AudioCodes C455HD Series User Manual

CHAPTER4 Teams Application
C455HD | Users & Administrator's Manual
4 Teams Application
Thefollowingdescribesfunctionsrelatedtothephone’sMicrosoftTeamsapplication.
Signing In
Using TeamsIPPhonePolicy, network administrators can create the following users
who can then sign in to the phone:
● UserSignin: All features are available, i.e., calls, meetings and voicemail
● MeetingSignIn: Only meetings are available
● Common Area Phone (CAP) users who can sign in to the device with a CAP
account (as a CAP user) using TeamsIPPhonePolicy as follows:
✔ CAP SignIn (SearchOnCommonAreaPhoneMode=Enabled): The user has
calling and searching capability
✔ CAP SignIn (SearchOnCommonAreaPhoneMode=Disabled): The user has
calling capability
Beforeusingthephone(aftersettingitup),youneedtosigninforsecuritypurposes.Youcan
sign-inwithusercredentialslocallyonyourIPphone,orremotelywithyourPC/smartphone.
‘ModernAuthentication’isalsosupported.
Beforesigningin,thenetworkadministratormustmakesurethephonegetsthelocaltime,
usingeither:
■ NTPTimeserver2.android.pool.ntp.org
■ DHCP Option 42 (NTP).IfDHCPOption42(NTP)isoptedfor,thenetworkadministrator
mustspecifytheserverprovidingNTPforthenetwork.
■ time.windows.com.PhonescanbeconfiguredwiththisNTPserveroptionwhenmigrating
fromSkypeforBusinessphonestoNativeTeamsphones.Theoptionaccelerates
customers’migrationprocess.TheNativeTeamsphones’defaultNTPserverissometimes
notconfiguredinDHCPOption42.IfthedefaultNTPserverisnotconfiguredinDHCP
Option42,thephonesattempttheGoogleNTPserver.IfDHCPOption42isnotconfigured
andtheGoogleNTPserverisblocked(forexample),thephoneswillusethisserver
(time.windows.com)andifit’sunavailable,theservertime.nist.govdescribednext.
■ time.nist.gov.PhonescanbeconfiguredwiththisNTPserveroptionwhenmigratingfrom
SkypeforBusinessphonestoNativeTeamsphones.Theoptionacceleratescustomers’
migrationprocess.TheNativeTeamsphones’defaultNTPserverissometimesnot
configuredinDHCPOption42.IfthedefaultNTPserverisnotconfiguredinDHCPOption
42,thephonesattempttheGoogleNTPserver.IfDHCPOption42isnotconfiguredandthe
GoogleNTPserverisblocked(forexample),thephoneswillusethisserver(time.nist.gov)
iftheservertime.windows.comdescribedpreviouslyisunavailable.
Inmostregions,DaylightSavingTimechangestheregionaltimetwiceayear.DSTValidation
allowsmaintainingaccuratetime.Twooptionsforphonestogetthecorrecttimeare:
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AudioCodes C455HD Series Specifications

General

SIP Accounts	Up to 16
Wall Mountable	Yes
Connectivity	Ethernet (10/100/1000 Mbps)
Bluetooth	Bluetooth 5.0
USB Ports	2 x USB 2.0
Headset Support	Yes, RJ-9 and USB
Power	PoE (802.3af) or AC adapter
Audio	HD voice, Acoustic echo cancellation, Background noise suppression
Codecs	G.711, G.722, Opus
Operating System	Android based
Supported Protocols	SIP, RTP, SRTP, HTTP, HTTPS, TLS, DHCP, DNS, TFTP
Supported Languages	Multilingual support
Weight	900g