Vertical-Comdial DSU and DSU II Single Line Reference Guide |
| (Model # 3812121-PDF) Note: Picture may not represent the actual product. We are continuously working on improving our website and reserve the right to change specifications, availability, and pricing without prior notice. DSU & DSU II Series Digital Telephone Systems. Impact & Impact Single Line Proprietary Telephone Station User's Guide designed for DSU w/ Software 20A & later, DSU II w/ software 4A & later, 8101N & SCS 8201N Rev A & later. | |
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