I n t e r n e t _ I S D N
Jeff Frohwein's ISDN Technical Home Page
Schematics
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AT&T NT-1 Application Note
ISDN Hardware
- AVM ISDN Products
- BitSurfer
Terminal Adapter
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UPA U Interface Protocol Analyzer
ISDN Software
- AVM ISDN Products
- UPA U Interface Protocol Analyzer
ISDN Standards
- ANSI Q.931 Switch
Cause Codes (Requires HTML 3.0)
- CAPI 2.0
Reference