RTX RTX3741 Use and care manual

Proprietary and Confidential
RTX3741
DECT DONGLE
Product overview,
Features and operation
Technical Reference Document
© Jan-2020 RTX A/S, Denmark

Proprietary and Confidential
Trademarks
RTX and the combinations of its logo thereof are trademarks of RTX A/S, Denmark.
Other product names used in this publication are for identification purposes and maybe the trademarks of their
respective companies.
Disclaimer
The contents of this document are provided about RTX products. RTX makes no representations with respect to
completeness or accuracy of the contents of this publication and reserves the right to make changes to product
descriptions, usage, etc., at any time without notice. No license, whether express, implied, to any intellectual property
rights are granted by this publication
Confidentiality
This document should be regarded as confidential, unauthorized copying is not allowed
© Jan-2020 RTX A/S, Denmark, All rights reserved
http://www.rtx.dk

Proprietary and Confidential
Table of Contents
1About This Document .................................................................................................................................................4
1.1 Audience ...........................................................................................................................................................4
1.2 When Should I Read This Guide ........................................................................................................................4
1.3 Important Assumptions.....................................................................................................................................4
1.4 What’s Inside This Guide...................................................................................................................................4
1.5 What’s Not in This guide ................................................................................................................................... 4
1.6 References/Related Documentation.................................................................................................................5
1.7 Document History ............................................................................................................................................. 5
1.8 Documentation Feedback .................................................................................................................................5
2Product overview........................................................................................................................................................ 6
2.1 Package –Contents/Damage inspection...........................................................................................................6
2.2 RTX DECT Dongle Mechanics.............................................................................................................................7
2.3 LED Indicators....................................................................................................................................................7
2.4 LED Patterns ...................................................................................................................................................... 8
2.5 LED Indications.................................................................................................................................................. 8
2.6 Button features ................................................................................................................................................. 8
3Product features ......................................................................................................................................................... 8
3.1 Dongle features.................................................................................................................................................8
3.2 Main features....................................................................................................................................................9
3.3 Soft Client Support ..........................................................................................................................................10
4PC setup tool.............................................................................................................................................................10
5Use case scenarios....................................................................................................................................................11
5.1 DECT USB dongle on PC...................................................................................................................................11
5.2 DECT USB dongle on corded phone (FP) .........................................................................................................12
5.3 DECT USB dongle on corded phone (PP)......................................................................................................... 12
Appendix ........................................................................................................................................................................... 13

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1About This Document
This document describes the configuration, customization, management, operation, maintenance and troubleshooting
of the RTX3741 DECT Dongle. For customer specific modes, refer to specific customer agreements, which describe the
software operational deviations from this document.
1.1 Audience
Who should read this guide? First, this guide is intended for networking professionals responsible for designing and
implementing RTX based enterprise networks.
Second, network administrators and IT support personnel that need to install, configure, maintain, and monitor
elements in a “live” SME VoIP network will find this document helpful. Furthermore, anyone who wishes to gain
knowledge on fundamental features in the RTX DECT system, can also benefit from this material.
1.2 When Should I Read This Guide
Read this guide before you install the core network devices of VoIP SME System and when you are ready to setup or
configure the RTX724x DECT headsets or DECT Speakerphones.
This manual will enable you to set up components in your network to communicate with each other and deploy a fully
functionally system.
1.3 Important Assumptions
This document was written with the following assumptions in mind:
1) You understand network deployment in general
2) You have working knowledge of basic TCP/IP/SIP protocols, Network Address Translation, etc...
3) A proper site survey has been performed, and the administrator have access to these plans
1.4 What’s Inside This Guide
We summarize the contents of this document in the table below:
WHERE IS IT?
CONTENT
PURPOSE
CHAPTER 2
Product overview
Learn about the product
CHAPTER 3
Product features
Check the available features
CHAPTER 4
PC setup tool
Overview of a software configuration tool
CHAPTER 5
Use case scenarios
See an example setup
Appendix
General requirements
Read more about the regulatory and environmental
compliances
1.5 What’s Not in This guide
This guide provides overview material on network deployment, how-to procedures, and configuration examples that
will enable you to begin configuring your system.
It is not intended as a comprehensive reference to all detail and specific steps on how to configure other vendor
specific components/devices needed to make the SME VoIP System functional. For such a reference to vendor
specific devices, please contact the respective vendor for documentation.

