@book{9210,
	author = {Ahmad Hassan},
	title = {SIP based soft phone (PC-Voice Gateway Module)},
	publisher = {NUST School of Electrical Engineering & Computer Science,},
	year = {2006.},
	address = {Islamabad:},
	url = {http://10.250.8.41:8080/xmlui/handle/123456789/13241}
}