4.12.1 Two- level Multipart MIME

All content in section 4.12 follows the product behavior described in endnote <81>.

The following example shows a two-level multi-part MIME, as described in section 3.15.

Content-Type: multipart/alternative;boundary="----=_NextPart_000_0059_01C91A7C.B83AD4E0"
Content-Length: 4014
------=_NextPart_000_0059_01C91A7C.B83AD4E0
Content-Type: application/sdp
Content-Transfer-Encoding: 7bit
Content-Disposition: session; handling=optional; ms-proxy-2007fallback
v=0
o=- 0 0 IN IP4 10.80.20.10
s=session
c=IN IP4 10.80.20.10
b=CT:35980
t=0 0
m=audio 50019 RTP/AVP 114 111 112 115 116 4 8 0 97 13 118 101
k=base64:9Izc9LPyPH3s1sl7XB0umY6R1B8H93Ru2knWs9pLcqxIlsPKgGq9iLaWcNNy
a=candidate:lLh4oR2NlwKLCbqk7rt7UJdJqHFEn9QeGNyYH6y8lGo 1 gKxsnl/9hhaK8j1Bc2tp4g UDP 0.830 10.80.20.10 50019 
a=candidate:lLh4oR2NlwKLCbqk7rt7UJdJqHFEn9QeGNyYH6y8lGo 2 gKxsnl/9hhaK8j1Bc2tp4g UDP 0.830 10.80.20.10 50014 
a=candidate:fI9holTcjzGzlUSH+fI+8hpZi/D+Y0bREpI35R6xbOY 1 V4xXN538Z4zIurS6nPYZiw TCP 0.190 131.107.1.36 52668 
a=candidate:fI9holTcjzGzlUSH+fI+8hpZi/D+Y0bREpI35R6xbOY 2 V4xXN538Z4zIurS6nPYZiw TCP 0.190 131.107.1.36 52668 
a=candidate:8/ugcPvoRu7X7870q7LcuZOAz8H1w1UZ1iz0JcyBfNI 1 Hv+ChtZX/SeNamyISSwstQ UDP 0.490 131.107.1.36 58325 
a=candidate:8/ugcPvoRu7X7870q7LcuZOAz8H1w1UZ1iz0JcyBfNI 2 Hv+ChtZX/SeNamyISSwstQ UDP 0.490 131.107.1.36 50664 
a=candidate:HSUcTjchkwG7k7cMX0tALAz4bty/uV/KvfSkV7Cc73I 1 nbUV3FDCmrixfcyP4PwwVQ TCP 0.250 10.80.20.10 50019 
a=candidate:HSUcTjchkwG7k7cMX0tALAz4bty/uV/KvfSkV7Cc73I 2 nbUV3FDCmrixfcyP4PwwVQ TCP 0.250 10.80.20.10 50019 
a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:1KjtxsXPzJi3Llf7jhKlGv9YSEdr0sPzwx9p7wQ2|2^31|1:1
a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:xgZxo13cfXDz1Vflqw2x+EB5cCdBh2Q0gsZfmE8D|2^31|1:1
a=maxptime:200
a=rtcp:50014
a=rtpmap:114 x-msrta/16000
a=fmtp:114 bitrate=29000
a=rtpmap:111 SIREN/16000
a=fmtp:111 bitrate=16000
a=rtpmap:112 G7221/16000
a=fmtp:112 bitrate=24000
a=rtpmap:115 x-msrta/8000
a=fmtp:115 bitrate=11800
a=rtpmap:116 AAL2-G726-32/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:97 RED/8000
a=rtpmap:13 CN/8000
a=rtpmap:118 CN/16000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=encryption:required
------=_NextPart_000_0059_01C91A7C.B83AD4E0
Content-Type: application/sdp
Content-Transfer-Encoding: 7bit
Content-Disposition: session; handling=optional
v=0
o=- 0 0 IN IP4 10.80.20.10
s=session
c=IN IP4 10.80.20.10
b=CT:35980
t=0 0
m=audio 50023 RTP/AVP 114 111 112 115 116 4 8 0 97 13 118 101
k=base64:9Izc9LPyPH3s1sl7XB0umY6R1B8H93Ru2knWs9pLcqxIlsPKgGq9iLaWcNNy
a=ice-ufrag:wdB31g
a=ice-pwd:yAbXGTFPoM+Kt2+fvhUUdKkclwSChFQj
a=candidate:1 1 UDP 2130706431 10.80.20.10 50023 typ host 
a=candidate:1 2 UDP 2130705918 10.80.20.10 50016 typ host 
a=candidate:2 1 TCP-PASS 6556159 131.107.1.36 50370 typ relay raddr 131.107.1.36 rport 50370 
a=candidate:2 2 TCP-PASS 6556158 131.107.1.36 50370 typ relay raddr 131.107.1.36 rport 50370 
a=candidate:3 1 UDP 16648703 131.107.1.36 56997 typ relay raddr 131.107.1.36 rport 56997 
a=candidate:3 2 UDP 16648702 131.107.1.36 56644 typ relay raddr 131.107.1.36 rport 56644 
a=candidate:4 1 TCP-ACT 7076863 131.107.1.36 50370 typ relay raddr 131.107.1.36 rport 50370 
a=candidate:4 2 TCP-ACT 7076350 131.107.1.36 50370 typ relay raddr 131.107.1.36 rport 50370 
a=candidate:5 1 TCP-ACT 1684797951 10.80.20.10 50018 typ srflx raddr 10.80.20.10 rport 50018 
a=candidate:5 2 TCP-ACT 1684797438 10.80.20.10 50018 typ srflx raddr 10.80.20.10 rport 50018 
a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:1KjtxsXPzJi3Llf7jhKlGv9YSEdr0sPzwx9p7wQ2|2^31|1:1
a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:xgZxo13cfXDz1Vflqw2x+EB5cCdBh2Q0gsZfmE8D|2^31|1:1
a=maxptime:200
a=rtcp:50016
a=rtpmap:114 x-msrta/16000
a=fmtp:114 bitrate=29000
a=rtpmap:111 SIREN/16000
a=fmtp:111 bitrate=16000
a=rtpmap:112 G7221/16000
a=fmtp:112 bitrate=24000
a=rtpmap:115 x-msrta/8000
a=fmtp:115 bitrate=11800
a=rtpmap:116 AAL2-G726-32/8000
a=rtpmap:4 G723/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:97 RED/8000
a=rtpmap:13 CN/8000
a=rtpmap:118 CN/16000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=encryption:required
------=_NextPart_000_0059_01C91A7C.B83AD4E0--