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1.6 References/Related Documentation
RTX8663 SME VoIP System Guide_SIP_V4.8
How to Deploy SME VOIP System v1.4
PC setup tool
1.7 Document History
REVISION
AUTHOR
ISSUE DATE
COMMENTS
1.0
DKO
29.01.2020
First release
1.8 Documentation Feedback
We always strive to produce the best and we also value your comments and suggestions about our documentation. If
you have any comments about this guide, please enter them through the Feedback link on the RTX website. We will
use your feedback to improve the documentation.

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2Product overview
RTX3741 is a USB type A dongle with slide switch that can establish a wireless connection with the RTX headsets from
the RTX725x series and B169 DECT Speakerphone. The dongle supports dual mode, meaning that it can be used either
as a Fixed part (FP), or Portable part (PP).
-Base / FP mode:
oActs as a DECT base for the RTX725x headsets
oActs as a DECT base for the B169 DECT speakerphone
-Headset / PP part:
oEnables DECT access for a USB desktop phone on the RTX VoIP system
Since the DECT dongle can run one mode at a time, you can switch between the two functionalities by using the slider
switch.
The device is designed to be easy to use with a desk phone/PC/laptop with a very good sound quality. The chosen
microphone is balanced together with the headset filters to reduce the background noise, in order to provide an
ultimate speech intelligibility. The receivers are balanced to the receiver housing and cushion, allowing the headset to
provide the user extreme stereo experience. Since the device is using the DECT technology, it can remember 4
registrations –one primary and three secondary. However, only one single registration can be a DECT speakerphone.
The audio can be directed to the headset or speakerphone, depending on the user’s choice. When the headset is
connected via the RTX3741 DECT Dongle to a PC, the user may access calls from Soft Call Clients, such as Skype for
Business (see 3.2 Soft Client support for more details).
2.1 Package –Contents/Damage inspection
Before Package Is Opened
Please, examine the shipping package for evidence of physical damage or mishandling prior to opening. If there is a
proof of mishandling prior to opening, you must report it to the relevant support center of the regional representative
or operator.
Contents of Package
Please, make sure all relevant components are available in the package before proceeding to the next step.
Every shipped unit package/box contains a DECT dongle and a safety sheet.

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Damage Inspection
The following is the recommended procedure for you to use for inspection:
1. Examine all relevant components for damage.
2. Make a “defective on arrival – DOA” report or RMA to the operator. Do not move the shipping carton until
the operator has examined it. If possible, send pictures of the damage. The operator/regional representative
will initiate the necessary procedure to process this RMA. They will guide the network administrator on how
to return the damaged package if necessary.
3. If no damage is found, then unwrap all the components and dispose of empty package/carton(s) in
accordance with country specific environmental regulations.
2.2 RTX DECT Dongle Mechanics
With such small dimensions as 35mm (length) and 19mm (width), the device can be easily carried and plugged into
any computer, supporting a USB. For more details, please see the drawing below.
2.3 LED Indicators
The dongle has 3 LED indicators that signal different functional states of the device. The indicators are off when the
unit is not powered on. To give you a better understanding of the LED color and states, we have numbered them as
LED 1, LED 2 and LED 3.
Button side Connector side

