HANDSET
Contents
1. HANDSET TECHNICAL OVERVIEW TIPRO D OPTIONS D 2 Figure D 1 USB Handset Module with Integrated Dial Pad TM HUx 5KW MECHANICAL KEYS keyswitch gt model Cherry ML gt key travel 2 5mm to 3 0mm total gt actuating force 45 20 gt reliability Mean Cycles To Failure MCTF 1 billion 10 press release cycles 20 million is guaranteed minimum keycaps gt construction separate body and cover size single gt keycap bodies CN15 black colour key legends printed on the keycap bodies gt keycap covers transparent user customizable key legends pictograms to be printed on a thin paper and put underneath the keycap covers HANDSET TECHNICAL OVERVIEW id D OPTIONS D 3 D 3 Analogue Interface The TM HHA 6AW is an analogue derivative of the handset module It lacks audio processing circuitry both analogue and digital providing a direct connection to the loudspeaker and the microphone via RJ4P 4C jack socket The connector is placed in the cradle instead of the USB Type B connector refer to Figure B 2 The handset cord is 6 wire spiral unshielded cable The external audio cable is a 4 wire unshielded straight through cable 2 5m long TM CH1 The loudspeaker is connected between pins 2 and 3 electrically floating no ground connection The microphone is also floating between pins 4 positive and 1 negative LOUDSPEAKER type dynamic impedance 150 Q 12. Analog e Interface eec a eiaa is D 3 E ORDERING CODES cicada E nde oases aan E 1 qe Lu F 1 CN NOTICES m G 1 CUIR m DO ENT G 1 G 2 Copyright SNCS C eae cm G 1 HANDSET TECHNICAL OVERVIEW TIPRO GENERAL INFORMATION A 1 A GENERAL INFORMATION The Handset module is a member of the modular FREE FREE BeFREE also referred to as FREE product family It is a USB audio device for digital bidirectional voice communication which can be combined with other family members into multifunctional consoles for various applications Integrated PushToTalk PustToMute key and Hook switch operate as USB programmable keys i e emulating user definable input from a standard computer keyboard what enables seamless integration of these features into existing application software without any intervention in the code Two RGB LEDs within the cradle visually indicate the status of the switches Talk Mute and On Hook Off Hook Once configured using ChangeMe programming utility the module does not require any proprietary software to operate but rather generic USB HID keyboard for PTT key and Hook switch and USB audio for voice drivers of the operating system in use As all other FREE add on modules the handset module requires a Tipro USB controller to operate The controller is normally integrated into another module e g a touchco
3. CAL OVERVIEW TIPRO INTEGRAL PARTS AND FUNCTIONALITY B 1 B INTEGRAL PARTS AND FUNCTIONALITY Two major parts a handset and a cradle constitute the module The handset is connected to the cradle by a handset cord LED Indicators Loudspeaker Hook Switch PushToTalk Mute Key Wall Mount Tooth Microphone Cradle Base Handset Cord Figure 1 USB Handset Module Integral Parts B 1 Handset The handset itself is a combination of a dynamic loudspeaker an electret microphone and a PushToTalk Mute key It is connected to the cradle by a spiral shielded cable that improves immunity to external electromagnetic fields The cable also referred to as handset cord is detachable at the cradle side see Figure B 2 B 2 Cradle Base The cradle contains an electronic board with a hook switch analogue conditioning circuitry a USB audio Codec LED indicators and a microcontroller The USB audio Codec converts analogue signals into a digital USB data stream and vice versa while the microcontroller supervises the operation and enables modularity programmability via Tipro bus The hook switch is a reed contact activated by a magnet inside the handset HANDSET TECHNICAL OVERVIEW id INTEGRAL PARTS AND FUNCTIONALITY B 2 B 2 1 Microphone Amplifier The microphone amplifier is a logarithmic audio amplifier with programmable gain noise gate threshold and compression ratio The noise gating feature enables a
