... (G.168), DTMF relay (RFC2833), and fax relay (T.30, T.38) etc.Rich FeaturesWSS100-TG supports all kinds of features ... , Alcatcl, Siemens, Huawei, ZTE and others. It also supports network-side ISDN connections to ISDN PBXs and supports features such ... RFC2833, INFO (SIP) , In-BandHardware· Ethernet Interface ConnectorRJ-45, 10/100 Base-T, 10/100 Auto Sensing·E1/T1 interfaceRJ-45· System Memory128 MB ...