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Depending on the LEDs color, they will indicate call and registration status to the user. Each LED has its own color
identification, which is presented in the table below.
LED
COLOR
1
RED
2
BLUE
3
GREEN
2.4 LED Patterns
The LED supports different kinds of patterns, such as fast/normal/slow blink and breathing. Technical details are
explained in the table below.
LED
COLOR
BLINKING
500ms ON, 500ms OFF
BREATHING
OFF-ON-OFF, 166 steps, 20ms per step
2.5 LED Indications
The table summarizes the various LED states. It shows the LED indication for different statuses of the DECT dongle.
FUNCTION
STATUS
LED
PATTERN
SYSTEM
Dongle reset started
Red, Blue and
Green
Blink 3 times
Registration, In progress
Blue
Blink alternately
DECT
Registration, Success
Blue and Green
Blink 3 times
CONNECTION
Registration, Failed
Blue and Red
Blink 3 times
Master headset registered
Blue
ON
Master headset lost link
Red
ON
Ringing
Green
Blink
CALL
Talk or Hold
Green
ON
Conference or intrusion call
Green
Breathing
2.6 Button features
The DECT dongle has one key which serves for starting the DECT registration and for resetting the device. Therefore,
all setup is done by using the PC Setup tool.
3Product features
The following chapter will introduce you to the features of the RTX3741. The two tables represent two separate
categories –dongle and main features. Each of the features are followed by a short description.
3.1 Dongle features
FEATURES
DESCRIPTION
LED INDICATOR
3x LED, see 2.3. LED indicators
HARDWARE FEATURES

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Button
Yes
Functionality
Registration and reset
Slider switch
Yes, switch between base and headset mode
Operating conditions
-0 ⁰C to 45⁰C
CALL FEATURES
Call waiting
Yes
Hold / Retrieve
Yes
No. of simultaneous calls
2, only 1 on hold
Call conference
Yes
Call swap
Yes
DECT
Output power
18dBm
Sensitivity
-92dBm
Antenna
2 for fast antenna diversity
Range
200m LOS
SOFTWARE UPDATE
Downloadable
Yes, using PC tool
3.2 Main features
MAIN FEATURES
RTX3741
COMPATIBLE WITH:
Headset RTX725x
Yes
B169 Speakerphone
Yes
CONFERENCE SUPPORT
Up to 4 users (headsets only)
RINGER BUILT-IN BASE
No
CUSTOMER LOGO
Silk screen
DONGLE COLOR OPTIONS
<TBD>
CALL INDICATION LED ON DONGLE
Yes
BATTERY CHARGE INDICATION ON
DONGLE
No
DECT CONNECTION STATUS LED ON
DONGLE
Yes
CONNECTION TO LAPTOP / PC
Yes, via USB
CONFIGURABLE VIA PC SETUP TOOL
Yes, via USB
FIRMWARE UPDATE SUPPORT
Yes, via PC Setup Tool
USB CONNECTOR
Type A
PC WINDOWS SUPPORT
Yes
MACOS SUPPORT
Yes
DECT AUDIO SUPPORT
Wideband Audio
CELT, G.722, BV32
Narrowband Audio
G.726, BV16
CALL CLIENT SUPPORT
Skype for business
Yes
ADEPTIVE POWER CONTROL (DECT)
Yes

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3.3 Soft Client Support
Combined with one of our four RTX headsets, the DET dongle supports the audio and USB API for the Skype for
Business (Lync) application. Moreover, other call clients can be supported, but they require either a PC tool to be
running (see chapter 4 PC setup tool), or an RTX USB HID API to be supported by the client.
All call related controls are managed via the headset controls and/or desk phone/PC. The call is initiated from the Soft
Call Client running on the PC/laptop. It cannot be initiated from the speakerphone. It is outside the scope of the
RTX3741 product.
4PC setup tool
An external PC configuration tool is available for the DECT headset/dongle/base. It allows you to configure these
devices by changing their parameters, upgrading their firmware and do upgrades of the PC tool itself. It is compatible
with corded and wireless headsets –RTX7xxx series. The PC Tool is available in a Windows version and a MacOS
version. An example of the GUI interface is shown in the screenshots below. For a more detailed guide of the PC setup
tool, please refer to the PC tool manual.

