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ETSI PRI
Introduction
ETSI PRI is an adaptation by the European Telecommunications Standards
Institute (ETSI) of the International Telecommunication Union (formerly
known as CCITT) ISDN primary rate recommendations for European users.
To comply with the deployment of DMS-250 switches in Europe, a new
interface was developed.
A limited set of features that currently exist on the American National
Standards Institute (ANSI) PRI interface is supported for ETSI PRI. All
specific database information (for example, tables and their specific fields)
are supported in the same manner for ETSI PRI as for ANSI PRI.
The following features are not supported for ETSI PRI:
Protocol—network mode
In the network mode, the ETSI PRI interface is used as a dedicated access to
the DMS-250 from the PBX customer. The network mode supports the
following functionality:
hotline numbers
VNET access based on NSF=VNET in SETUP
Dialable Wideband Service calls on ETSI PRI
network call transfer
card calls for ETSI PRI originations
ANI in the feature all B-channels busy for ETSI PRI originations
packet mode access connections
location code mapping for ETSI PRI (the location code received in the
cause information element is tandemed as received)
D-channel backup
Enhanced reorigination
call processing—supported functions; table control
Digital Switching Systems DMS-250 ISDN Reference Manual MWC14 (CSP14)
13-1
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