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56 | Section 5
ere are a number of choices, but the most common are described below.
For Europe and many other parts of the world
ETS 300. is is the very common Euro-ISDN, according to the ETS 300 standard.
♦
For USA & Canada and a few other parts of the world
Natl. I-1. National ISDN-1 is the most common protocol for the USA & Canada and
♦
some other parts of the world. May also be used with lines conforming to National
ISDN-2. See the notes about SPIDs, below.
DMS Cust. For ‘custom functional’ lines on the Nortel DMS-100 switch. See the notes
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about SPIDs, below.
AT&T Cust. is is the AT&T PTP protocol, sometimes called ‘AT&T custom Point-
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to-Point’. is protocol generally does not allow two simultaneous voice calls. For this
reason we recommend that the National ISDN-1 protocol be used if you are on the
AT&T/Lucent 5ESS Telco switch.
If you are in Europe or most of South America, you should choose ETS 300.
If you have Net64 ISDN in Japan you should select INS64.
If you are in Hong Kong you should choose AT&T Cust.
If you are in the USA or Canada, use whichever protocol your phone company has provided. If
you do not know, you may be able to guess...
Guessing the ISDN Protocol setting in Canada & the USA
If you were given only a single phone number and no SPIDs try AT&T Cust
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If you were given 2 SPIDs with the format: 01+7 digit phone #+0 try AT&T Cust ♦
If you were given 2 SPIDs with the format: 01+7 digit phone #+000 or 01+7 digits +011 ♦
try Natl.I-1
If you were given 2 SPIDs with the format: area code+7 digit phone #+4 digits (for
♦
example 0101, 0100, 0111, or 1111) try Natl.I-1. If that fails Try DMS Cust
If you were given 2 SPIDs with the format: area code+7 digit phone #+1 digit (for
♦
example 1, or 0) try DMS Cust. If this fails try Natl.I-1
If you were given 2 SPIDs with the format: area code+7digit phone #+2 digits (for
♦
example 01, 11, 02, or 00) try DMS Cust. If that fails try Natl.I-1
If you were given 2 SPIDs with the format: area code+7digit phone #+3 digits (for
♦
example 000,001) try Natl.I-1. If that fails try DMS-Cust
If you were given a single phone number and a single SPID with the format: of 01+7
♦
digit phone#+0 try AT&T Cust (Do not enter this SPID)
If you were given a single phone number and a single SPID with the format: of 01+7
♦
digit phone#+00 try Natl.I-1. If that fails try AT&T Cust
If you were given a single phone number and a single SPID with the format: of area
♦
code+7digit phone#+4digits (for example 0101, 0100, 0111, or 1111) Try Natl.I-1. If that
fails try DMS