fixed interop with some proprietary MRCPv1 VXML platform (no SDP specified in RTSP SETUP)
fixed interop with some proprietary MRCPv1 VXML platform (no SDP specified in RTSP SETUP)

AaronZhangL/unimrcp-1,AaronZhangL/unimrcp-1,unispeech/unimrcp,AaronZhangL/unimrcp-1,unispeech/unimrcp,unispeech/unimrcp