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Summary of Contents for Karel NT421
- Page 2 IP SIP TELEPHONE SET TECHNICAL REFERENCE USER GUIDE FEBRUARY- 2012...
- Page 3 NT42I Technical Reference and User Guide...
- Page 4 AAA/27.02.2012 NT42I Tech. Ref. and User Guide– Ver. AAA – 27.02.2012 KAREL reserves the right to make modifications in product features mentioned in this document for development and improvement purposes, without prior notice. Individual products may possess characteristics different from those that have been mentioned in this...
- Page 5 ♦ Do not make any connection other than the extension connection of the KAREL telephone system. ♦ There is no part that you can repair or maintain in your device; therefore call the authorized technical service in case of any malfunction.
- Page 6 The hardware requirements of the phone are mentioned and the connection details are given. Required and alternative settings on the NT42I Phone Set are described for users. In case there is a problem, the information about points that must be considered is given. Best Regards, KAREL...
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Page 7: Table Of Contents
NT42I Technical Reference and User Guide CONTENTS TECHNICAL INTRODUCTION ....................1 Basic Specifications of NT42I ....................1 Specifications of NT42I ......................2 INTRODUCTION ........................3 Parts List on Delivery ......................3 GENERAL APPEARANCE ...................... 4 USER INTERFACE ........................5 USE OF THE TOUCH SCREEN ..................5 NAVIGATION KEYS AND SPECIAL FUNCTION KEYS ............ -
Page 8: Technical Introduction
NT42I Technical Reference and User Guide TECHNICAL INTRODUCTION BASIC SPECIFICATIONS OF NT42I VoIP • SIP v2.0 (RFC3261) Protocols Call Features • Call Back – Calling the caller of last incoming call • Call Blocking – Blocking all incoming calls • Call Holding –... -
Page 9: Specifications Of Nt42I
NT42I Technical Reference and User Guide SPECIFICATIONS OF NT42I Codecs G.711A G.726 24 Kbps G.711U G.726 32 Kbps G.723 G.726 40 Kbps G.726 16 Kbps G.729 G.723 Ratio 5.3 Kbps 6.3 Kbps LAN Protocols SIP v2.0 IP/TCP/UDP/RTP/RTCP/ICMP/ARP/RARP/SNTP • TFTP Server DHCP/DNS/SNTP Client HTTP Server Static/DHCP IP Assignment... -
Page 10: Introduction
NT42I Technical Reference and User Guide INTRODUCTION NT42I is IP based telephone which is perfectly compatible with KAREL’s new generation IP PBX systems with its superior and advanced properties. NT42I provides cheaper voice communication with high quality over existing IP lines. -
Page 11: General Appearance
NT42I Technical Reference and User Guide GENERAL APPEARANCE HF Speaker 5 Screen Adjustment Plug ** Numerical Key Pad Incoming Call LED* 6 Special Function Keys 10 Voice Control Keys 3 Handset 7 Navigation Keys 4 Screen 8 Special Function Keys * Incoming Call LED is also used for warning for messages. -
Page 12: User Interface
NT42I Technical Reference and User Guide USER INTERFACE USE OF THE TOUCH SCREEN NT42I IP Phone’s touch screen provides that make easily selection or process. Icon what you want to select that enough touch with fingertip on the screen. - don’t use sharp tools for scratching - don’t allow to contact with electric devices - don’t allow to contact with water the touch screen. - Page 13 NT42I Technical Reference and User Guide Voice Control Keys / Headset Key According to Headset controls under General Setting menu, the operations of these buttons are changed. If Headset control is activated, this button is used for activating the headset. When an incoming call is answered with using this key, the conversation will be made by using headset and when conversation ends, headset will be inactive.
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Page 14: Physical Connections
NT42I Technical Reference and User Guide PHYSICAL CONNECTIONS Connectors, which are connection places of LAN, AC Power Adaptor, Headset, Headset cables, are placed at the back of NT42I. For fast installation, firstly headset connection has to be made. Then with making AC Power Adaptor connection, telephone will be started. Finally LAN connection will be made with an ethernet cable. -
Page 15: Nt42I Network Settings
NT42I Technical Reference and User Guide NT42I NETWORK SETTINGS After making required installations, when telephone is powered on. Menu can be entered / reached with touch to the icon on the screen or with using display keys, user can enter menu, other sub menus. After entering Menu, following 10 main menus will be seen: Phonebook Call Records... - Page 16 NT42I Technical Reference and User Guide Menus, which will help user to assign IP address to NT42I, are at “Network Settings” under “Telephone Settings” menu. After entering “Network Settings” menu, an IP address should be assigned to NT42I with using existing LAN information. While assigning an IP address to NT42I, please contact to IT service of your company to avoid IP conflict.
- Page 17 NT42I Technical Reference and User Guide Select IP type ad Static and then press Confirm. After selecting IP type as Static, then make the adjustments listed below: IP Address Netmask Gateway Please ask your company’s authorized person about IP settings that are made. After entering IP address, Netmask and Gateway addresses, press “confirm“...
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Page 18: Nt42I Web Settings
NT42I Technical Reference and User Guide NT42I WEB SETTINGS Enter IP address of NT42I to one of your computer’s web browser. Be sure that your computer is connected to LAN. Press “Enter”. For example, the IP address of this NT42I is 192.168.178.247. Then the page below is going to be seen. -
Page 19: Network Settings
NT42I Technical Reference and User Guide NETWORK SETTINGS By clicking on Network Settings, user can check or change settings which are made manually. DNS setting should be adjusted by asking authorized persons. NT42I telephone set can register to 3 different servers but not at the same time. Defined servers can be activated whenever user wants. -
Page 20: Sip Settings
NT42I Technical Reference and User Guide SIP SETTINGS... - Page 21 NT42I Technical Reference and User Guide SIP Register This option must be “Enable” to make conversations over SIP server or IP PBX. When user registered to server, s/he can make connections with analog and digital extensions and use services that server supports. If this option is selected as “Disable”, user of NT42I can only make IP –...
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Page 22: Photo Frame Feature
NT42I Technical Reference and User Guide - Inband - RFC2833 - SIP Info NAT /NAT IP This is used to enable or disable NAT device. STUN Server At the beginning, entering STUN server’s IP address or entries about server will be enough. After making all adjustments, click on “Save”... -
Page 23: Troubleshooting
NT42I Technical Reference and User Guide TROUBLESHOOTING Telephone does not work even power connection is made. Be sure that adapter cable is connected to plug. Check that there is voltage at the plug and be sure that there is voltage at the plug. If every connection is OK, wait 25-30 seconds. Telephone will start.
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