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Net-2000™ Voice Codec Unit 
User’s Manual

 

 

DVSI Confidential Proprietary 

Page ii 

Information – Section 

Information of END USER's limitations, duties and obligations 
regarding  nondisclosure  and  copying  of  the  Net-2000™-P25 
Voice  Codec  Unit  and  AMBE

®

  and  AMBE+™  Software,.  

Proprietary  Information  shall  be  used  only  by  employees  of 
END  USER  and  only  at  the  Designated  Site,  except  as 
provided under this agreement. 
 
6.4 

END USER shall have no obligations for disclosure 

or use of Proprietary Information which: (i) is already known to 
END USER, at time of disclosure by DVSI; (ii) is or becomes 
publicly  known  through  publication,  inspection  of  product  or 
otherwise  through  no  wrongful  act  of  END  USER;  (iii)  is 
received  from  a  third  party  without  restriction  and  without 
breach  of this Agreement; (iv) is independently developed by 
END USER; (v) is disclosed to a third party by or on behalf of 
DVSI without restriction; or (vi) is approved for release or use 
by written authorization of DVSI. 
 
6.5 

Notwithstanding  any  termination  pursuant  to 

Section  3.0,  the  obligations  set  forth  in  this  Section  6.0  shall 
survive termination of this Agreement. 
 

7.0 

Limited Warranty 

 
7.1 

DVSI  warrants  the  Net-2000™-P25  Voice  Codec 

Unit  and  AMBE

®

  and  AMBE+™  Software,  to  be  free  from 

defects in materials and workmanship under normal use for a 
period  of  ninety  (90)  days  from  the  date  of  delivery.      DVSI 
further  warrants  that  the  Net-2000™-P25  Voice  Codec  Unit 
and  AMBE

®

  and  AMBE+™  Software,  operate  in  accordance 

with  the  written  specifications  delivered  to  END  USER  with 
the Net-2000™-P25 Voice Codec Unit,. 
 
7.2 

Except  as  stated  in  Section  7.1,  the  Net-2000™-

P25  Voice  Codec  Unit  and  AMBE

®

  and  AMBE+™  Software,  

are provided "as is" without warranty of any kind.  DVSI does 
not  warrant,  guarantee  or  make  any  representations 
regarding  the  use,  or  the  results  of  the  use,  of  the  Net-
2000™-P25  Voice  Codec  Unit  and  AMBE

®

  and  AMBE+™ 

Software, with respect to its correctness, accuracy, reliability, 
correctness or otherwise.  The entire risk as to the results and 
performance  of  the  Net-2000™-P25  Voice  Codec  Unit  and 
AMBE

®

  and  AMBE+™  Software,  is  assumed  by  the  END 

USER.    After  expiration  of  the  warranty  period,  END  USER, 
and  not  DVSI  or  its  employees,  assumes  the  entire  cost  of 
any  servicing,  repair  or  correction  of  the  Net-2000™-P25 
Voice Codec Unit and AMBE

®

 and AMBE+™ Software,. 

 
7.3 

DVSI warrants that it has the right to enter into this 

Agreement and to grant a license to use the Net-2000™-P25 
Voice  Codec  Unit  and  AMBE

®

  and  AMBE+™  Software,  to 

END USER. 
 
7.4 

Except  as  specifically  set  forth  in  this  Section  7.0, 

DVSI  makes  no  express  or  implied  warranties  including, 
without  limitation,  the  warranties  of  merchantability  or  fitness 
for  a  particular  purpose  or  arising  from  a  course  of  dealing, 
usage  or  trade  practice,  with  respect  to  the  Net-2000™-P25 
Voice  Codec  Unit  and  AMBE

®

  and  AMBE+™  Software,.  

Some states do not allow the exclusion of implied warranties, 
so the above exclusion may not apply to END USER.  No oral 
or  written  information  or  advice  given  by  DVSI  or  its 
employees shall create a warranty or in any way increase the 
scope  of  this  warranty,  and  END  USER  may  not  rely  on  any 
such information or advice.  The limited warranties under this 
section  7.0  give  END  USER  specific  legal  rights,  and  END 
USER may have other rights which vary from state to state. 
 
 

8.0 

Limitation of Liability 

 
8.1 

In  no  event  shall  DVSI  be  liable  for  any  special, 

incidental, indirect or consequential damages resulting from the 
use  or  performance  of  the  Net-2000™-P25  Voice  Codec  Unit 
and  AMBE

®

  and  AMBE+™  Software,  whether  based  on  an 

action  in  contract,  tort  (including  negligence)  or  otherwise 
(including,  without  limitation,  damages  for  loss  of  business 
profits, business interruption, and loss of business information), 
even  if  DVSI  or  any  DVSI  representative  has  been  advised  of 
the possibility of such damages. 
 
