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Chapter 6. Configuration
28
ISU 2x64 Dual Port ISDN Service Unit User Manual 61200051L1-1D
Figure 6-2
VT 100 Configuration Menu Screen
Setting the Switch Protocol
Find out what kind of ISDN switch the local CO is using by asking
the telephone administrator or telephone company representa-
tive. Configure the ISU 2x64 for either Northern Telecom DMS-
100, AT&T 5ESS
¨
, or a switch conforming to the National ISDN-1
standard (usually an AT&T 5ESS, NT DMS-100
¨
, or Siemens
EWSD). For switches outside of North America, use the Euro IS-
DN, VN4, TDX10, TDX1B, KDD, NTT, or NEC switch types.