... SIP authentication (none, basic, MD5), DNS name of server,Peer to Peer/ IP callDTMF:Support SIP info, DTMF Relay ... /TLS, SRTP security protocolQoS with DiffServNetwork tools in telnet server: including ping, trace route, telnet client Protocols:MAC ... ServerRTP: Real-time Transport ProtocolRTCP:Real-time Control ProtocolTelnet:Internet's remote login protocolHTTP:Hyper Text Transfer protocolFTP:File ...