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DHY-03 User Handbook

21

Yemen

77

400Hz *

Continuous

1+3+4+7

Nortel PABX

114 421Hz

Cadence 250ms On/250ms Off

2+5+6+7

Maple Audio

115

Line Reversal

1+2+5+6+7

ELMEG ICT-88 PABX 116 421Hz

Cadence

200ms On

3+5+6+7

400ms Off

PHILIPS SOPHO PABX 117 425Hz

Cadence

250ms On

1+3+5+6+7

250ms Off

Broadcast Bionics

118 N/A

Always On

2+3+5+6+7

Always Connected

Broadcast Bionics

119 400Hz

Cadence

375ms On

1+2+3+5+6+7

PhoneBox - Avaya

375ms Off

User Set 1

121 400Hz *

Continuous

Default values

1+4+5+6+7

as ETSI

User Set 2

122 Set via

Set via

Default values

2+4+5+6+7

Serial Port Serial Port

as ETSI

User Set 3

123 Set via

Set via

Default values 1+2+4+5+6+7

Serial Port

as ETSI

User Set 4

124 Set via

Set via

Default values

3+4+5+6+7

Serial Port Serial Port

as ETSI

User Set 5

125 Set via

Set via

Default values 1+3+4+5+6+7

Serial Port

as ETSI

User Set 6

126 Set via

Set via

Default

2+3+4+5+6+7

Serial Port Serial Port

values as ETSI

Table 2-1 : Supported Disconnect Tone Details by Country.

(* - Provisional Disconnect Tone Setting Uses TBR21 default of 400Hz Continuous)

The Nortel, ELMEG and PHILIPS settings are for PABXs used in the Netherlands which have
non-standard disconnect tones.
The unit can be programmed with other settings, so please contact us if you need the
settings for a different country to be implemented. In this case, it would be necessary to
have a technical specification of the line conditions, an audio recording or a specification of
the disconnect tone parameters (tone, line reversal or K-break).

Hybrid Technical Description

The hybrid has to be very flexible to maintain its operation for the many different countries’
telephony systems. There are 3 main parts to consider: - the electrical interface; the
impedance presented by the central exchange; and the actual echo cancellation techniques
and algorithms. The country code presets will use a theoretical optimum set of values for
the various internal parameters of the unit. However in practice in may be necessary to tune
some of the parameters (described in Chapter 3) to achieve the best possible results.

Electrical Interface

The telephone system is essentially similar from country to country, but there are small
yet significant changes around the globe: e.g. max signal levels, line current limits, ringing
conditions etc. These values are preset by the country code selection and can be adjusted
via the serial port parameters.

CONFIGURATION & CONTROLS

Country

Code Disconnect

Disconnect Details

Dipswitches

Tone

Type

set on

Frequencies

power up

C

ONFIGUR

A

TION & C

ONTR

OLS

2

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Содержание DHY-03

Страница 1: ...Digital Telephone Hybrid User Handbook ...

Страница 2: ...out notice and does not represent a commitment on the part of the vendor Sonifex Ltd shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual No part of this manual may be reproduced or transmitted in any form or by any means electronic or mechanical including photocopying recording information storage and retrieval systems for...

Страница 3: ...Model DHY 03T Twin automatic digital TBU 3 Model DHY 03EC Eurocard automatic digital TBU 3 Connecting the DHY 03 TBU 4 Using the DHY 03 5 First Use 5 Using the DHY 03 with the Broadcast Bionics PhoneBox 5 Using the DHY 03 with Internal Telephone Exchanges 5 Receiving a Call 6 Integrated Ringing Detector Auto Answer 6 Making a Call 6 Call Established 7 Level Setting 7 DTMF Detection 7 Integrated Di...

Страница 4: ... OFF 17 Network Cancellation Enable SW7 ON 17 Country Set on Power Up SW8 OFF 17 Momentary Latching Function SW9 OFF 18 Debug Function SW10 OFF 18 Remotes 18 RS232 Serial Port 18 Jumper and Select Switcher Functions 18 Country Code Selection 19 Hybrid Technical Description 21 Electrical Interface 21 Impedance Matching 22 Echo Cancellation 22 Calibration of DHY 03 Hybrid 22 Calibration of Telephone...

