Setelco DX-1688 is a versatile Digital and Hybrid Key Telephone(DHKTS) for the small medium enterprises(SME) .the DX-1688 has the power, flexibility and expandability to meet your growing business needs. This powerful digital system can be connected to both analogue (PSTN) and digital phone lines (ISDN).Setelco DX-1688 can support up to 8 CO lines and 44 extensions. It's also possible to System Interconnect, increasing the capacity to 16 CO lines and 88 extensions

Fully hybrid module design to meet all DIGIsonic DX Series Super Digital Key Telephone or Analogue handsets, regular telephones and fax machines, answering machines and modems.