Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones424Default 0Parameter account.X.srtp.unencrypted_rtcp.enable[1] <MAC>.cfgDescriptionIt enables or disables the phone’s capability to include unencrypted RTCP streams inSDP offers when using SRTP.Note: It works only if “account.X.srtp_encryption” is set to 1 (Optional) or 2(Compulsory). After successful negotiation, whether the RTCP stream is encrypted ornot depends on SDP answer.PermittedValues0-Disabled1-Enabled, the phone offers both encrypted and unencrypted RTCP streams(Unencrypted RTCP streams carry UNENCRYPTED_SRTCP session parameters) in SDPoffersDefault 0[1]X is the account ID. For T54S/T48S/T48G/T46S/T46G/T29G, X=1-16; forT52S/T42G/T42S, X=1-12; forT41P/T41S/T27P/T27G, X=1-6; for T40P/T40G/T23P/T23G, X=1-3; for T21(P) E2, X=1-2; for T19(P) E2, X=1.Encrypting and Decrypting FilesYealink IP phones support downloading encrypted files from the server and encrypting files before/whenuploading them to the server.You can encrypt the following files: Configuration files: MAC-Oriented CFG file (.cfg), Common CFG file (y0000000000xx.cfg),MAC-local CFG file (-local.cfg) or other custom CFG files (for example, sip.cfg, account.cfg) Contact Files: -contact.xmlTo encrypt/decrypt files, you may have to configure an AES key.NoteAES keys must be 16 characters. The supported characters contain: 0 ~ 9, A ~ Z, a ~ z and special characters:# $ % * + , - . : = ? @ [ ] ^ _ { } ~.TopicsConfiguration Files Encryption ToolsConfiguration Files Encryption and DecryptionContact Files Encryption and DecryptionEncryption and Decryption ConfigurationExample: Encrypting Configuration Files
