Universally deployed, D4 equipment is the industry standard for enabling the delivery of integrated voice and data services. Pulsecom, the leading supplier of D4 products and systems, supplies the broadest range of open architecture D4 equipment in the industry. Our extensive D4 product line includes channel banks, central office bays, ISDN and frame relay systems, SMAS test systems, Stage One Distribution Networks, CPE BusinessBank® Systems and Outside Plant BusinessCarrier™ systems to suit every application.
D4 permits access providers to mix ISDN, frame relay, analog, digital, multidrop, and switched data, as well as PBX, automatic ringdown, key or standard telephones, E&M, DX, FXO/FXS, DPO/DPT, P-phone, video, alarm, high fidelity -- and many more circuits -- in the way that best meets their business needs. And with Pulsecom’s leadership in the D4 market, you can be assured of proven performance, flexibility, and economy.
