Switch Types

Your ISDN service is provided through an ISDN switch at your telephone company. Select the switch type your telephone company uses at the other end of the telephone line.

ISDN Switch

Description

National ISDN-2

This is the default. Select this option if "National," "N1," "N-1," or similar words appear in the information you are given.

Northern Telecom DMS-100

Select this switch type if "Northern Telecom DMS-100," "Northern," or "DMS-100" appears without NI-1.

Lucent 4ESS

Select this switch if "AT&T 4ESS," or "4ESS" appears.

Lucent 5ESS

Select this switch type if "AT&T 5ESS," "AT&T," or "5ESS" appears without NI-1.

European ISDN Net5

This is the standard PRI switch type used in Europe.

Japan NTT

This is a Japanese switch type.

Japan KDD

This is a Japanese switch type.

EuroISDN

This is a European switch type.

Note - If you do not know which ISDN switch type to select, contact your telephone company for clarification.