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IP door phone

IP door phone

model:KNZD-42 IP

The door phone is an ip intercom that is used to control access. The intercom uses the ip protocol, network communication, and is often used in apartments as access control.
ip door phone description

IP door phone KNZD-42 IP 

The ip door phone is suitable for any access phone system. This ip intercom is often used outside the door as a control access. Support a variety of door opening methods to support visitors voice intercom.We can provide the entire ip pbx system to control the entire ip access control system.The door phone is a sip intercom as the access phone.


 SIP V1/V2(RFC2543/RFC3261)

   •One speed dial Key

   •Integrated Numeric Keypad

   •Support PoE(802.3af)

   •DTMF Switch control



  supports SIP 2.0 platform,effective inter connection and inter working with the mainstream IPPBX manufacturers

 •High-end chip

  Equipped with the latest Reliable chip set

 •Carrier standard voice

  Full duplex hands- free speaker phone,carrier standard voice

 •Flexible of lock approach

  passwords , DTMF Switch control

 •A key t o call

  One Speed dial Key

 •Multiparty calls

  Holding/waiting 3 ways call /conference

 •Easy installation

  integration into the existing LAN

 •Visitors leave a message

  Provide access to the message and playback message through the SIP phone

 •Simple maintenance

  support online software upgrades and web management way

 •Protective level

  IP53 against dust, water, and mechanical damage

Target Groups

 Business: offices, shopping areas

 Education: universities, campuses, schools, sports areas

 Healthcare: hospitals, laboratories,Pharmaceutical factory

 Logistics & Transportation: airports, parking lots or garages

 Industries: factories,product center


ip door phone design


EN55022:emissions           EN55024:immunity

Ingress Protection: GB4208-93 IP66 FCC   ITU-T Re commenedations K21

EMC:EN50121(Railway application-Electromagnetic Compatibility)


support sip 2.0 for apartment or home security   KNZD-42

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==>>>> Product Specification

ip door phone certificate

Technical Parameters

Signalling protocol Interface
SIP 2.0( RFC2833) Power supply 12V±15%/1A DC or PoE
Quick dial buttons Buttons  are  made  of  stainless  steel  material, strong  and  durable. LAN 10/100BASE-TX s Auto-MDIX, RJ-45
Number of speed dial buttons 1 The recommended cable Super five or more
Numeric keypad touch buttons Relay outputs NC/NO contacts, max 30V/1A AC/DC
Audio Active relay output 12V/500mA DC
Microphone 1A 8Ω Mechanical
Loudspeaker 3W Cover material Aluminum alloy cover, plastic pan
Hands-free haft-duplex support Operating temperature range 0°C – 55°C
Audio stream Storage temperature range -40°C – 70°C
Support protocol RTP Relative humidity 10% - 95% (not condensing)
Codecs G.711, G.729,  G.722, GSM, G.726 ,iLBC Installation Embedded installation

External dimensions 174.5×96×44 mm

Protection level IP53


VoIP SIP2.0 telephone        DTMF dialing                

MTBF:100000hours          MTTR: 2 hours

Free dial (maximum length of each number is 32 digits)            

Communication: Full duplex 2-way

Call Control Signaling:VOIP SIP Info(DTMF), RFC 2833(DTMF)

Power:Power over Ethernet, IEEE802.3af, Class 0  Local power, 12VDc,Idle 2W, Max 10W

Auxiliary Contacts: (option)

1 Aux Output, dry contact

Dry contact Load parameter

Rated load:0.3 A at 125 VAC; 1 A at 30 VDC

Rated carry current:1A

Max.switching voltage:125 VAC,60VDC

Audio Codes:G.711, G.722, G.729,G723,G.726

Network:10/100 BaseTX Ethernet, RJ45 connectors, Cat5e or better 

IP Protocols:IPv4, TCP, UDP, RTP, DHCP, SIP

1 x LAN Power over Ethernet(PoE,802.3af)

1 x LAN(IEEE 802.1x), Network Access Control(IEEE 802.1x),STP(IEEE 802.1d), RSTP(IEEE 802.1d-2004)

Programming:Non-volatile flash memory programming and configuration through Web GUI

Management and Operation:DHCP and static IP, remote automatic software upgrade, centralized monitoring 

Echo cancellation code: ITU-T G.167/G.168 

==>>>>Telephone System

ip door phone in door system

The ip doorphone, used in the ip pbx system, uses the ip pbx server to connect the entire phone system, and the dispatcher manages and monitors the entire access control system.
how to work the ip door phone
how to work the ip door phone

==>>>>Product Application

ip door phone installation method under different circumstances

ip door phone wall and embeded mounting

ip door phone Connection terminal

ip door phone Connection terminal

ip door phone in outdoorip door phone in outdoor

==>>>>Product Detailed Pictures

IP door phone front view

ip door phone front view ip door phone front view

==>>>>Product Video

==>>>>Please Email US marketing@koontech.com

This product model:KNZD-42 IP


Green-December 27, 2018-Australia

Not long ago, a number of door phone intercom were purchased and installed in the entire community. The security of the entire community was greatly improved, and the entry of outsiders into the community was reduced.