8.2 

Because  some  states  do  not  allow  the  exclusion  or 

limitation  of  liability  for  consequential  or  incidental  damages, 
the above limitations may not apply to END USER. 
 
8.3 

DVSI's  maximum  liability  for  damages  arising  under 

this  Agreement  shall  be  limited  to  20%  (twenty  percent)  of  the 
fees  paid  by  END  USER  for  the  particular  Net-2000™-P25 
Voice  Codec  Unit  which  caused  the  damages  or  that  is  the 
subject matter of, or is directly related to, the cause of action. 
 

9.0 

Taxes 

 
9.1 

All payments required under Section 4.0 or otherwise 

under  this  Agreement  are  exclusive  of  taxes  and  END  USER 
agrees  to  bear  and  be  responsible  for  the  payment  of  all  such 
taxes  (except  for  taxes  based  upon  DVSI's  income)  including, 
but  not  limited  to,  all  sales,  use,  rental  receipt,  personal 
property  or  other  taxes  which  may  be  levied  or  assessed  in 
connection with this Agreement. 
 

10.0 

Export 

 
10.1 

United States export laws and regulations prohibit the 

exportation  of  certain  products  or  technical  data  received  from 
DVSI under this Agreement to certain countries except under a 
special  validated  license.    As  of  May  20,  1996  the  restricted 
countries  are:  Libya,  Cuba,  North  Korea,  Iraq,  Serbia, 
Montenegro,  and  Iran.    The  END  USER  hereby  gives  its 
assurance  to  DVSI  that  it  will  not  knowingly,  unless  prior 
authorization  is  obtained  from  the  appropriate  U.S.  export 
authority,  export or re-export, directly or indirectly to any of the 
restricted  countries  any  products  or  technical  data  received 
from  DVSI  under  this  Agreement  in  violation  of  said  United 
States Export Laws and Regulations.  DVSI neither represents 
that  a  license  is  not  required  nor  that,  if  required,  it  will  be 
issued  by  the  U.S.  Department  of  Commerce.    Licensee  shall 
assume  complete  and  sole  responsibility  for  obtaining  any 
licenses required for export purposes. 
 

11.0 

Governing Law 

 
11.1 

This  Agreement  is  made  under  and  shall  be 

governed  by  and  construed  in  accordance  with  the laws of the 
Commonwealth  of  Massachusetts,  except  that  body  of  law 
governing  conflicts  of  law.    If  any  provision  of  this  Agreement 
shall  be  held  unenforceable  by  a  court  of  competent 
jurisdiction,  that  provision  shall  be  enforced  to  the  maximum 
extent  permissible,  and  the  remaining  provisions  of  this 
Agreement shall remain in full force and effect. 
 

12.0 

Notices 

 
12.1 

Any  notices  to  DVSI  which  may  be  given  hereunder 

shall  be  sent  in  writing  to:    Digital  Voice  Systems  Inc.,  234 
Littleton Road, Westford, MA, 01886 USA 
 

 
 

Содержание Net-2000-P25

Страница 1: ...Net 2000 P25 Voice Codec Unit User s Manual Version 2 0 0 December 2003 The Speech Compression Specialists...

Страница 2: ...d disclaims any implied warranties of merchantability and fitness for a particular purpose Digital Voice Systems Inc shall not be liable for any errors or for incidental or consequential damages in co...

Страница 3: ...s agreement to a third party together with a copy of this Agreement provided that END USER provides DVSI with a written notification of the transfer and provided that the third party agrees in writing...

Страница 4: ...anty or in any way increase the scope of this warranty and END USER may not rely on any such information or advice The limited warranties under this section 7 0 give END USER specific legal rights and...

Страница 5: ...ing 8 Ventilation The Net 2000 P25 VCU unit should be situated so that its location or position does not interfere with proper ventilation and air circulation around the unit For example the unit shou...

Страница 6: ...of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the lit...

Страница 7: ...Channel Communication 4 RS 232 Serial Port 5 RACK MOUNT INSTALLATION 6 NET 2000 P25 VCU SETUP CONTROL 7 OVERVIEW 7 VCU FRONT PANEL 7 Power On Switch 7 INITIAL SET UP RS 232 SERIAL CONNECTION 7 NET 200...

Страница 8: ...HEADER PARAMETER 18 TABLE 11 VOCODER RATE PARAMETER 19 TABLE 12 CMODE PARAMETER 19 TABLE 13 TONE IDX PARAMETER 21 TABLE 14 TONE AMP PARAMETER 22 TABLE 15 WS PARAMETER 22 TABLE 16 FORMAT PARAMETERS 22...

