Digital Voice Systems Net-2000-P25 Specifications page 2

Ethernet Connectivity
The Net-2000™-P25 VCU goes beyond just implementing DVSI's patented Half-
Rate Voice Compression Software, it also integrates an Ethernet interface for
remote access and control. The 10Base-T Ethernet connection on the Net-2000™-
P25 VCU allows full-duplex real-time or half-duplex non-real time voice
compression applications over a Local Area Network (LAN). Using the LAN, two
Net-2000™-P25 VCU's can communicate to create a Voice Over Internet Protocol
(VOIP) Ethernet based vocoder communication system. Communicating between
two Net-2000™-P25 VCU is as easy as entering the IP address (or hostname) 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
speech into digital speech samples, encodes the speech using the selected APCO
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
Ethernet interface and decoded back in to digital speech samples. The decoded
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.
The Ethernet LAN connection can also be used to encode/decode files from a PC
making the Net-2000™-P25 VCU ideal for compressed-voice storage applications
or non-real-time testing. Alternatively, the Net-2000™-P25 VCU can loop back
the VoIP information back to itself for voice monitoring and evaluation applications.
The Ethernet connection to a LAN provides the ability for any PC on the 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
across the Ethernet connection. In addition to the control, the web pages display
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
Initial set-up of the Net-2000™-P25 VCU is straightforward and fast thanks 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™-
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.
Rear Panel Connections
Serial Port
LAN
RS-422 Synchronous
RS-422 Asynchronous
2 Wire I/O
Analog Line In
Analog Line Out
Handset
AC Line In
Specifications subject to change.
AMBE+2 is a trademark of Digital Voice Systems, Inc.
P25 VCU's RS-232 serial port can be used as a console terminal
to allow low-level network setup and selection among the various
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
and outputs. For uncompressed analog voice I/O the Net-2000™-
P25 VCU supports 2-wire, 4-wire and handset analog interfaces.
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™-P25 VCU is that both voice and channel data can be
transmitted over the Ethernet interface at the same time.
DVSI developed the Net-2000™-P25 VCU to package the latest
software into a hardware platform that does not require licensing
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
the world. DVSI's high performance vocoder technology combined
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.
DB9s
RJ-45
DB-15HD
RJ-45
RJ-11
RCA Jack
RCA Jack
RJ-14
Pwr. Recp.
Built-In Web Server User Interface
Digital Voice Systems, Inc.
The Speech Compression Specialists
© Copyright Digital Voice Systems, Inc. 2003 All Rights Reserved. (2/03-
234 Littleton Road
Westford, MA 01886
Tel: (978) 392-0002
Fax: (978) 392-8866
Web: www.dvsinc.com