Bay Networks 4000, Справочное руководство

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ISDN Setup
118814-D Rev. 00 10-5
MSN
Multi Subscriber Numbering (MSN) is a service you buy from
your local ISDN service provider. MSN allows the user to specify
which service an incoming call will use, based on the phone
number dialled by the calling party.
MSN Explained
When an ISDN call is received, the router is presented with two
numbers: the calling line identifier (CLI), which is the number of
the caller, and the number which is being called (called number).
When you buy ISDN MSN from your service provider, your
original telephone number becomes 10 telephone numbers. For
example, if your original telephone number was 123450, the
number is now broken down into the following numbers:
Now, when an ISDN call is received by the Nautica router, it is
presented with the CLI of the caller and a number representing
the MSN required by the caller. The MSN portion of this
information changes depending on the service provider you are
using. Some providers will show only the MSN (0 to 9), others
will show two digits (00 to 09), and still others will show more
digits.
It is important that you contact the provider of your ISDN service
to determine how they present MSN. This information is
necessary when you setup your own MSN numbers. Alternatively
you can use Nautica Log to display CLI and MSN information.
Nautica Log is explained in more detail in
Chapter 20 .
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