Karel NT421 Technical Reference And User's Manual

Brand: Karel

Model: NT421

Type: Technical Reference And User's Manual

Karel NT421: Feature-rich IP phone that seamlessly integrates with Karel's IP PBX systems. Enjoy crystal-clear voice communication over IP lines, leveraging cost savings and enhanced call quality.

Key Features:

Intuitive touch-colored screen for easy navigation and visual appeal.
Dual Ethernet ports for connecting to both the phone and a computer, extending internet access.
Bluetooth connectivity for hands-free communication and device pairing.
Advanced call features: call forwarding, call transfer, three-party conferencing, and call holding.
Customizable phonebook with a capacity of 128 numbers for quick dialing.

Key Features:

Intuitive touch-colored screen for easy navigation and visual appeal.
Dual Ethernet ports for connecting to both the phone and a computer, extending internet access.
Bluetooth connectivity for hands-free communication and device pairing.
Advanced call features: call forwarding, call transfer, three-party conferencing, and call holding.
Customizable phonebook with a capacity of 128 numbers for quick dialing.

IP SIP

TELEPHONE SET

TECHNICAL REFERENCE

AND

USER GUIDE

FEBRUARY- 2012

NT42I Technical Reference and User Guide

III

Version Table

Guide Date/Version

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

document, due to their differences in software and hardware versions.

NT42I Technical Reference and User Guide

ISSUES TO PAY ATTENTION TO

♦ Read this guide carefully before you use your device and keep it for later

reference.

♦ Any mistake with the connections in your device may damage it or your

exchange. Especially the connection to the exchange must be made by the

Authorized Technical Services. The explanations about connections in the User’s

Guide have been intended to give information only.

♦ A connection box comes with your device. The connections must be made as

described in the installation chapter.

♦ In case you need a connection of plug-outlet type, never apply electric plugs

and outlets; use plugs, outlets and connection components that are specific to

telephones.

♦ 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.

♦ Keep your device away from direct sunlight.

♦ Do not let any liquid substance spill on your device.

♦ Do the exterior cleaning of your device with a slightly moistened piece of cloth.

♦ Do not apply any chemicals for cleaning.

♦ Please call your authorized dealer in case you would like to change the place

of your device. Use its own packing to carry the device.

♦ Please do not use exterior signal for the test operations or maintenance. Any

signal which is used externally may damage your device.

NT42I Technical Reference and User Guide

PREFACE

Chapters in this guide have been prepared in order to give basic information about the NT42I

IP Phones.

- The basic information about features of the phone has been given and the hardware

of the device is described.

- The keys required for basic use of the phone's are mentioned.

- 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

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 ...................................................... 5

PHYSICAL CONNECTIONS .................................................................................................... 7

NT42I NETWORK SETTINGS ................................................................................................. 8

NT42I WEB SETTINGS ......................................................................................................... 11

System Information ............................................................................................................ 11

Network Settings ................................................................................................................ 12

SIP Settings ........................................................................................................................ 13

PHOTO FRAME FEATURE ............................................................................................... 15

TROUBLESHOOTING ........................................................................................................... 16

NT42I Technical Reference and User Guide

TECHNICAL INTRODUCTION

BASIC SPECIFICATIONS OF NT42I

VoIP

Protocols • SIP v2.0 (RFC3261)

Call Features • Call Back – Calling the caller of last incoming call

• Call Blocking – Blocking all incoming calls

• Call Holding – Holding the existing conversation (10 incoming calls

can be put on hold simultaneously.)

• Call Transfer – (Selective Transfer/Direct Transfer)

• Call Forwarding – Forwarding incoming calls

• Automatic Answering

• Emergency Calls

• 3-Party Conference

Display Panel • Touch-colored screen

• Caller ID

• Display of simultaneous incoming calls

• Date and Time Displayer

Easy to Use

• Programming via WEB

• Installing software, configuration and phonebook over Web/TFTP

• Recall user settings when machine is restarted

• Backuping and re-installing phonebook, configuration and key

programming files. Installing prepared phonebook.

Keys • 4 navigation keys

• Volume control keys

• Numeric keys

Special Function Keys

Contacts

Call Log

Message

Redial

Conference

Park

Transfer

Function

Language • Turkish / English

Dimensions • Dimensions: 228 x 217 x 147 mm

• Weight: 960 gr.

Temperature • 5-40°C

Humidity • 0-%80

NT42I Technical Reference and User Guide

SPECIFICATIONS OF NT42I

Codecs

G.711A

G.711U

G.723

G.726 16 Kbps

G.726 24 Kbps

G.726 32 Kbps

G.726 40 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

NAT transversal

-STUN - NAT

DTMF • In-Band

• Out-of-Band DTMF (RFC2833)

• SIP Info

Voice Quality • VAD – Voice Activaty Detection

• AGC – Automatic Gain Control

• AEC– Acoustic ECHO Canceller

• Jitter Buffer

Tones • Ring tones – 8 different ringtones

• Changeable and installable ringtones

• Warning tone on busy

Power • 5 VDC adaptor

Phone

Functions

• Message and Call displayer

• Remote SIP registration – Ability to register to 3 different registration

servers. (Sequentially registration or registration to selected

registration server)

• Recorded user settings

• Call Records (128 records are kept for each of Missed, incoming

and outgoing. Last 32 call records are kept for every extension.)

