TR-104: add some missing parameters that are requested by BT
Device.Services.VoiceService.{i}.SIP.Network.{i}.Enable Device.Services.VoiceService.{i}.VoIPProfile.{i}.RTP.SRTP.KeyingMethods Device.Services.VoiceService.{i}.VoIPProfile.{i}.RTP.SRTP.EncryptionKeySizes
Note that KeyingMethods and EncryptionKeySizes are not configurable in Asterisk so writting to these two parameters will return FAULT_9000.