TY  - BOOK
AU  - Black,Uyless D.
TI  - Internet telephony: call processing protocols 
SN  - 0130255653
AV  - TK5105.8865 .B52 2001
PY  - 2001///
CY  - Upper Saddle River, NJ
PB  - Prentice Hall
KW  - Internet telephony
N1  - Includes bibliographical references (p. 360-361)
ER  -