config.json

{
	"audioCodecs": ["PCMA/8000/1", "PCMU/8000/1", "G729/8000/1"],
	"dropCallsOnFail": false,
	"firstRetryIntervalSec": 15,
	"maxAccounts": 3,
	"maxCalls": 4,
	"pjThreadCount" : 2,
	"pjMediaThreadCount" : 4,
	"pjLogLevel": 4,
	"retryIntervalSec": 30,
	"timeoutSec": 600,
	"refreshIntervalSec" : 120,
	"transport": 1,
	"uaPrefix": "TinyPhone Pjsua2 v",
	"prefferedAudioDevices" : [ "sound", "usb" , "headphone", "audio" , "microphone" , "speakers" ],
	"useDefaultAudioDevice" : true,
	"securityCode" : "D9C853F4897CF64307DB652246827FAC83111303F3E207F8FD9F5E5DC89A9EF9",
	"autoUnHold" : true,
	"testAudioDevice" : true,
	"unregisterOnDeviceError" : true,
	"deviceErrorAlert" : true,
	"disableVAD" : true,
	"clockRate" : 8000,
	"enableNoiseCancel" : false,
	"ecTailLen" : 200,
	"enableWSEvents" : false,
	"enableMetrics" : true,
	"metricsProto" : "UDP",
	"metricsServerHosts" : ["10.47.192.13"],
	"metricsServerPort" : 8125,
	"autoDeviceRefresh" :  true,
	"autoAnswer" : true,
	"persistAccounts" : true,
	"enableSTUN" : true,
	"enableICE" : false,
	"stunServers" : [ "stun.l.google.com:19302" ],
	"handleNOTIFY" : true,
	"autoAnswerDelay" : 1000
}