2. VoIP ?
VoIP is a technology that allows
telephone calls to be made over
computer networks like the Internet.

3. BLOCK DIAGRAM

4. SLIC
The STOO3 is a single Subscriber Line Interface
Circuit in a 2L pin dual in line(DIL) format. The ST003
has an integral dc/dc converter and ringing generation
unit.

5. CODEC
The IDT821024 is a single-chip, four channel PCM CODEC with on-
chip filters.

6. FPGA

7. VoIP PACKET
L2 HEADERIP HEADERUDP HEADER
RTP HEADER RTP
Payload

8. RTP : Real time protocol
 The protocol used to transmit digitized
audio or video signals over internet.
 Applications typically run RTP on top of
UDP to make use of its multiplexing.
 End to end delivery services include
payload type identification, sequence
numbering and time stamping.

9. CONCLUSION
As networks get larger and maintenance
costs continue to rise, a VOIP network for
voice communication becomes more
attractive. Because VOIP is a major step in
a new direction for voice communication,
many solutions have been implemented in
an attempt to best serve the marketplace.