Poly ATA 400 Series - Configuring Call Settings; Configuring Secure RTP; Enable Secure RTP; Configure the Cryptographic Parameters for Secure RTP

Configuring Call Settings5
Configure call settings.
Configuring Secure RTP
Configure your phone to use secure RTP for encrypted audio.
Enable Secure RTP
Enable secure RTP for encrypted audio.
1. In the system web interface, go to Voice Services > SP N Service.
2. Under Calling Features, in the Value column, select the desired value for X_SRTP:
● Disable SRTP = No encryption
● Use SRTP Only = Require SRTP
● Use SRTP When Possible = SRTP is optional
3. Select Submit.
4. Restart your system when you complete your changes.
Configure the Cryptographic Parameters for Secure RTP
Configure the cryptographic parameters for the secure RTP stream.
1. In the system web interface, go to Voice Services > SP N Service.
2. Under Calling Features, in the Value column, enter the desired cryptographic parameters in a
comma-separate list for X_SRTPCryptos:
● AES_CM_128_HMAC_SHA1_32
● AES_CM_128_HMAC_SHA1_80
● AES_CM_192_HMAC_SHA1_32
● AES_CM_192_HMAC_SHA1_80
● AES_CM_256_HMAC_SHA1_32
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Chapter 5Configuring Call Settings