DTMF Mode: Choose DTMF mode, (RFC2833, Inband or SIP INFO).
SRTP Mode: Enable/disable encryption, message authentication and integrity, and replay attack protection to the RTP data in both unicast and multicast applications.
Silence Suppression: Enable/disable silence suppression during calls.
Jitter: Choose preferred jitter level.
Packetization Time: Choose preferred paketization time.
Audio Codec 1-7: Choose preferred audio codec.
ToS: Choose ToS level.