Yealink SIP-T58V/A

Administrator’s Guide for SIP-T5 Series Smart Media Phones
688
b=TIAS:2097152
a=rtpmap:97 H264/90000
a=fmtp:97 profile-level-id=64001f; packetization-mode=1
a=rtpmap:98 H264/90000
a=fmtp:98 profile-level-id=42801f
a=rtpmap:99 H264/90000
a=fmtp:99 profile-level-id=42801f; packetization-mode=1
a=rtpmap:117 YL-FPR/90000
a=fmtp:117 yl-capset=7;yl-ver=1;yl-ext=19
a=ptime:20
a=rtcp-fb:* ccm fir
a=sendrecv
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:NDdmNGIxYjJiNjkwYmEwNDg4MDVlYmMyYTA0YThl
a=crypto:2 AES_CM_128_HMAC_SHA1_32
inline:IGE3NjY1MmZjYWEzOTQ4ZmU3ODEwZWQ3MWI3ZWYx
a=crypto:3 F8_128_HMAC_SHA1_80 inline:ZjlmZjg3Yjk5MmRkYTBjNDI0ZDRlNzFjZTc2MGIx
The callee receives the INVITE message with the RTP encryption algorithm, and then answers the
call by responding with a 200 OK message which carries the negotiated RTP encryption
algorithm.
Example of the RTP encryption algorithm carried in the SDP of the 200 OK message:
m=audio 50068 RTP/SAVP 118 9 0 8 18 101
a=rtpmap:118 opus/48000/2
a=fmtp:118 sprop-maxcapturerate=48000; maxaveragebitrate=40000;
a=rtpmap:9 G722/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:18 G729/8000
a=fmtp:18 annexb=no
a=ptime:20
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:ZDgyNzVlNzZkODQ5OTZhYmY4N2ZlNTI0ZjIyYTRl
a=sendrecv
m=video 50070 RTP/SAVP 97 98 99 117
b=TIAS:2097000
a=rtpmap:97 H264/90000