abnf.grammer

mgcp协议源代码和测试程序,还有一个编译器

packetizationPeriod  	= 1*4(DIGIT) ["-" 1*4(DIGIT)]
bandwidth            	= 1*4(DIGIT) ["-" 1*4(DIGIT)]
gainControl          	= "auto" / ["-"] 1*4(DIGIT)
encodedEncryptionKey 	= 1*(ALPHA / DIGIT / "+" / "/" / "=")
URItoObtainKey 			= 1*(SuitableLCOCharacter) / quotedString
PkgExtConnectionMode    = packageName "/" 1*(ALPHA / DIGIT)