4. DSET TECHNICAL OVERVIEW TIPRO GENERAL INFORMATION A 3 gt USB connector USB type B gt Handset connector RJ 6P 6C MECHANICAL casing plastic ABS black C15 colour with matte black C25 top part net dimensions 70 x 222 x 66 W D H mm gross dimensions with side covers 90 x 222 x 66 W D H mm weight 400 g approximately protection sealing grade IP 40 according to EN 60529 ENVIRONMENTAL operating ambient temperature range 0 C to 40 C storage ambient temperature range 10 C to 50 C relative humidity range 2090 to 8096 non condensing AUDIO Analogue front end gt designed to meet wide band IP telephony standards gt frequency pass band 100 Hz 8 KHz USB Audio Codec model Texas Instruments PCM 2912x USB Interface full speed USB 2 0 compliant certified by USB IF resolution 16 bit Delta Sigma ADC and DAC sampling rates ADC amp DAC 8 11 025 16 22 05 32 44 1 48 kHz MECHANICAL KEYS AND REED SWITCHES PTT PTM key two keyswitches in parallel model Cherry ML key travel 2 5mm to 3 0mm total gt actuating force 45 20 gt reliability Mean Cycles To Failure 1 billion 10 press release cycles 20 million is guaranteed minimum Hook switch reed switch gt reliability Mean Cycles To Failure MCTF 500 million 5x108 switching cycles 20 million is guaranteed minimum HANDSET TECHNI
5. HANDSET FREE FREE BeFREE Handset Module TECHNICAL OVERVIEW Description and Application Handset_TO_8_1 doc Version 8 1 December 15 2014 RO 5 TABLE OF CONTENTS A GENERAL INFORMATION SEQUI 1 AN HHU ET T A 1 A 2 Technical assente 2 B INTEGRAL PARTS AND FUNCTIONALITY B 1 NN IM B 1 B2 Cradle BaSe pem B 1 2 1 Microphone EE B 2 2 2 Loudspeaker 2 B3 USB SO ue cers aries tna i D ptus acdsee turtle tuis usitate en deque B 2 IE ET Nic T B 2 B 3 Differences between Stand Alone and Add On B 3 C OPERA TION M ees C 1 l1 Con gupbP Handset rui etu dide EEE OIE C 1 2 Operating Modes T C 1 C 3 Using Tipro USB Audio MUR nea ptu C 1 D OPTIONS ceenuute aeui md duet Maine tta dba ER EMI D 1 LT HID Telephony Int rfac Chin EP MUSEUM D 1 13 2 Inte erated Dial P d ercsi iaeiei ieran ar ERE ESEE E eran D 1 D 3
6. VIEW id INTEGRAL PARTS AND FUNCTIONALITY B 4 an Handset BeFREE 15 Handset TM HUA BF15 TM HUM Tipro Bus Module Tipro Bus ELO USB Touchscreen Controller MainBoard USB 4 Generic USB Generic BA i Pees USB Hub Root Hub Audio Hub Device Device USB Cable USB Cable Figure Add On and Stand Alone Handset Modules HANDSET TECHNICAL OVERVIEW OPERATION C 1 C OPERATION C 1 Configuring Handset The Handset is a relatively complex device with a number of programmable settings parameters provided for users to configure in accordance to the particular application To enable this feature Tipro supplies the respective programming utility ChangeMe which operates only under Windows operating systems It assists users to define own set of parameters save them into a file for possible replication in the future and program into non volatile memory of the device The USB Handset module implements a standard USB audio Codec Therefore no device specific driver is needed for the module to operate under Windows operating systems However it may or may not be the case with other operating systems such as Linux where it depends on the actual distribution kernel version etc C 2 Operating Modes Off Line is the default mode where the operation is controlled from within the module applying the parameters settings previously defined by ChangeMe programming utility In the On Line operating m
7. is document and reserves the right to make changes to specifications and product descriptions at any time without notice G 2 Copyright Notice 2004 2014 Tipro All rights reserved Trademarks and registered trademarks are the property of their respective owners HANDSET TECHNICAL OVERVIEW TIPRO
8. kHz 1 V Sound Pressure Level SPL 93dB 3 dB 1 kHz with IEC318 coupler 60 mV frequency range 200 Hz 7 kHz 9 9 rated power 10 mW MICROPHONE type electret condenser omni directional impedance 2 2 max KHz sensitivity 36dB 3dB OdB 1 1 kHz frequency range 100 Hz 7 kHz 9 9 operating voltage 1 0 5 0 other non audio functions are the same as of the TM HUA 5AW The module TM HHA 6AW is intended for direct connection to the Speakerbox module see Reference 3 as well as to a third party analogue audio processing hardware HANDSET TECHNICAL OVERVIEW TIPRO ORDERING CODES E 1 E ORDERING CODES 1 2 3 4 5 6 7 8 TM HUA 5 A W 15 25 xxx 1 Module Type H Handset module 2 Audio Interface U USB T USB with HID Telephony Device 3 Configuration A Standard FREE add on module M Stand alone FREE module with Tipro USB controller 4 Handset Cord 5 5 wire shielded cable 5 PTT PTM and Hook Operation A Programmable keys K Programmable keys with integrated Dial Pad 6 Position of the Wall Mount Tooth W sticking out Wall mount ready default none hidden 7 Housing Colour C15 C25 black C15 with black matte C25 top part see Note 2 below 8 Custom Version Three digit number reserved for product customizations It is omitted in case of standard versi
