AudioCodes C455HD Series User Manual

CHAPTER4 Teams Application
C455HD | Users & Administrator's Manual
■ [Recommended]IftheDHCPserveroffersTimezoneOptions(100/101),thephonewillset
theobtainedtimezoneanddisplaythecorrecttimeonthescreen;thetimewillbe
calculatedbasedonanembeddedTimeZonedatabase,factoringinDST.
■ IftheDHCPserveroffersTimeOffsetOptiononly(2),thephonewillassigntheobtained
timeoffsettothefirstmatchedregioninthelistbutthereisagoodchanceitwon’treflect
theactualgeographicallocation,thereforethedisplayedtimemightbeincorrectinsome
cases.Forexample,ifthegiventimeoffsetisGMT-5andthephoneislocatedinMexico,
thephonewillgetthetime(andtheDSTsetting)fromcentraltimeandnotfromMexico
becauseinGMT-5thereisalsoCentralDaylightTime.
ThenetworkadministratormustmakesurethephonecanaccessthefollowingURLs(tocheck
connectivitywiththeinternet):
https://www.google.com/generate_204
http://connectivitycheck.gstatic.com/generate_204
http://www.google.com/gen_204
Iftheinternetconnectivitycheckfails,a‘NoInternetAccess’warningpopsuponthephone
screen.
Figure 4-1: Internet Connectivity Check - No Internet Access
ThiscanpointtoaproblemthatispreventingthephonefromfullyfunctioninginaTeams
environment.TheusercanignorethemessageiftheTeamsapplicationisfullyfunctioning,or
canreportaproblemiftheTeamsapplicationisnotfullyfunctioning.
➢ To sign in:
1. Connectthedevicetothenetwork;thisscreenisthendisplayed:
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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