APPENDIX A: Important ISDN Issues
89
Appendix A: Important ISDN
Issues (For U.S. Users Only)
A.1 Which ISDN Service Should You Order?
Your telephone company can offer one or more of the following ISDN switch protocols:
• National ISDN-1 (NI-1)
• AT&T Multipoint (5ESS)
• AT&T Point-to-Point (5ESS with no SPIDs)
• Northern Telecom DMS-100 Custom (DMS-100)
The Ethernet Extender operates with all of the above ISDN services. However, National ISDN-1 is
recommended, as it is common to the three North American switches:
• AT&T (5ESS)
• Northern Telecom (DMS-100) and
• Siemens (EWSD)
A.2 Ordering ISDN
To order your ISDN line:
1. Request the type of ISDN service available from the telephone company’s ISDN Ordering Center.
2. Provide the required provisioning information to the telephone company.
3. When the telephone company installs your ISDN line, obtain the following information:
• ISDN switch protocol.
• ISDN telephone numbers (two telephone numbers are highly recommended)
• ISDN Service Profile Identifier (SPID) numbers (preferably 2 SPIDs)
NOTE
Verify the SPIDs and the telephone numbers with the telephone company. An incorrect
telephone number or SPID number could prevent you from accessing your ISDN line.
Summary of Contents for LB3104A series
Page 3: ......