9. ker amplifier gain programmable PushToTalk PushToMute key also referred to as switch programmable magnetic Hook switch also referred to as key two RGB LEDs indicating status Talk Mute and On Hook Off Hook various operating modes gt 5 different colours Red Green Blue Orange Violet programmable Dial Pad keys TM Hxx 5KW only VERSATILITY user configurable predefined operating mode Off Line dynamically controlled operation by the application software On Line keys with dedicated hardware function and or programmable keys LED indicators with dedicated hardware function and or programmable indicators 2 Technical Characteristics ELECTRICAL 9 9 9 9 9 9 power supply audio circuitry 5V 596 from USB power supply control circuitry 5V 590 from Tipro controller via Tipro bus current consumption audio circuitry 85 100 mAmax current consumption control circuitry 35 55 mAmax additional consumption of TM HUM amp 25 mArvP 45 mAmax audio interface USB except for TM HHA 6AW see Chapter D 3 control interface TM HxA TIPRO bus control interface TM HxM 5xW USB interface connectors gt left hand side Tipro bus connector 6 pin Micro MaTch header male at the end of a 100 mm long ribbon cable gt right hand side Tipro bus connector 6 pin Micro MaTch receptacle female on the PCB HAN
10. ll operating systems are capable of accepting standard USB keyboard input and nearly every application software expect the operator to use it this concept typically enables Tipro Modular Dispatcher Terminals to be integrated into the existing software environment without any intervention in the code However certain software applications are designed to enquire on the status of the keys rather than capturing the respective keyboard events In such cases the HID Telephony Interface is applicable It is supported by the special Handset variants TM HTXx that send status reports only when specifically addressed to what is different to HID Keyboard devices that report automatically to the respective driver whenever a change in status occurs TM HTx Handsets represent supersets of the standard TM HUXx counterparts being capable to emulate HID Telephony and HID Keyboard device concurrently Handset variants with HID Telephony support TM HTXx as well as the variants with integrated Tipro controller TM HxM comprise a bus powered USB hub and therefore have to be connected to the root hub of the host computer e g BeFREE 15 D 2 Integrated Dial Pad The USB handset either as a module TM HUA 5KW or the module with integrated Tipro USB controller TM HUM 5KW can optionally incorporate the Dial Pad with 12 mechanical keys to provide for more ergonomic dialling The keys are programmable in the same way as the PTT key and the Hook switch
11. mbient noise to be suppressed All sounds below the threshold are removed inside the amplifier so with a higher threshold the microphone needs to be used closer to the mouth and speech needs to be louder to get through the amplifier The compression feature enables compression of the output signal dynamics in order to minimize the difference between soft low and loud speech The amplifier is also capable of limiting extremely loud speech thus preventing distortion and popping The overall gain can be even lower than one i e attenuation as well as equal to zero i e totally muted input The output of the amplifier connects to the Analogue to Digital Converter ADC inside the USB Codec chip B 2 2 Loudspeaker Amplifier The loudspeaker amplifier is a linear audio amplifier with differential output programmable gain and limiting circuitry to prevent an acoustic shock It drives the loudspeaker inside the handset with a signal which is a composition of the output signal USB audio data stream received from the computer and converted by Digital to Analogue Converter inside the USB Codec chip and a part of the microphone signal so called side tone The left and right channel of the Codec s stereo output and internally summed prior to the amplification B 2 3 USB Audio Codec The audio Codec with USB interface is the Texas Instruments PCM2912x integrated circuit refer to respective data sheet for details B 2 4 USB Interface A
12. mputer a touchmonitor or a Speakerbox module within the same modular configuration Alternatively for a stand alone application a special variant of the module with integrated controller TM HxM is also available see Chapter B 3 Highlights APPLICATIONS dispatcher terminals banking amp trading consoles multifunctional control panels digital telephony e g Voice over IP devices CONCEPT AND MODULARITY handset with integrated PushToTalk Mute key and Hook switch combination of a USB audio device and an HID keyboard plug amp play operation with generic USB audio and USB HID keyboard drivers optional emulation of HID Telephony device side tone generated internally by the hardware software adjustable volume loudspeaker and microphone and side tone level 9 9 9 9 integrated acoustic shock protection circuitry HANDSET TECHNICAL OVERVIEW TIPRO GENERAL INFORMATION A 2 combinable with other FREE add on modules e g Speakerbox touchcomputers touchmonitors keypads into multifunctional terminals stand alone operation as a FREE module with integrated Tipro USB controller optional Dial Pad in the cradle for ergonomic dialling optional analogue interface direct connection to the loudspeaker and microphone PROGRAMMABILITY configurable properties of microphone amplifier gain noise gate threshold and compression ratio and the loudspea
