2-6 Netopia ISDN Modem User’s Guide

SPID formats

The exact format of ISDN SPIDs is sometimes a point of confusion. This is because several formats exist, and some formats allow variations.

The table below displays the general SPID formats for some of the types of ISDN switch configurations supported by the Netopia ISDN Modem. The formats shown are a subset of possible SPID formats, but in most cases they should work.

In the following table, xxxxxxx represents the directory number assigned to your ISDN line, and yyy represents your area code.

Switch

SPID format

 

 

 

 

AT&T 5ESS cus-

01xxxxxxx0

tom (multipoint)

 

 

 

National ISDN-1

 

on AT&T 5ESS

01xxxxxxx00

(multipoint)

 

 

 

National ISDN-1

yyyxxxxxxx100 and yyyxxxxxxx200

on Northern

or

Telecom DMS-100

yyyxxxxxxx0100 and yyyxxxxxxx0200

 

 

Note: AT&T 5ESS custom point-to-point switches have no SPIDs and are not represented in the table above. However, this type of switch configuration is supported by the Netopia ISDN Modem.

Example SPIDs If your ISDN line is controlled by a DMS-100 using National ISDN-1, and your directory numbers are given as (415)234-5678 and (415)234-5679, your SPIDs are 4152345678100 and 4152345679200. Alternately, your SPIDs can be 41523456780100 and 41523456790200.

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Farallon Communications 412, 612 manual Spid formats