32 FXS voip gateway, DAG2000-32S Supports G.711,G723.1,G.729 A/B Support 1 wan,3 lan router T.38 ... conversion between the IP and PSTN.Large port access gateway Standard SIP protocols Standard G.723.1,G.729A/B,PCM A/U ... .80kgAdditional FeaturesCaller IDBellcore Type 1 & 2, ETSI,BT,NTT, and, DTMF-based CIDPolarity ReversalYesHomologationSafetyULComplianceFCC,CE Dinstar 32 Port FXS SIP ATA Gateway