Страница 5: ...face Register 59 parameters 37 62 87 112 137 162 187 32 Telephone Interface Adaptation Differential parameters 43 68 93 118 143 168 193 33 Telephone Interface Adaptation Response parameters 44 69 94 119 144 169 194 33 Miscellaneous Register parameters 45 70 95 120 145 170 195 33 Disconnect Tones parameters 200 208 216 224 232 240 34 Cadence Pattern 1 parameters 201 209 217 225 233 241 34 Success T...

Страница 6: ...r Select Parameter Values 28 Table 3 2 Disconnect Type Parameter Values 29 Table 3 3 Telephone Interface Register 16 29 Table 3 4 Telephone Interface Register 17 29 Table 3 5 Telephone Interface Register 18 30 Table 3 6 Telephone Interface Register 22 30 Table 3 7 Telephone Interface Register 23 30 Table 3 8 Telephone Interface Register 23 RTO Values 30 Table 3 9 Telephone Interface Register 23 RC...

Страница 7: ...at the Purchaser s expense iv any Goods or parts of Goods replaced shall become the property of the Company v no work whatsoever other than normal and proper maintenance has been carried out to the Goods or any part of the Goods without the Company s prior written consent vi the defect has not arisen from a design made furnished or specified by the Purchaser vii the Goods have been assembled or in...

Страница 8: ...ompany accepts no liability in respect of its accuracy beyond that set out in Condition a f Subject to Condition e no representation condition warranty or other term express or implied by statute or otherwise is given by the Company that the Goods are of any particular quality or standard or will enable the Purchaser to attain any particular performance or result or will be suitable for any partic...

Страница 9: ...HY 03 is shipped in protective packaging and should be inspected for damage before use Where an item is found to have transit damage notify the carrier immediately with all the relevant details of the shipment Packing materials should be kept for inspection and also for if the product needs to be returned Returning the Warranty Card In order to register the date of purchase so that we can keep you...

Страница 10: ...d the connection to the telecommunications network should be removed before disconnecting the earth Disconnection of this earth connection may render the equipment unsafe with a consequential possible electrical shock hazard from exposed metallic parts Warning The barriered ports LINE and HANDSET must not be connected directly or indirectly to the un barriered ports MIC LINE INPUT OUTPUT CONFERENC...

Страница 11: ...heck that the machine has the correct operating voltage for your mains power supply Important Note The terminal marked on the rear panel must be earthed Opening the DHY 03 If you need to get inside the unit to make configuration adjustments simply remove the 4 screws in the corners of the rear panel The rear panel and main PCB will slide backwards out of the metal chassis Warning The power must be...

Страница 12: ... pin to IEC lead Table C Mains Lead Table E g order DHY 03S UK for a UK IEC lead to be supplied Installation Information Atmosphere The units should be installed in an area that is not subject to excessive temperature variation 0 C 50 C moisture dust or vibration Electromagnetic Radiation The cover is connected to earth by means of the fixing screws It is essential to maintain this earth ground co...

Страница 13: ...ium hexavalent chromium and halide containing compounds PBB polybrominated biphenyl and PBDE polybrominated diphenyl ether Elimination of these substances will result in more environmentally friendly recycling of electronic equipment For the products which Sonifex manufacture the main area where products were affected was in the use of lead for manufacturing and assembling electronics circuit boar...

Страница 14: ... Road Position Irthlingborough Company Northants Address NN9 5QE UK Tel 44 0 1933 650 700 Tel Fax 44 0 1933 650 726 Fax Email technical support sonifex co uk Email For the Serial No of your machine see the back panel of the DHY 03 unit DHY 03 Serial No Please describe the error in as much detail as possible for example what you were doing when the problem occurred what actually happened etc Descri...

Страница 15: ...hat a single telco channel on a mixing desk can receive 2 calls unavailable on DHY 03EC Integrated ring detector automatic call answering after a pre determined number of rings Automatic call disconnection Fitted with K break line polarity reversal and dial tone disconnect detection defined by the country selection Automatic ducking facility allows the talent to shout down or talk over a caller by...

