... for IP Call Center; 2. Modular design with maxima 32 FXS/FXO; Advantage:1. Expandable with modular design (Two ... the best equipment for IP Call Center;3. Support 32 FXO/FXS;Description:According to the demand of voice ... perform voice processing(G.711,G.726,G.729a/b,G.723,G.728,iLBC), echo cancellation, fax ... 1 Annex A, G.729 Annex A and Annex B, G.726,GSM,ARM,ILBCFax ProtocolT30, T38 and pass ...