E Computer Society, Washington, DC, 1985. 3. Introduction to CCITT Signaling System No. 7, ITU-T Rec. Q.700, ITU Helsinki, 1993. 4. Functional Description of the Message Transfer Part (MTP) of Signaling System No. 7, ITU-T Rec. Q.701, ITU Helsinki, 1993. 5. R. L. Freeman, Reference Manual for Telecommunication Engineering, 3rd ed., Wiley, New York, 2001. 6. BOC Notes on the LEC Networks-1994, Bellcore Special Report SR-TSV-002275, Issue 2, Piscataway, NJ, Apr. 1994. 7. Signaling System No. 7-Signaling Link, ITU-T Rec. Q.703, ITU Geneva. 1996. 8. Signaling System No. 7-Signaling Network Functions and Messages, ITU-T Rec. Q. 704, ITU Geneva, 1996. 9. Signaling System No. 7-Signaling Network Structure, ITU-T Rec. Q.705, ITU Geneva, 1993. CCITT SIGNALING SYSTEM NO. 7 10. Signaling System No. 1-Message Transfer Part Signaling Performance, ITU-T Rec. Q.706, ITU Geneva 1993. 11. Signaling System No. 7-Hypothetical Signaling Reference Connection, ITU-T Rec. Q.709, Helsinki, 1993. 12. Assigned Procedures for International Signaling Point Codes, ITU-T Rec. Q.708, ITU Geneva, 1999. 13. Signaling System No. 7-Functional - Description of the Signaling System Control Part (SCCP), ITU-T Rec. Q.711, ITU Geneva, 2001. 14. Formats and Codes, (Telephone User Part), CCITT Rec. Q.723, Fascicle VI.8, IXth Plenary Assembly, Melbourne, 1988. 15. Signaling System No. 7-Signaling Connection Control Part User Guide, ITU-T Rec. Q.714, ITU Geneva, May 2001. 16. Signaling System No. 7-General Function of Telephone Messages and Signals, CCITT Rec. Q.722, Fascicle VI.8, IXth Plenary Assembly, Melbourne, 1988. 17. Signaling System No. 7-Signaling Performance in the Telephone Application, ITU-T Rec. Q.725, ITU Geneva 1992. 18. R. L. Freeman, Telecommunication System Engineering, 4th ed., Wiley, Hoboken, NJ, 2004. VOICE-OVER PACKETS IN A PACKET NETWORK 15.1 AN OVERVIEW OF THE CONCEPT On the surface the concept seems fairly simple. We digitize the voice and break up the resulting serial bit stream into packets of some length. A header is added to e