Страница 16: ... audio equipment and the public telephone network They provide protection for your equipment and the public telephone lines allowing for varying line signals and line conditions Automatically cancelling out the unwanted signal they also facilitate two way communication down a single telephone line converting the two wire telephone signal to a four wire send and return signal to be linked to a stud...

Страница 17: ...HY 03 Front Rear Model DHY 03S Automatic digital TBU Figure 1 2 DHY 03S Front Rear Model DHY 03T Twin automatic digital TBU Figure 1 3 DHY 03T Front Rear I NT RO D U C T I O N INTRODUCTION 1 Model DHY 03EC Eurocard automatic digital TBU Figure 1 4 DHY 03EC View From Above ...

Страница 18: ...he mic line input select switch set to line A clean feed is a signal produced by a telco module on a mixer which is used as the output to be fed back to a caller on a telephone line The cleanfeed is a sum of all the other signals which constitute the programme output except for the caller s audio this is so that the caller doesn t hear him herself in the ear piece A cleanfeed signal will generally...

Страница 19: ...at the screw terminal must be connected to a technical earth to ensure the safe operation of the equipment under all line conditions Using the DHY 03 First Use Before using the DHY 03 you should ensure that it is connected as figure 1 5 and that the unit is setup for the correct line conditions 1 With the unit powered off set the dipswitches of the SETTINGS on the rear panel to the appropriate cou...

Страница 20: ...ure be used when the ringing detector is enabled Note The remote lamp tally mimics the front panel line connect button lamp i e it flashes when ringing and is on when the line is held The hybrid unit will now behave as a 4 wire to 2 wire converter with signal inputs at the mic line input connector and telephone signal output at the output connector The call may be cleared by re pressing the line c...

Страница 21: ...unction with auto answer to force external actions from the DHY 03 Once again in the case of journalists ringing in a report they can press a key on the telephone keypad to switch on an external recorder The key used is set by parameter 2 see Parameter Numbers Function and Value The presence of the DTMF tones in the incoming signal for the chosen key will activate the output on the remote connecto...

Страница 22: ...tively It is available as an accessory DHY 03CONF Using the Conference Port as a Record Output If you are not using the conference port it can be used to provide a balanced audio output from the Conference Output Phase and Non Phase pins This output will contain just the caller signal unless JP3 is fitted see Figure 2 5 which will create a mix of caller and sender on the record output Figure 1 6 A...

Страница 23: ... clockwise give gains of 6dB 0dB 6dB The normal position for the transmit gain to the telephone line lower switch is 0db and for the receive gain from telephone line upper switch is 6dB LED Bargraphs These 8 position bargraphs by default indicate the signal levels of the incoming audio signal lower and outgoing audio upper For best operation set the signal gain switches to achieve all 3 yellow LED...

Страница 24: ...able 3 LEDs and the Table 4 LEDs currently being used If there is a fault during power up the first and last LEDs on the bottom row will alternately flash and the top row will show LED1 left most LED indicates UART initialisation fault LED2 indicates Codec initialisation fault LED1 2 indicates Silab chipset initialisation fault LED3 indicates Silab front end failure LED1 3 indicates Silab telephon...

Страница 25: ...r to adjust the gain between 70dB and 52dB The gain range can be extended by 6dB by using the front panel transmit gain switch Mic Line Input Select Switch This push button switch sets the input signal mode Switch depressed in Mic input mode selected Switch not depressed out Line input mode selected Configuration Settings Switches The SETTINGS switches are used to configure the DHY 03 in the modes...

Страница 26: ...sal and K break work by changing the voltage on the line and have parameters settings which indicate a duration range for which this voltage change must be present Tone detection has a more complicated and extensive parameter set A variety of single or dual tones with level control are available together with the ability to handle cadence patterns where known countries disconnect requirements are ...

