Intel ER8100STUS - Express 8100 Router, Справочное руководство

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Reference.bok : Chapter04 29 Wed Apr 22 10:58:08 1998
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ISDN Standards
ISDN Services
ETSI
The European Telecommunications Standards Institute (ETSI) was set up to pro-
duce European Telecommunications Standards (ETS). Some of these standards
have been designated as NETs (Normes Européen de Télécommunications)
which specify the connection requirements for terminal equipment. The most im-
portant are NET 3 and NET 5. These standards are for the type approval of equip-
ment for connection to ISDN BRA and PRA respectively.
EuroISDN and National
ISDN-1
In 1989, European network operators signed a Memorandum Of Understanding
(MOU) to enable the standardization of services and user-network interfaces, and
international connectivity.
A variety of national standards currently exist for ISDN in Europe. These are
gradually being replaced by ETSI standards to provide a European-wide service.
The situation is similar in the USA, a similar state of affairs exists resulting in the
National ISDN-1 standard.
ISDN protocol variants
supported
A number of country-specific variants of ISDN are currently in use around the
world. The ISDN variants supported by the Intel Express 8100 Router are:
■
Euro ISDN (ETSI)
EuroISDN is used in many countries throughout Europe and Asia Pacific
and in Australia.
■
National ISDN-1 (USA)
■
National ISDN-2 (USA)
■
AT&T ISDN (USA)
■
Nortel DMS-100 (USA)
■
NTT (Japan)
■
KDD (Japan)
Service Profile IDs
(SPIDs)
Service Provider IDs (SPIDs) are used by USA ISDN variants only and are used
to identify to the switch the ISDN services provisioned for the terminal. The
SPID is registered at the switch during link establishment.
Network providers which supply NI1 (National ISDN-1) or AT&T ISDN in the
USA require the use of SPIDs for identification of the services provided. For
Northern Telecom DMS-100 ISDN switches, a SPID is required for each B-
channel of the BRI. That is, if both B-channels of the BRI are to be used, two
SPIDs are required.