... Act for pick up, Act for dialing, Busy call back, Wake-up service, Hot line service, etc.;·Call restriction ... Specification: DIMENSIONStructure3U and 1U standard 19 inches chassis3U chassis support plug-in board:Total 16 slot: Integrated with ... /1900 MHZ CDMAFXS/FXOcharacteristicSUPPORT DTMF receive and send, support CID, support FSK generate and inspection.Providing standard Polarize Reverse Signal ...