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The C81 is a Oneu2010button SIP Door Phone with advanced audio system with the echo cancellation function. with the C72 touch screen control pad, you can speak to visitors at any time. Visit for more: https://dinstarindia.in/datasheet/C81.pdf
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One-button SIPDoorPhone C81 HDAudio UnlockdoorwithDTMF HD PoE Overview The C81 is an One‐button SIP Door Phone with advanced audio system with the echocancellationfunction. withthe C72touch screen control pad,you can speak tovisitorsat anytime. The C81 offerskeylesscontrolandconvenience forthe usersopening the door withouta key.The doorcan be openremotelyifthereis anelectronicdoorlock. It’s idealforcontrolcommunication andsecurity overinternetsuch asbusiness, institutionaland residentialapplications. G atewaytoVoIPWorld www.dinstar.com
HonestyFocus InnovativeOpen-minded AudioFeatures AccessControl • OneSIPline,DualSIPservers • DoorAccess:DTMFtones • DoorPhonefeatures: • Full‐duplex • Defaultautoanswer • Action URL/ActiveURI remote control • SpeedDial • HDvoice • Two‐wayaudiostream • Widebandcodec:G.722 • Narrowband codec: PCMA, PCMU, G.729,G723_53,G723_63,G726_32 • EchocancellationwithG.168 • Voice activitydetection(VAD) • Comfort noise generator(CNG) • Built‐inMicro and speaker • Acousticechocancellationaudiooutput AdministrationFeatures • Auto provisioning: FTP/TFTP/HTTP/HTTPS/PnP • HTTP/HTTPSWebManagement • Configurationkeypad‐based management • SNMP/TR069 • NTP/DaylightSavingTime • FirmwareUpgradeviaWeb • Syslog • Configurationbackup/restore Protocols&Network • SIPv1(RFC2543),v2(RFC3261) • SIPover TLS,SRTP • RTSP • TCP/IPv4/UDP • RTP/RTCP, RFC2198, 1889 • HTTP/HTTPS/FTP/TFTP • ARP/RARP/ICMP/NTP • DNSSRV/AQuery/NATPRQuery • Primary/SecondaryDNS • STUN,Sessiontimer • 802.1p/q,DSCP • DHCP/Static/PPPoE • DTMFMode:In‐Band,RFC2833and SIPINFO Environments • OperatingTemperature:‐20~60℃ • StorageTemperature:‐40~70℃ • RelativeHumidity:10~90% • PhysicalSpecifications • 1callbutton • Aluminumsurface,Metalbottomshell • PowerSupply:DC12V1Aor802.3afPoE • Power Requirements:802.3af PoEclass 3 • IEEE802.3afPower‐over‐Ethernet • 1xRJ4510/100MEthernet jacks • Wall‐mountedinstallation • Dimensions:200*130*32mm TechnicalSupport VisitDinstarwebsite(http://www.dinstar.com/)formoreproductdocuments,FAQ,and more. For betterservice,pleasecontact withsupport@dinstar.comor online support. GChengduCommsnsTechnologiesCo.,Ltd. Email:sales@dinstar.comwww.dinstar.com atewaytoVoIPWorld