Страница 27: ...wer up the switches should be returned to their normal position otherwise the unit may fail to work correctly The country code can also be changed via the serial port but in either case when the country setting is altered any calibration parameters are discarded as they will most likely now be incorrect These parameters include tuned hybrid impedance settings coefficients and default cancellation ...

Страница 28: ...hed off at the supply or the power lead must be disconnected before attempting to open the unit Removal of the cover can expose dangerous voltages Warning The telephone line plug should be disconnected from the telecommunications network exchange line before removing the cover There are 3 jumpers on the main board JP1 is used to switch an extra 10dB of audio input gain to allow for use of domestic...

Страница 29: ... jumper 1 2 off and 3 jumper 2 3 that give gains of 6dB 0dB 6dB respectively The normal position for the transmit gain to the telephone line J3 off is 0db and for the receive gain from telephone line J4 1 2 is 6dB Tricolour LED Level Indicators These Tricolour LEDs indicate the signal level of the incoming audio signal left and level received from line right For best operation set the signal gain ...

Страница 30: ...ount the Tx Rx flashes and the country code is the sum of Tx multiplied by 16 plus Rx see Table 2 1 If there is a fault during power up the Tx Red Rx Red LEDs will flash alternately Once initialisation is complete the LEDs show the level info as above Reset Button In the unlikely event that the DHY 03 unit fails to respond press the reset button to reboot the unit Configuration Settings Switches T...

Страница 31: ...tector Auto Answer Enable SW4 ON This switch enables the integrated ring detector which automatically answers incoming calls after the number of rings set in parameter 5 see page 26 The default is 3 rings Note double cadence ring tones will count both rings in the cadence pattern Acoustic Cancellation Enable SW6 OFF When switch SW6 is enabled the DHY 03 performs a local acoustic cancellation on th...

Страница 32: ...y to dial out using Tone Dialling This port is also used to adjust the operational parameters and upload new firmware Full details are given in chapter 3 Figure 2 8 DHY 03EC Diagram Jumper and Select Switcher Functions J1 is used to switch an extra 10dB of audio input gain to allow for use of domestic level mixing desks J2 selects incoming DC voltage to 15V 1 2 or 5V 2 3 J3 J4 set gains for signal...

Страница 33: ...as been provisionally assumed that the disconnect tones are at the ETSI standard Code 1 in the table below Country Code Disconnect Disconnect Details Dipswitches Tone Type set on Frequencies power up ETSI TBR21 1 400Hz Continuous 1 Argentina 2 400Hz Continuous 2 Australia 3 400Hz Continuous 1 2 Austria 4 400Hz Continuous 3 Bahrain 5 400Hz Continuous 1 3 Belgium 6 400Hz Continuous 2 3 Brazil 7 400H...

Страница 34: ...ontinuous 1 3 5 6 Portugal 54 400Hz Continuous 2 3 5 6 Romania 55 400Hz Continuous 1 2 3 5 6 Russia 56 400Hz Continuous 4 5 6 Saudi Arabia 57 400Hz Continuous 1 4 5 6 Singapore 58 400Hz Continuous 2 4 5 6 Slovakia 59 400Hz Continuous 1 2 4 5 6 Slovenia 60 400Hz Continuous 3 4 5 6 South Africa 61 400Hz Continuous 1 3 4 5 6 South Korea 62 400Hz Continuous 2 3 4 5 6 Spain 63 400Hz Continuous 1 2 3 4 ...

Страница 35: ...s The unit can be programmed with other settings so please contact us if you need the settings for a different country to be implemented In this case it would be necessary to have a technical specification of the line conditions an audio recording or a specification of the disconnect tone parameters tone line reversal or K break Hybrid Technical Description The hybrid has to be very flexible to ma...

Страница 36: ... to achieve the best echo cancellation However the dynamic performance of this algorithm i e the speed that the echo cancellation is optimised is inversely dependant on the maximum delay number of TAPs allowed so increasing the delay will result in a slightly poorer dynamic performance Calibration of DHY 03 Hybrid Where the dynamic performance or the rejection ratio is poor then the performance of...