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5Use case scenarios
The following chapter aims to give you an example of a certain system setup in order to show the connection and
functionality of the device.
5.1 DECT USB dongle on PC
The following use case presents a DECT dongle connected to a laptop that acts like a base with Call control (e.g. Skype
for Business).
Use case details:
•All calls are originated from the Windows / MacOS PC using e.g. Skype for Business
•The DECT registration of the headset and the DECT speaker phone is done by putting both dongle and
headset in registration mode.
•The user selects the DECT headset or the DECT speaker phone on the Windows / MacOS PC. One active audio
device can be selected at a time. The active device is chosen via the PC Tool.
•The user can mute/un-mute headset either from PC (softphone) or from headset.
•No call controls are mapped from the speakerphone to the call application on the Windows / MacOS PC.
•The connected device is visible in the PC Tool
•The Windows / MacOS PC audio devices settings apply to the connected master devices.

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5.2 DECT USB dongle on corded phone (FP)
The following presents a use case where the DECT dongle is connected to a desk phone and acts as a base for the
DECT headsets/speakerphone. A Desktop phone support is required in order to select the audio device (headset or
DECT speaker phone). RTX will provide HID interface, however, the customer is responsible for the implementation of
relevant phones.
Use case details:
•All calls are originated from the desk phone (with USB DECT dongle). Call control to be provided by customer
for the desk phone. RTX provides the API.
•The DECT registration of the headset and the DECT speaker phone is done by setting both dongle and
headset in registration mode. Functionality can also be added to the desk phone by the customer.
•The user selects the DECT headset or the DECT speaker phone on the desk phone. One active audio device
can be selected at a time.
•The user can mute/un-mute headset from the headset.
•No call controls are mapped from the DECT speakerphone to the call application on the desk phone.
•The DECT dongle is configured using the Windows / MacOS PC audio.
5.3 DECT USB dongle on corded phone (PP)
This use case presents the DECT dongle acting as a headset when connected to a desk phone. As mentioned in the
previous chapter, a desktop phone support is required. The HID interface is provided by RTX, whereas the customer is
responsible for the implementation of the relevant phones.
Use case details:
•The user plugs-in the USB DECT dongle to the desk phone, and it is registered to the RTX VoIP network. The
functionality is added and controlled by the customer, whereas RTX provides the API for the configuration
•The DECT registration of the desk phone to the VoIP network is done as effortless as possible.
•The DECT dongle is configured using the Windows / MacOS PC tool.

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Appendix
General requirements
Requirements
Descriptions
DECT frequency bands:
1880 –1895 MHz (Taiwan)
1880 –1900 MHz (EMEA)
1910 –1920 MHz (Brazil & Uruguay)
1910 –1930 MHz (LATAM, Argentina, Chile)
1920 –1930 MHz (USA, Canada)
Narrowband Audio:
G726, BV16
Wideband Audio (HD):
G722, BV32
Music
CELT 128 kbit/s
DECT Registration
Possible to remember 4 registrations, one primary and three secondary
registrations.
Environmental Compliances
RoHS
Per Directive 2011/65/EU on the Restriction of the use of certain Hazardous Substances in Electrical and Electronic
Equipment
REACH
Per Directive 2006/121/EC on Registration, Evaluation and Authorization of Chemicals
WEEE
Per Directive 2012/19/EU on Waste Electrical and Electronic Equipment
(RTX will add waste bin information on product labels).
Packaging: EU Directive 97/129/EC establishing the identification system for packaging materials pursuant to
European Parliament and Council Directive 94/62/EC on packaging and packaging waste.

