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119500-A Rev. A
Nautica 4000 Installation Guide
ISDN Ordering Information
This section describes the ordering information you need if you
plan to use ISDN to connect your Nautica 4000 to other devices.
European ISDN Information
If you require ISDN in Europe, do the following:
• If you require calling line identification (CLI) for additional
security, order the CLI option from your ISDN service
provider.
• If possible, order all B channels with the same ISDN
number. This is known as auxiliary working and can speed
up connection times, particularly if you are using all ISDN
channels.
To configure ISDN, refer to the relevant ISDN chapters in the
online documentation on the installation CD.
North American ISDN Information
If you require ISDN in North America, do the following:
• Ensure that each ISDN line is configured in national ISDN
mode or in the manufacturer’s custom mode.
• Find out if your ISDN interfaces are point-to-point or
multipoint as this affects the way the ISDN interface is
configured.
• Ensure that you have the same switch type configured as your
ISDN service provider’s central office. If you are unsure of
the switch type, check with your ISDN service provider.
• Ensure that you are informed of the local directory numbers
assigned to the lines by your ISDN service provider.
• Ensure that you are informed of the Service Profile
Identifiers (SPIDs) for the local directory numbers, also
assigned by your ISDN service provider.