13. ode the host computer controls the complete operation of the module This mode is intended for advanced users having control over the application software design The respective Windows API HID API is available as well as the associated technical documentation C 3 Using Tipro USB Audio Modules Besides the USB Handset Tipro also offers other USB audio modules e g Speakerbox Touchmonitor with integrated loudspeakers that can be joined into a single FREE configuration On the other side Windows operating systems present each of them as a USB Audio Device In order to enable independent addressing and differentiation each type of FREE audio module Handset Speakerbox Touchmonitor has a different USB product ID However Tipro can not guarantee that the actual Product ID of the USB Handset module or any other individual FREE USB audio module will not change in future as it depends on the USB Codec IC vendor s who reserve the right to change it HANDSET TECHNICAL OVERVIEW TIPRO D OPTIONS D 1 D OPTIONS D 1 HID Telephony Interface The actual status of the Hook switch inside the cradle and PushToTalk PushToMute PTT key button is normally reported to the host computer as a programmable sequence of keystrokes generated by a standard USB keyboard this way emulating a generic HID Keyboard Device An example of the application can be found in the Reference 10 Hook and PTT in Software Since nearly a
14. on Note 1 USB interface cable is considered to be an integral part of the module and shall not be ordered separately Note 2 The upper part of the handset housing is protected with a special coating in order to improve its abrasion resistance The coating modifies the shade of the original black C15 colour what is referred to as C25 colour HANDSET TECHNICAL OVERVIEW TIPRO REFERENCES F 1 F REFERENCES 1 10 Technical Overview 2 BeFREE 15 Technical Overview 3 SPEAKERBOX Technical Overview 4 POWERED FREE 15 Technical Overview 5 ChangeMe User s Manual 6 HID API Reference Manual 7 Modularity Demystified Dispatching Hints amp Tips White Paper Issue No 001 8 2 Handsets in Terminal Dispatching Hints amp Tips White Paper Issue No 002 9 3 Handsets in 1 Terminal Dispatching Hints amp Tips White Paper Issue No 003 10 Hook amp PTT in Software Dispatching Hints amp Tips White Paper Issue No 004 11 HID Telephony Interface Dispatching Hints amp Tips White Paper Issue No 005 HANDSET TECHNICAL OVERVIEW TIPRO NOTICES G 1 G NOTICES G 1 Disclaimer Information furnished by Tipro is believed to be accurate and reliable However Tipro makes no representations or warranties regarding the accuracy or completeness of the contents of th
15. udio interface of the module is full speed USB compliant to the USB 2 0 specification It is accessible from the bottom of the cradle see Figure B 2 at the USB upstream type B connector to be connected to a USB downstream port of the Tipro USB controller inside some other typically a touchcomputer or a touchmonitor module within the same FREE configuration HANDSET TECHNICAL OVERVIEW TIPRO INTEGRAL PARTS AND FUNCTIONALITY B 3 Handset Connector RJ 6P 6C USB Connector Type B Figure 2 USB Handset Module External Connections In case of Stand Alone handsets i e TM HxM 5AW or handsets with HID Telephony Interface i e TM HTx 5AW the USB is also the control interface and must be connected to a self powered or a root hub because the integrated Tipro USB controller itself comprises a bus powered USB hub B 3 Differences between Stand Alone and Add On Versions The TM HUM 5AW is a stand alone version and a functional superset of the TM HUA 5AW Add On version of the module It additionally incorporates a Tipro USB controller with built in bus powered hub one downstream port is occupied by the Tipro controller another one with the USB Audio Codec Figure B 3 presents a block diagram of the Stand Alone Handset as well as a block diagram of the Add On Handset in a representative Terminal Console configuration i e a configuration comprising a touchcomputer module HANDSET TECHNICAL OVER
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