AudioCodes 400HD Series User manual

User's and Administrator's Manual
AudioCodes 400HD IP Phone Series
C448HD | C450HD IP
Phones
Microsoft Teams Application
Version 1.17
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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.
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.
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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
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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
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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
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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
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Content C448HD C450HD | Users & Administrator's Manual
Capturing Traffic Using 'rpcapd' 120
Port Mirroring Network Monitoring 121
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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
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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)
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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
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
Feature Details
✔Oneanglefordesktopmount,anotherangleforwallmount
■Power:
✔DCjackadapter12V
✔PowersupplyAC100~240V
✔PoEClass3:IEEE802.3af(optional)(appliesonlytoC450HD)
■Keys:
✔VOICEMAILmessagehotkey(includingLED)
✔4-waynavigationbuttonwithOKkey
✔MENU
✔REDIAL
✔HOLD
✔MUTE(includingLED)
✔TRANSFER
✔VOLUMEcontrolkey
✔HEADSET(includingLED)
✔SPEAKER(includingLED)
✔BACK
✔CONTACTS
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
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
Server Role Service Name Port Protocol Notes
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:
■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
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
■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below
■SeeRunningAndroidinKioskModebelow
■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thenextpage
■SeeWebBrowseronthenextpage
■SeeRemoteConfigurationManagementonpage8
■SeeAudioCodesDeviceManagerValidationonpage8
■SeeSandboxingonpage8
■SeeDeviceFileSystemonpage8
■SeeKeystoreonpage8
■SeeDeviceCertificateonpage8
■SeeDataProtectiononpage9
■SeeDebuggingInterfaceonpage9
■SeeSSHAccess:ReducedFileSystem
■SeeAndroidSecurityUpdatesonpage9
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.
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
■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.
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.
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
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RootCA:
■ThedeviceisshippedwithknownRootCAsinstalled.SeeAudioCodesRootCACertificate
onpage10.
■Fortheinitialconnection,theAudioCodesDeviceManageraccessesdevicesusingaknown
CA.
■Onceasuccessfulsecuredconnectionhasbeenestablishedbetweenthedeviceandthe
DeviceManager,theusercanreplacetheRootCAontheDeviceManagerandonthe
phone,andre-establishtheconnectionleveraginganyPrivateRootCA.
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.
Device File System
TheAudioCodes device's  file system is encrypted on C450HD-DBW devices.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trustedCAs:
■ThedevicecertificateURLwillonlybevalidifnoSCEPserverURLispresent
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
■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
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).
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.
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
Upgrading from Android 7 to Android 9 security patch level dated April 5, 2021
●On most C450HD / C448HD devices, upgrade to version 1.17 is performed with
no further actions required by the user or the network administrator. For
exceptional cases, see the next bullets.
●Upgrade to 1.17 on C450HD / C448HD can be performed only if the device was
upgraded to 1.14 before. Upgrade from 1.14 to 1.17 can be performed through
Microsoft TAC or through AudioCodes Device Manager.
●Customers upgrading from version 1.8 / 1.10 must take these steps:
✔Upgrade to 1.14. Since direct upgrade to 1.17 is not possible, the customer
must first upgrade to 1.14 and then to 1.17.
✔Customers with 1.8 / 1.10 cannot use the TAC to upgrade to 1.17. An
upgrade can be performed using AudioCodes Device Manager or
AudioCodes Android Phone Utility. Contact AudioCodes support for further
assistance.
●With C450HD 2G-RAM devices (TEAMS-C450HD-DBW), a restore to default will
automatically occur and must be followed with a sign-in by the users (per device);
the device will become non-encrypted, similar to the C450HD non-DBW and the
C448HD that were non-encrypted in previous versions.
AudioCodes Root CA Certificate
ThefollowingfigureshowstheAudioCodesRootCACertificate.
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
-----BEGIN CERTIFICATE-----
MIIDMTCCAhmgAwIBAgIBATANBgkqhkiG9w0BAQsFADAfMQwwCgYDVQQKE
wNBQ0wx
DzANBgNVBAMTBlJvb3RDQTAeFw0wMDAxMDEwMDAwMDBaFw0zMDAxMD
EwMDAwMDBa
MB8xDDAKBgNVBAoTA0FDTDEPMA0GA1UEAxMGUm9vdENBMIIBIjANBgkqh
kiG9w0B
AQEFAAOCAQ8AMIIBCgKCAQEA6GK495KUCXAm/UE17G4/cjnZN4LNaxYEYz
bfZL0a
EhgSKYt/LQ+iUcDhojsneusNgrcGkpwKklKsGsvGWmSRNULV01CW+TX2VJN7
3+hh
V0uzhyOIYAUhbDaoqNM6Kp5b7sJ1ew4Ig9kfd/ma9Czl5koESLlw/inLj/r+rD96
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CHAPTER1 Overview C448HD C450HD | Users & Administrator's Manual
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 C448HD C450HD | 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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