... codec (G.711u/aLaw, G.723.1,G.729,GSM,iLBC,T.38)Ideal PSTN termination for IP phones, VoIP gateway, IPPBX, ... ProcessingT.30, T.38 Fax Relay· BillingRadius Interface· Gateway ConfigurationWeb Based User Interface, Text Based Configuration· Remote ProvisioningHTTP ... Performance DataSignaling· PSTN Side ISDN PRI Standard: ANSI, NI-2, DMS, 5ESS· VoIP ProtocolSIP (RFC3261) , 2976 Info Method, 3515 Refer ...