When my rtsp server adds audio, the complete_example program error

[cafecai]

When my rtsp server adds audio, the complete_example program error. VLC media player
connects to rtsp server, it can play video and audio normally

/mnt/myRtspClient/example # ./complete_example rtsp://192.168.1.21/live.sdp
Start play rtsp://192.168.1.21/live.sdp
Then put video data into test_packet_recv.h264
RTSP/1.0 200 OK
CSeq: 1
Date: Thu Jan 1 08:01:26 1970
Public: OPTIONS, DESCRIBE, SETUP, PLAY, PAUSE, TEARDOWN
Server: rtsp_demo

[Client.GetResponse().c_str()]RTSP/1.0 200 OK
CSeq: 2
Date: Thu Jan 1 08:01:26 1970
Server: rtsp_demo
Content-Type: application/sdp
Content-Length: 416

v=0
o=- 0 0 IN IP4 0.0.0.0
s=rtsp_demo
t=0 0
a=control:rtsp://192.168.1.21/live.sdp
a=range:npt=0-
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1;sprop-parameter-sets=Z0IAKp2oHgCJ+WbgICAgQA==,aM48gA==
a=control:rtsp://192.168.1.21/live.sdp/track1
m=audio 0 RTP/AVP 97
c=IN IP4 0.0.0.0
a=rtpmap:97 PCMA/48000/1
a=control:rtsp://192.168.1.21/live.sdp/track2

debug: mt=video,line=rtpmap:96 H264/90000
debug: mt=video,line=fmtp:96 packetization-mode=1;sprop-parameter-sets=Z0IAKp2oHgCJ+WbgICAgQA==,aM48gA==
debug: mt=video,line=control:rtsp://192.168.1.21/live.sdp/track1
debug: mt=audio,line=rtpmap:97 PCMA/48000/1
debug: mt=audio,line=control:rtsp://192.168.1.21/live.sdp/track2
MyRTP_SetUp TCP: 0
Setup Session audio: MyRtsp: Success
MyRTP_SetUp TCP: 0
Setup Session video: MyRtsp: Success
RTSP/1.0 454 Session Not Found
CSeq: 4
Date: Thu Jan 1 08:01:26 1970
Server: rtsp_demo

DoSETUP error

[Ansersion]

I'm so sorry that the 'PCMA' is not supported yet.
m=audio 0 RTP/AVP 97 c=IN IP4 0.0.0.0 a=rtpmap:97 PCMA/48000/1 a=control:rtsp://192.168.1.21/live.sdp/track2

[cafecai]

What audio formats are supported?

[Ansersion]

The audio formats supported as follow:
MPA
g711(mu-law)