Страница 9: ...DHCP server when available on a Local Area Network LAN The embedded user interface allows the operation software to be field upgradeable Interfaces To meet a wide variety of communication system requ...

Страница 10: ...the Net 2000 P25 make it easy to select analog audio interfaces select the vocoder mode and to establish real time full duplex communication across the Ethernet connection In addition to the control...

Страница 11: ...Net 2000 P25 VCU Rear Panel Rear Panel Connections Item No Name Connector Type Status 1 Serial Port DE9s Active 2 LAN RJ 45 Active 3 RS 422 Synchronous DB 15HD Not Active 4 RS 422 Asynchronous RJ 45...

Страница 12: ...be used to exchange voice and channel data with the VCU This UDP streaming protocol allows for real time full duplex communication with another Net 2000 P25 VCU box VOIP Mode and for bit exact testing...

Страница 13: ...the network RS 232 Serial Port Connecting to RS 232 The RS 232 serial port located on the back of the Net 2000 P25 VCU unit provides low level set up functions The interface itself consists of a simp...

Страница 14: ...are three flat head Philips screws on each side that secures the rack mount plate to the Net 2000 P25 VCU chassis as shown below To avoid scratching the sides of the Net 2000 P25 VCU when removing the...

Страница 15: ...nformation about network settings operating mode and system control Connecting two Net 2000 P25 VCU units together can be done by entering the IP address or hostname of the other Net 2000 P25 VCU unit...

Страница 16: ...e terminal console command network as follows adsh network dhcp h hostname w workgroup i ipaddress m netmask g gateway n nameserver d domainname The arguments to the network command are described belo...

Страница 17: ...lled remotely by accessing the unit s built in web server using a PC s web browser as the graphical user interface To connect to the Net 2000 VCU web server home page first open up the web browser sof...

Страница 18: ...rocess data through the encoder or decoder VOIP Mode VOIP mode indicates that the Net 2000 VCU is in Target IP address communications mode and sending data over the Ethernet interface VOIP mode is als...

Страница 19: ...gnal input and output on the RJ11 jack Item 8 in Table 1 Rear Panel Connectors The output will also be on the output RCA jack Item 6 Table 1 Rear Panel Connectors The Net 2000 VCU always outputs the a...

Страница 20: ...nel conditions and or significant bit errors In addition to the enhanced FEC capability the Net 2000 VCU Half Rate vocoder provides voice activity detection and DTMF Knox Tone detection and regenerati...

Страница 21: ...VCU The Voice Source menu is ignored Control Buttons The Net 2000 VCU home page provides five buttons for selection of additional settings and information Info Section Selecting the Info Page will di...

Страница 22: ...o the Output Gain setting box and then select Configure to initiate the new setting To lower the I O gain below zero enter a negative number using a minus sign in front of the value Configure Button S...

Страница 23: ...these settings Start and Stop Buttons Upon power up the Net 2000 P25 VCU loads the default settings and runs the half rate decoder in loopback over the 4 wire interface Click the Stop button to put th...

Страница 24: ...ted in VOIP mode Voice Reset and Acknowledge packets are not used When the VCU is in File Mode is monitors UDP port 4000 or a different port if one has been selected using the web interface for incomi...

Страница 25: ...ode 18 19 0 0 0 0 0 0 0 0 1 0 x x x x x x tone idx 20 21 X 0 0 0 0 0 0 0 0 x x x x x x x tone amp 22 23 0 0 0 0 0 0 0 0 1 0 x x x x x x ws 24 25 0 0 0 0 x x x x 0 0 0 x 0 0 x x format 26 27 x x x x x...

Страница 26: ...7 6 5 4 3 2 1 0 Byte 3 7 6 5 4 3 2 1 0 Hex Value Channel Data 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0x0003 Table 9 type header parameter seq Bytes 4 and 5 hold the 16 bit sequence number see Table 5 The se...

Страница 27: ...s on the vocoder in use Tables 12a and 12b list values for the decoder input and encoder output flags of the Channel packet Cmode parameter Decoder Input Flags Byte 16 7 6 5 4 3 2 1 0 Byte 77 7 6 5 4...

Страница 28: ...ust be transmitted to the decoder otherwise if DTX is in use the frame does not need to be transmitted If the VAD flag is set the packet contains voice data otherwise the frame is a silence frame If t...

