Rear Panel Connections
Serial Port DB9s
LAN RJ-45
RS-422 Synchronous DB-15HD
RS-422Asynchronous RJ-45
2 Wire I/O RJ-11
Analog Line In RCAJack
Analog Line Out RCAJack
Handset RJ-14
AC Line In Pwr. Recp.
Mechanical Specifications
Dimensions: 17.25 X 3.5 X 7.25 inch
Weight: 4.5 pounds
AC Power Requirements
Voltage: 100 - 240 V ~
Frequency: 50 / 60 Hz.
Power: 28 W
AMBE is a registered trademark of Digital Voice Systems, Inc. AMBE+2 is a trademark of Digital Voice Systems, Inc. © Copyright Digital Voice Systems, Inc. 2003 All Rights Reserved. (2/03-
Specifications subject to change.
Ethernet Connectivity
TheNet-2000™-P25VCUgoesbeyondjustimplementingDVSI’spatentedHalf-
Rate Voice Compression Software, it also integrates an Ethernet interface for
remoteaccessandcontrol. The10Base-TEthernetconnectionontheNet-2000™-
P25 VCU allows full-duplex real-time or half-duplex non-real time voice
compressionapplicationsoveraLocalArea Network (LAN). Using the LAN, two
Net-2000™-P25VCU’scancommunicatetocreateaVoiceOverInternetProtocol
(VOIP)Ethernetbasedvocodercommunicationsystem. Communicatingbetween
twoNet-2000™-P25VCUis aseasyasenteringtheIPaddress(orhostname)of
the Net-2000™-P25 VCU units, selecting the desired voice interface and the
Full-Rate or Half-Rate Vocoder mode.
When two Net-2000™-P25 VCU communicate, each converts the input analog
speechintodigitalspeechsamples,encodesthespeechusingtheselectedAPCO
Full-Rate or Half-Rate mode and then sends the compressed bit stream out as
UDP packets over the Ethernet interface. Simultaneously, the compressed bit
stream of UDP packets from the other Net-2000™-P25 VCU is read in from the
Ethernetinterfaceanddecoded back in to digitalspeechsamples. Thedecoded
samples are converted back into analog speech via the AIC-10 codec whose
output is sent to both the handset and line-level output connections. Since the
channel data is a packet based UDP Ethernet protocol users can develop their
own customized controls and user interfaces so that the Net-2000™-P25 VCU
can fit into an endless array of applications.
TheEthernetLANconnectioncanalsobeusedtoencode/decodefilesfromaPC
makingtheNet-2000™-P25VCUidealforcompressed-voicestorageapplications
or non-real-time testing. Alternatively, the Net-2000™-P25 VCU can loop back
theVoIPinformationbacktoitselfforvoicemonitoringandevaluationapplications.
TheEthernet connection to aLAN provides the abilityfor any PC onthe network
to use a standard web browser to control the Net-2000™-P25 VCU. The user-
friendly web server built-into the Net-2000™-P25 makes it easy to select analog
audio I/O interfaces, select the vocoder mode and to establish communication
acrosstheEthernetconnection. Inadditiontothecontrol,thewebpagesdisplay
information about network settings, operating mode and system status. Since
the Net-2000™-P25 uses Ethernet, its web page can even be accessed from
notebook or tablet PC via wireless network.
Fast and Easy Set-up
Initialset-up of the Net-2000™-P25 VCU is straightforward and fastthanks to its
Ethernet network connection. It is equipped to handle IP address information
from a DHCP server when available on the LAN. Alternatively, the Net-2000™-
P25VCU’sRS-232serialportcanbeusedasaconsoleterminal
toallowlow-levelnetworksetupandselectionamongthevarious
input and output audio interfaces.
Variety of I/O
To meet a wide range of communication system requirements
the Net-2000™-P25 Voice Codec Unit hosts a variety of inputs
andoutputs. ForuncompressedanalogvoiceI/OtheNet-2000™-
P25VCUsupports2-wire,4-wireandhandsetanaloginterfaces.
For compressed voice data communication across a channel,
digitized speech can be transmitted and received through either
the Ethernet or RS-422 serial interface. A unique feature of the
Net-2000™-P25VCUisthatbothvoiceandchanneldatacanbe
transmitted over the Ethernet interface at the same time.
DVSIdeveloped the Net-2000™-P25 VCU to package thelatest
softwareinto a hardwareplatformthatdoes notrequirelicensing
fees or royalties. With off-the-shelf availability the Net-2000™-
P25 VCU provides cost effective voice compression without the
risks and engineering expenses associated with new product
development.
Contact Us
Digital Voice Systems, Inc. is the accepted leader in the
development of low-bit-rate, high quality voice compression
technology. DVSI provides both software and hardware based
voice coding solutions to equipment manufacturers throughout
theworld. DVSI’shighperformancevocodertechnologycombined
with innovative designs and advanced features, benefit a wide
range of digital communications and voice storage applications.
For additional information or to learn more about DVSI and its
products visit us on-line at www.dvsinc.com.
The Speech Compression Specialists
Digital Voice Systems, Inc.
234 Littleton Road
Westford, MA 01886
Tel: (978) 392-0002
Fax: (978) 392-8866
Web: www.dvsinc.com
Built-In Web Server User Interface
