... cancellation (G.168), DTMF relay (RFC2833), and fax relay (T.30, T.38) etc.Rich FeaturesWSS100-TG supports all kinds of features ... Features· Configuration: Configurable E1 or T1 Interface by WEB1E1 (30 Channels), 2E1 (60 Channels), 4E1 (120 Channels)1T1 ( ... Voice Proxy Function (for NAT/Firewall Traversal)· Fax ProcessingT.30, T.38 Fax Relay· BillingRadius Interface· Gateway ConfigurationWeb Based User ...