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Regulatory compliances
Approval
Standard
General –Safety
Safety
CB Test Report IEC62368, EN62368, IEC60950, EN60950
with the national difference
Safety
UL62368 and cUL 62368
Safety
CB Scheme Certificate
US
FCC
FCC Part 15B
FCC
FCC Part 15D
FCC
FCC Part 15.247
FCC
FCC SAR evaluation
FCC
FCC ID
Canada
IC
ICES-003 Issue 6, 2016
IC
IC RSS-213 Issue 3,March 2015
IC
IC RSS-102 issue 5 SAR evaluation
IC
IC REL Cert and registration
IC
ISED ID
European
CE
EN55032:2015 EMC-EMI&EMS
EN55024:2010
EN55035
CE
EN62479:2010
CE
EN301489-1 V2.2.0 (2017-03)
EN301489-6 V2.2.0 (2017-03)
CE
IEC61000-4-2 Level 3 criteria B (Contact+/-8KV,Air +/-15K)
EN61000- 4-3 Level 3 criteria A
CE
EN301406V2.2.2(2016-09)
CE
SAR-EN62209-1:2006/EN62209-2:2010 ;
EN50360 :2001+A1:2012 EN 50566:2013/AC:2014
CE
AOC certificate
Australia/NZ
RCM
AS/NZS CISPR 32:2015
RCM
EMC-AS/NZS CISPR 22:2009+A1:2010
RCM
RF-AS/NZS 4268:2017
RCM
SAR-AS/NZS 2772.1; AS/NZS 2772.2:2011
RCM
Acoustic AS/CA S004
RCM
HAC AS/ACIF S040

FCC Caution.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates
uses and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or
more of the following measures:
-Reorient or relocate the receiving antenna.
-Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help.
IC Warning
This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject
to the following two conditions:
(1) This device may not cause interference, and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en compromettre le fonctionnement.

RF Exposure Information and Statement
The SAR limit of USA is 1.6 W/kg averaged over one gram of tissue. Device types: USB DECT
Dongle (IC: 4979B-U3741) has also been tested against this SAR limit. The highest SAR value
reported under this standard during product certification for properly worn on the body is
0.082W/kg. This device was tested for typical body-worn operations kept 5mm from the body. To
maintain compliance with IC RF exposure requirements, use accessories that maintain a 5mm
separation distance. The use of accessories that do not satisfy these requirements may not
comply with IC RF exposure requirements, and should be avoided.
Body-worn Operation
This device was tested for typical body-worn operations. To comply with RF exposure
requirements, a minimum separation distance of 5mm must be maintained, including the
antenna. Accessories used by this device should not contain any metallic components.
Body-worn accessories that do not meet these requirements may not comply with RF exposure
requirements and should be avoided. Use only the supplied or an approved antenna.
RF exposition Information et Déclaration
La limite SAR des Etats-Unis est de 1,6 W / kg en moyenne par gramme de tissu. Types d'appareil:
Clé USB DECT (IC: 4979B-U3741) a également été testé contre ces valeurs. La valeur SAR la plus
élevée déclarée en vertu de cette norme lors de la certification de produit pour lorsqu'il est
correctement porté sur le corps est 0.082W / kg. Ce dispositif a été testé pour les opérations
typiques portés sur le corps avec 5mm du corps. Afin de maintenir la conformité aux exigences de
la IC, utilisez des accessoires qui maintiennent une distance de séparation 5mm. L'utilisation de
pinces de ceinture, étuis et accessoires similaires ne doivent pas contenir de composants
métalliques dans son ensemble. L'utilisation d'accessoires qui ne satisfont pas à ces exigences ne
peuvent pas se conformer aux exigences de la IC, et devrait être évitée.
Porté au corps Opération
Ce dispositif a été testé pour les opérations typiques portés sur le corps. Pour se conformer aux
exigences d'exposition aux radiofréquences, une distance de séparation minimale de 5mm doit
être maintenue. Les accessoires utilisés par cet appareil ne doivent contenir aucun composant m
étallique. Les accessoires portés sur le corps qui ne répondent pas àces exigences peuvent ne
pas être conformes aux exigences d'exposition aux RF et doivent être évités. Utilisez
uniquement l'antenne fournie ou approuvée.
The device has been evaluated to meet general RF exposure requirement. The device can be used
in portable exposure condition without restriction.