NETGEAR XM128 ISDN Reference Manual page 149

• Make sure the telephone company provides you with:
– The switch type information
Ask the telephone company representative which switch type is available in your area.
Select the appropriate worksheet in this appendix and complete the information to use as a
guide. The three types of worksheets provided are AT& T 5ESS, Northern Telecom
DMS-100, and Siemens EWSD.
– The switch protocol
Ask the telephone company representative which switch protocol you will be using to
communicate with the telephone company switch.
– The SPID numbers
Determine the number of SPID numbers your configuration requires and request that
quantity.
– The Directory numbers
In most cases, you will have two directory numbers. Determine and request the
appropriate quantity.
ISDN Reference
Reference Guide for the Model XM128 ISDN Digital Modem
G-5