Страница 37: ...stic Cancellation In addition to echo cancellation across the network the DHY 03 is able to perform local acoustic echo cancellation This is used when there is feedback from the audio output to the audio input usually due to the output being sent to speakers and being picked up by a microphone input The effect of this is that callers will hear themselves in echo and could make a conversation unten...

Страница 38: ...e from the serial port for changing the settings for use on non standard telephone systems or PABXs and would not normally need to be changed on standard systems Many of these parameters are critical to the correct operation of the DHY 03 Changing them may impact on the correct working of the unit or cause the unit to operate in a way that is outside the telecom approval regimes Our advice is that...

Страница 39: ...sss or ERR where n 1 6 and ssss is zero terminated string SAV n Initialise User n data to Current Settings of TI data ACK or ERR WRC Write Network Cancellation Coefficients ACK or ERR ACK should be followed by 3byte coefficients with EOD to finish WRP ppp hhhh Write Parameter ACK or ERR where ppp param number and hhhh is hex value followed by CRLF WUN n ssss Write User Name to User n where n 1 6 a...

Страница 40: ...on in milliseconds default 24 Min 10 Max 127 04 Calibration Register network cancellation coefficients 1 save next user hybrid coefficients 4 tune using current table 8 tune using all tables 05 Auto Answer Rings 0 Off 1 10 Number of rings before answering Overidden by dip switch SW4 06 Jumper Function Sum of following values sets JP2 Dip Switch 10 jumper function or dipswitch 10 for the DHY 03EC N...

Страница 41: ...e Register 59 38 Current TI Settings Disconnect Min Line reversal or K break minimum time present in 8ms units 0 unused 39 Current TI Settings Disconnect Max Line reversal or K break maximum time present in 8ms units 0 unused 40 Current TI Settings Telephone Gain In 12 to 15 db Default 5 41 Current TI Settings Telephone Gain Out 12 to 15 db Default 1 42 Current TI Settings Telephone Overload log s...

Страница 42: ...meters are 240 247 Extended Parameter Description Calibration Register parameter 3 This register is used to perform the calibration cycle described in page 18 The settings are as follows Calibrate Save Network Cancellation Coefficients 1 Calibrate Telephone Interface Hybrid Coefficients without changing AC Termination 4 Calibrate Telephone Interface Hybrid Coefficients changing AC Termination 8 Ch...

Страница 43: ...r each ACIM setting with the global compromise setting using the same table as ACIM 2 For each table there are 8 different entries 0 7 that allow for slight variation in the AC impedance presented by the central exchange and finally for each entry there are 2 sets of coefficients optimised for absolute rejection set 0 or for least mean square rejection set 1 The value entered should be the table o...

Страница 44: ...le 3 6 Telephone Interface Register 22 Use sum of required values Telephone Interface Register 23 parameters 32 57 82 107 132 157 182 Name RDLY2 MRTO RCC Function Ring Delay Bit 2 Ring Timeout Ring Confirmation Count Time Value 128 1024ms See Table See Table Table 3 7 Telephone Interface Register 23 Use sum of required values RTO Value in Reg 23 0 8 16 24 32 40 48 56 Timeout in ms 80 128 256 384 5...

Страница 45: ... Function Tip Ring DC Voltage Minimum Operational Loop Current Current Limiting DC Impedance 50 800 Ω Value 0 3 1V 64 3 2V 128 3 35V 192 3 5V 0 10mA 16 12mA 32 14mA 48 16mA 2 Enabled 60mA 1 800 Ω Table 3 11 Telephone Interface Register 26 Use sum of required values Telephone Interface Register 30 parameters 35 60 85 110 135 160 185 Name FULL2 ACIM Function Enhanced Full Scale x2 AC Impedance Value...

Страница 46: ...parameters 36 61 86 111 136 161 186 Name FULL FOH OHS2 FILT LVFD Function Full Scale Mode Fast Off Hook On Hook Speed2 3dBFS Filter Pole Select Line Voltage Force Disable Value 128 Full Scale Mode 0 512ms 32 128ms 64 64ms 96 8ms 0 0 5ms 8 3ms 0 5Hz 2 200Hz 1 Disable auto switch of Line Voltage to 0v at Low Voltages Table 3 14 Telephone Interface Register 31 Use sum of required values Telephone Int...

