... /100Base-T RJ-45 for PC,2 RJ11 for Phone (FXS) Voice Feature Support SIP 2.0 and correlative RFCs Support IAX2 ... (optional) and T.38 SIP supports 2 SIP servers, public and private server. Can connect to public ... call forward/ transfer/ holding/ waiting/ conference Call control features: flexible dial map, hotline, empty calling No. reject service, black list for ...