Страница 29: ...0 0 1 1 0 1 141 DTMF 1209 941 0 0 0 0 0 0 0 0 1 0 0 0 1 1 1 0 142 DTMF 1477 941 0 0 0 0 0 0 0 0 1 0 0 0 1 1 1 1 143 KNOX 0 1162 820 0 0 0 0 0 0 0 0 1 0 0 1 0 0 0 0 144 KNOX 1 1052 606 0 0 0 0 0 0 0 0...

Страница 30: ...meter format Format include both the number of soft decision bits in the channel data and the format of the voice data to synthesize This number of soft decision bits should be between 1 hard decision...

Страница 31: ...x x x x x x x x channel 191 192 Table 18 channel parameters If channel contains hard decision data no soft decision error detection channel i 0x01 is a one channel i 0x00 is a zero If 8 bit soft decis...

Страница 32: ...x x x x x x x x x voice 0 28 29 x x x x x x x x x x x x x x x x voice 1 30 31 x x x x x x x x x x x x x x x x voice 2 344 345 x x x x x x x x x x x x x x x x voice 159 Table 18 Encode Packet Voice pa...

Страница 33: ...Byte 2 7 6 5 4 3 2 1 0 Byte 3 7 6 5 4 3 2 1 0 Hex Value Voice Data 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0x0002 Table 20 type header parameter seq Bytes 4 and 5 hold the 16 bit sequence number see Table 5 T...

Страница 34: ...ways be zero for the Standard APCO encoder cmode parameter Decoder Output Flags Byte 16 7 6 5 4 3 2 1 0 Byte 77 7 6 5 4 3 2 1 0 Hex Value Voice Active 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0x0002 Data Inval...

Страница 35: ...ate values voice data type in the format element is listed in Table 11 format Soft decision voice data Voice Data Formats Byte 24 7 6 5 4 3 2 1 0 Byte 25 7 6 5 4 3 2 1 0 Hex Value Linear 16 bit PCM 0...

Страница 36: ...the VCU Reset Packet Bytes msb lsb Bit 7 6 5 4 3 2 1 0 Bit 7 6 5 4 3 2 1 0 Parameter Name 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 len 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 type Header 4 5 x x x x x x x x x...

Страница 37: ...2 7 6 5 4 3 2 1 0 Byte 3 7 6 5 4 3 2 1 0 Hex Value Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0x0000 Table 27 type header parameter seq Bytes 4 and 5 hold the 16 bit sequence number see Table 5 The sequenc...

Страница 38: ...set If bit zero is set the encoder state is reset If bit one is set the decoder state is reset To reset both the encoder and decoder state set both bits zero and one Which parameter Reset Flags Byte 1...

Страница 39: ...Parameter Name 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 Len 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Type Header 4 5 x x x x x x x x x x x x x x x x Seq 6 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Cmd Table 18 Ack Pack...

Страница 40: ...7 6 5 4 3 2 1 0 Byte 3 7 6 5 4 3 2 1 0 Hex Value Ack 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0x0000 Table 30 type header parameter seq Bytes 4 and 5 hold the 16 bit sequence number see Table 5 The sequence n...

Страница 41: ...ocol The cmd element is used to indicate the packet type being acknowledged Since Reset packets are the only packets acknowledged this value is always zero Cmd parameter Packet Type Ack ed Byte 16 7 6...

Страница 42: ...0 0 0 0 0 1 0 0 0 len 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 type Header 4 5 x x x x x x x x x x x x x x x x seq 6 7 X x x x x x x x x x x x x x x x cmd 8 9 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 reason Table...

Страница 43: ...2 1 0 Hex Value Nack 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0x0001 Table 33 type header parameter seq Bytes 4 and 5 hold the 16 bit sequence number see Table 5 The sequence number is used as a method to det...

Страница 44: ...e Type x x x x x x x x x x x x x x x x 0xXXXX Table 19 cmd parameter reason The reason element is used to indicate the reason for the Nack This value is currently always 0xFFFF invalid packet Other va...

Страница 45: ...ctor DE9s Net 2000 P25 VCU RS 232 Serial Port Pin Out as viewed from the back of the unit Pin Number Name 1 4 6 Connected together internally 2 Tx 3 Rx 5 Ground 7 CTS 8 RTS 9 No Connection Table 35 RS...

Страница 46: ...hms Bandwidth 20 Hz to 4 kHz A D Resolution 16 bits A D Sampling Rate 8 kHz Minimum Load 600 Ohms Note A digital max produces 1 414 V signal on the line output when the codec output gain is 0 dB Hands...

Страница 47: ...e the VCU access to the shared folder by typing the following commands adsh mkdir var upgrade adsh smbmount host share var upgrade where host is the PC s host name and share is the name of the shared...

Страница 48: ...Page 40 DVSI Confidential Proprietary NOTES...

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