twjit: don't clear stats in twrtp_jibuf_reset() This function needs to reset all operating state of twjit to initial, but we should not clear any of our stats counters: those counters are across the lifetime of the RTP endpoint, including stops and restarts for call hold etc.

/* misc PSTN definitions */

#pragma once

#define	PSTN_CODEC_PCMU		0
#define	PSTN_CODEC_PCMA		8

#define	FRAME_20MS	160	/* samples per RTP packet */