Description DescriptionThe 4incoming lines 16 extensions PBX: Private Branch Exchange. PC Program & Billing System, Toll Restriction ,Pc Program, SMDR, FSK, DTMF Caller ID, Welcome Message ,Call Forwarding, Call interrupt and Break, Call Pickup Call on Hold, Call Duration Control, Class of Service ,Extension Flexible Numbering, Power Failure Transfer, Call Conference, Set Operator, Auto Attendant, Flash time Setting ,3 Class Lighting Protection. PC Program Billing system Toll Restriction PC Program SMDR FSK DTMF Caller ID Welcome Message Call Forwarding Call Interrupt and Break Call Pickup Call on Hold Call Duration Control Class of service Extension Flexible Numbering Power Failure Transfer Call Conference Set Operator Auto Attendant Flash Time Setting 3 Class Lighting Protection
