Paradyne 3800 - Manual (Page 24)

2. Model 3830 Modem Installation
2-3 3830-A2-GB91-20 November 1996
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An 8-pin modular keyed jack for external telephone set use only.
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An 8-pin modular keyed jack for dial (PSTN) lines or 2-wire
leased lines.
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A 25-pin DB-25-S receptacle for DTE interface.
Figure 2-1. Model 3830 Rear Panel