Nortel BayStack 820, Installation And Reference Manual

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Installing the Router
206901-A
2-5
Preparing for an ISDN Connection
The ISDN communications connection provides the link between the router and
the public switched network. Before you connect to an ISDN network, be sure you
meet the following requirements.
North America Requirements
For North American services, make sure you:
• Order the appropriate installation and service from your local telephone
company (Telco).
• If you require Caller Line Identification (CLI) for security, you order the CLI
option from your local carrier.
• Have an ISDN U connection on the wall outlet.
• Order the appropriate Internet access service from your Internet service
provider (ISP), if you require Internet service.
• Know the type of switch at your Telco. The router auto-detects the type of
switch. Knowing the switch type at your Telco can help you verify that the
router detected the correct switch.
• Know the configuration mode of your ISDN line. You can configure the
router in the standard National ISDN-1 mode or in a manufacturer-specific
mode.
• Know the Service Profile Identifier (SPID) number(s) assigned to your
devices. The router usually automatically detects the associated SPID
numbers, but if it does not, you must provide them.
• Know the directory number(s) assigned to your ISDN line.