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License and Warranty 

The Speech Compression Specialists 

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copying of the 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 VC-20™ - Vocoder Board and the 

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 VC-20™ - 
Vocoder Board and the AMBE™ Software operate in accordance with 
the written specifications delivered to END USER with the Voice 
Codec. 
 
7.2 

Except as stated in Section 7.1, the VC-20™ - Vocoder Board 

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 Voice Codec or 
AMBE™ Software with respect to its correctness, accuracy, reliability, 
currentness or otherwise.  The entire risk as to the results and 
performance of the VC-20™ - Vocoder Board or 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 Voice Codec or the AMBE™ 
Software. 
 
7.3 

DVSI warrants that it has the right to enter into this Agreement 

and to grant a license to use the 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 Voice Codec or 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 Voice Codec or VC-20™ - Vocoder Board 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 Voice Codec or VC-20™ - Vocoder 
Board 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 in 

writing and sent to:  Digital Voice Systems Inc., One Van de Graaff 
Drive, Burlington, MA., 01803, U.S.A. 
 

 

VC-20

 - Vocoder Board User’s Manual

 

Summary of Contents for VC-20

Page 1: ...Digital Voice Systems Inc The Speech Compression Specialists VC 20 Serial Speech Data Interface Application Note Version 1 2 Nov 2002 VC 20 Serial Speech Data Interface ...

Page 2: ...makes no warranties with respect to the documentation and 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 connection with the furnishing performance or use of this manual or the examples herein The information in this document is subject to change with...

Page 3: ...a written notification of the transfer and provided that the third party agrees in writing to accept all the terms and conditions of this agreement Upon any such transfer END USER s rights under this Agreement shall terminate pursuant to Section 3 0 b END USER may relocate the Voice Codec and the subsequent location shall then be considered the Designated Site c Except as provided in this Section ...

Page 4: ...hts 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 Voice Codec or VC 20 Vocoder Board whether based on an action in contract tort including negligence or otherwise including without limitation damages for loss ...

Page 5: ...stream is processed by the decoder and converted into a synthetic speech signal which is then converted into an analog signal using the on board D to A converter The encoder and decoder are fully asynchronous The VC 20 vocoder board is designed to use an Analog Devices AD28msp02 codec during normal operation This normal configuration can be modified so that the onboard codec is disabled and the 16...

Page 6: ...ut be zero mean at an average level of 22dbm0 Note The maximum sinusoidal input 32767 corresponds to 3 17 dBm0 FSR FSX The data input and output framing signals must come at a frequency of 8kHz and have a duration of one cycle of SCLK These two signals must come from the same source see Section 5 Example Configuration As outlined below FSX must be tri stated when SP_RDY is low to avoid multiple dr...

Page 7: ...on Name 1 2 3 4 5 6 Output DX 7 Output SP_RDY Input FSX 8 9 Input SCLK 10 11 Input DR 12 Input FSR 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 SEE VC 20 Users Manual SEE VC 20 Users Manual See corresponding VC 20 Manual for remaining pin out of Rows A and C Note Input INPUT to the VC 20 Output OUTPUT from the VC 20 VC 20 Serial Speech Data Interface page 7 ...

Page 8: ...5 Example Configuration VC 20 External Codec SYNC CLK DI DO SP_RDY C7 FSX B7 FSR B12 SCLK B9 DX B6 DR B11 Tri state Driver 6 Timing Diagrams Burst Mode 128kHz SCLK 5 16 MHz SCLK FSX FSR DX DR LSB MSB ...

Page 9: ...kHz SCLK FSX FSR DX DR LSB MSB 7 DVSI Technical Support If you have any problems with the VC 20 or have questions about its operation please contact Digital Voice Systems Inc 234 Littleton Road Westford MA 01886 Phone 978 392 0002 Fax 978 270 8866 email info dvsinc com web www dvsinc com VC 20 Serial Speech Data Interface page 9 ...

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