470HD | Users & Administrator's Manual
2 Setting up the Phone
Theinstructionsfollowingshowhowtosetupthephone.
Unpacking
When  unpacking,  make  sure  the  items  listed  in  the  phone's  Quick Guide  are  present  and 
undamaged.
Ifanythingappearstobemissingorbroken,contactthedistributorfromwhomyoupurchased
thephoneforassistance.
Fordetailedinformation,seethephone'sQuick Guideshippedwiththedeviceoravailablefrom
AudioCodes.
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CHAPTER2 Setting up the Phone C470HD | Users & Administrator's Manual
Device Description
Use  the  following  graphics  to  identify  and  familiarize  yourself  with  the  device's  hardware 
functions.
Front View
Thefrontviewofthephoneisshowninthefigureanddescribedinthetable.
Figure 2-1: Front View
Table 2-1: Font View Description
Item # Label/Name Description
1RingLED Indicatesphonestatus:
■Green:Idlestate
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CHAPTER2 Setting up the Phone C470HD | Users & Administrator's Manual
Item # Label/Name Description
■Flashingred:Incomingcall(ringing)
■Red:Answeredcall
2TFTtouch
screen
ThinFilmTransistortouchscreen,atypeofLCD(LiquidCrystal
Display)interactivescreenwhichdisplayscallinginformation
andletsyouconfigurephonefeaturesbytouchingtheglass.
3Home ■Touchthekeytoreturntothephone'shome(idle)screen
fromanyscreen.
■Long-pressthekeytoopenthedeviceSettingsscreen.
■Visualindications:
✔Ifthekeyisilluminatedred(constantly,without
flashing),itindicates‘Nonetwork’;touchingthekey
thengivestheuserdirectaccesstotheNetwork
menu.
✔Flashingredindicatesasystemalert,forexample,
whenausertriestochargeviathedevice’sUSBport
(seethenoteafterthistable).
✔Flashingyellowindicatesthatthephoneisinthe
processofasoftwareupgrade.
4Hold Touchtoplaceanactivecallonhold.
5Volume Increasesordecreasesthevolumeofthehandset,headset,
speaker,ringtoneorcallprogresstones.SeeAdjusting
Volumeonpage83fordetailedinformation.
6'Back'key Touchtoreturntothepreviousscreen.
7Calltransfer Touchtotransferacalltoathirdparty.
8Speaker Touchtoactivatethespeaker,allowingahands-free
conversation.
9Headset Touchtoactivateacallusinganexternalheadset.
10 Mute Touchtomuteanestablishedcall.
11 USBport ForaUSBheadset.Seealsothenotebelow.
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