ADTRAN 1200051L6 - Manual (Page 42)

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.