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Configuring Security Features
155
a=fmtp:34 CIF=1; QCIF=1
a=rtpmap:102 mp4v-es/90000
a=fmtp:102 CIF=1 QCIF=1 MaxBR=3840
a=sendrecv
The callee receives the INVITE message with the RTP encryption algorithm. The callee
answers the call and responses with a 200 OK message carrying the negotiated RTP
encryption algorithm.
The sample of the RTP encryption algorithm carried in the SDP of the 200 OK message
for reference:
m=audio 11780 RTP/SAVP 0 101
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:NTAyNzVjNTU2YTEyNzk5YzQyZjFkNThlNDI4YzRl
a=sendrecv
a=ptime:20
a=fmtp:101 0-15
m=video 0 RTP/SAVP 99 34 102
a=crypto:1 AES_CM_128_HMAC_SHA1_80
inline:NDcwMjkyMjk0YjlhNTM0NzY0MmJmZDA2MjZkZWUw
a=crypto:2 AES_CM_128_HMAC_SHA1_32 inline:N2I3MjY1ZDIyNWY2NmI2ADczYTM0NjY2MjNkMzE3
a=crypto:3 F8_128_HMAC_SHA1_80 inline:NWViNWI2ZmEyNmZkMWU5ODRiNTgyMDc3NmVmYjJm
a=rtpmap:99 H264/90000
a=rtpmap:34 H263/90000
a=rtpmap:102 mp4v-es/90000
a=fmtp:99 profile-level-id=42800D; packetization-mode=0; max-mbps=11880
a=fmtp:34 CIF=1; QCIF=1
a=fmtp:102 CIF=1 QCIF=1 MaxBR=3840
a=sendrecv
You can configure the SRTP feature on a per-account basis. When SRTP is enabled on
both phones, the RTP streams will be encrypted, and a lock icon appears on the LCD
screen of each IP phone after the successful negotiation.
Note
If you enable SRTP, then you should also enable TLS. This ensures the security of SRTP
encryption. For more information on TLS, refer to
on page
.
Summary of Contents for VP530 IP
Page 1: ......
Page 4: ......
Page 12: ......
Page 111: ...Configuring Basic Features 99...
Page 153: ...Configuring Advanced Features 141...
Page 171: ...Configuring Security Features 159...
Page 182: ...Administrator s Guide for VP530 IP Video Phone 170 Phonebook on page 266...
Page 183: ...Resource Files 171...
Page 194: ...Administrator s Guide for VP530 IP Video Phone 182 3 Click OK to confirm the resetting...
Page 195: ...Troubleshooting 183...
Page 344: ...Administrator s Guide for VP530 IP Video Phone 332...