Loop E2E

Without delaybuf:

WMME: 181 380

350

DSound: 172 361

350

With delaybuf:

WMME: 182 370 Dsound 182 350

m sip:localhost sleep 200 cd 0 3 cd 2 0 cc 0 1

pjsua_vc6 --ec-tail 0 --rec-file rec.wav --add-codec pcmu --auto-answer 200 --no-vad --app-log-level 5

20:28:00.652 snd_buff Delay buffer start running, level=4