Страница 47: ...Percentage 12 5 25 37 5 50 62 5 75 87 5 100 Parameter Value 1 2 3 4 5 6 7 8 Table 3 17 Adaptation Response Parameter Values default value and set value for firmware versions before v1 40 Miscellaneous Register parameters 45 70 95 120 145 170 195 A number of miscellaneous bits have been defined in this register to set new features in the code Three new bits have been defined in this version Bit 5 i...

Страница 48: ...eed to detect the tone before disconnecting the call Multiply this value by the number of cycles and divide by 8 for the time in milliseconds for which the tone must be present before disconnecting When cadence pattern is non zero then this parameter is set in the same way as cadence pattern 1 above It is only used when there is a double pattern in the signal cadence Cycles for Transform parameter...

Страница 49: ...Signal 4 Technical Specification DHY 03 Connection Details All of the connections are located on the rear of the DHY 03 Figure 4 1 DHY 03 Rear Panel Connections Line Output The line output is an XLR 3 pin male connector XLR 3 32 50 Ω balanced floating Pin 1 Screen Pin 2 Phase Pin 3 Non phase Mic Line Input The line input is an XLR 3 pin female connector XLR 3 31 10k Ω balanced floating Pin 1 Scree...

Страница 50: ...0V Pin 5 Opto isolated DTMF Detect Indicator NPN emitter Pin 6 Momentary Latch Divert switch action connect to 0v for latching action Pin 7 Opto isolated Line Connect Indicator NPN collector Pin 8 5volts out current limited supply for pins 7 9 Pin 9 Opto isolated DTMF Detect Indicator NPN collector The remote line connect indicator mimics the front panel line connect button lamp i e it flashes whe...

Страница 51: ...tor to cross connect to another DHY 03 This will allow a single TBU channel on a mixing desk to handle 2 calls one to each DHY 03 Alternatively the conference output signals can be used as a record output by fitting the JP3 jumper on the main PCB The output is then a sum of the caller and main audio input so both sides of the conversation can be recorded from this output Pin 1 N C Pin 2 N C Pin 3 ...

Страница 52: ... screen Pin 19 Remote DTMF Output voltage set by switch 5 Pin 20 Line Output phase Pin 21 Line Output non phase Pin 22 0V screen Pin 24 15V Pin 25 5V Pin 26 15V Pin 27 0V Pins 28 29 Earth Pin 30 Remote Line Connect Switch connect to or activate Pin 31 Remote Line Connect Ring Indicator voltage set by switch 4 Pin 32 0V Row B Pin 18 0V Pin 22 0V Pin 24 15V Pin 25 5V Pin 26 15V Pin 27 0V Pin 28 Seri...

Страница 53: ...0 rings Power Filtered IEC continuously rated 85 264V AC 47 63Hz max 10W Power to DHY 03EC 15 V DC 160mA per rail or regulated 5 V DC 600mA Table 4 1 Technical Specification Physical Specification Order Code Description Height Width Depth Total Nett Weight Total Gross Weight DHY 03 Automatic digital TBU with ringing detector free standing 4 5cm 21 8cm 17 5cm 1 25kg 2 0kg DHY 03S Automatic digital ...

Страница 54: ...l external divert relay unit DHY 03RLY and is enabled by setting parameter 2 to 17 or 11 hex Approvals Information Sonifex is a BABT approved manufacturing facility with a license to build telecommunications equipment and all telecom products are compliant with BS6301 BS7002 BS415 and CTR21 The following product description is necessary for BABT approval and provides information on the connection ...

Страница 55: ...Main Output Conferencing Port Serial Port Remotes Conditions This apparatus is not designed for use under controlled conditions of temperature and relative humidity Series Connection When connected into the loop connection between the main apparatus and the PSTN this apparatus introduces a voltage drop at a current of 40mA of 0 300V The apparatus should not be used in conjunction with other series...

Страница 56: ...w w w sonifex co uk t 44 0 1933 650 700 f 44 0 1933 650 726 sales sonifex co uk ...

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