• Full duplex speaker

• 2 internal 10/100 Ethernet switch ports

• Speed Dial / 24 (with DSS module)

• Phonebook – 128 numbers

• Hour/Day/Week/Month/Year basis 8 different periodical alarm,

alarm message or name definitions.

Bluetooth • Fully Qualified Bluetooth system v2.0 + EDR, CE and FCC

• Integrated chip antenna

• Enhanced Data Rate (EDR) compliant with v2.0.E.2 of specification

for both 2Mbps and 3Mbps modulation modes

• Full Speed Bluetooth Operation with Full Piconet

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.

Thanks to NT42I IP Phone’s touch-colored screen is used easily and it is useful in terms of

visuality.

Internet output can be transmitted to computers with another ethernet port of NT42I.

PARTS LIST ON DELIVERY

- NT42I Telephone

- Telephone Handset

- Spiral cable of the handset,

- Ethernet Cable

- AC Power Adaptor

- Product Quality and Warranty Cards

- Technical Reference and User Guide CD

NT42I Telephone Handset

Ethernet Cable AC Power Adaptor Guide CD

NT42I Technical Reference and User Guide

GENERAL APPEARANCE

1 HF Speaker 5 Screen Adjustment Plug ** 9 Numerical Key Pad

2 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.

** Height of the screen must be adjusted with using this plug.

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. Touch screen can be destroyed in

humid situation.

NAVIGATION KEYS AND SPECIAL FUNCTION KEYS

“OK ” key : This key is for user to confirm the setting or activate the function that is

displayed on the screen.

“Navigation , , , ” keys: These keys help user to move at all menus and choose the

option which user wants.

“Contacts” key: It activates phonebook. It helps user to enter a new number, delete existing

number or reach existing numbers.

“Call Log” key: It activates Call Records Menu. It helps user to reach all call history.

“Menu” key: It helps user to enter or exit the menu that user can adjust all telephone

settings.

“Function” key: It is allocated for future needs. Any function can be assigned to this key as

other programmable keys.

“Message ” key: This key is used for reaching messages. User can understand whether

s/he has got an unlistened message or not.

“Redial” key: Dials again the last called number.

“Conference” key: This key is used for starting a conference while making an external or

internal call.

“Park” key: This key is used for parking the existing call.

“Transfer” key: This key is used for non-announced (without warning other extension who is

going to take the call) or transfer an existing call to an extension with announcement.

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.

However if the headphone control is inactive, this key will be used for starting a new call.

During a conversation or stand-by mode or calling mode, this key is used for starting a new

call.

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.

NT42I, which is connected to LAN, will not work because NT42I has not got an IP address by

default. All information about adjusting IP settings or registering an IP system is explained in

the related chapters of this guide. Please make programming after checking to those

chapters.

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

- Messages

- System Settings

- Settings

- Security Settings

- Alarm

- SIP Settings

- DSS Settings

- PBX Settings

An IP address should be assigned to NT42I

because of not having an IP address by default. This operation will be made from

Menu>Settings>Telephone Settings>Network Settings menu.

Enter “Settings” menu by using navigation keys.

After entering Settings menu with pressing “Select” key, enter “Telephone Settings” menu

again with “Select” key.

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.

To activate NT42I telephone set, firstly;

- IP Type

- IP Address

- Netmask

- Gateway definitions must be done.

There are two options for IP type:

Static IP: User can adjust IP address and Subnet Mask manually.

DHCP: DHCP server makes all necessary network adjustments automatically.

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“ to save these

addresses. Press “Back” to exit from menu. Before exiting from “Network Settings” menu,

“Save Changes” will be seen at the screen.

Press “Yes” to save the changes and a message will occur to inform user that the changes

are saved.

Other adjustments can be made easily by using special web interface for NT42I.

Adjusting other settings with using web interface will be told at the rest of user guide.

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.

Enter default password (123456) to the box which is shown above, and then press “OK”.

(Default entry password can be changed from System Settings > Http Password.

SYSTEM INFORMATION

System Information can be seen from this page.

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.

Entries about server or IP PBX are made from SIP Settings menu.

NT42I Technical Reference and User Guide

SIP SETTINGS

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Karel NT421 Technical Reference And User's Manual

Brand: Karel

Model: NT421

Type: Technical Reference And User's Manual

Key Features:

Intuitive touch-colored screen for easy navigation and visual appeal.
Dual Ethernet ports for connecting to both the phone and a computer, extending internet access.
Bluetooth connectivity for hands-free communication and device pairing.
Advanced call features: call forwarding, call transfer, three-party conferencing, and call holding.
Customizable phonebook with a capacity of 128 numbers for quick dialing.

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Karel NT421 Technical Reference And User's Manual

Karel NT421 Technical Reference And User's Manual

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