Differing national ISDN standards
ISDN equipment that works in one country
might not work correctly when installed in another country
because of different national standards regarding:
voice encoding-
-law encoding is used in North America and Japan for digital-analog
conversion, while A-law encoding is used elsewhere. Some
devices provide switches for selecting an encoding type; if not,
your device must use the local encoding standard.
communication between terminal equipment and the telephone exchange-
Interoperability of equipment and services varies greatly
because of the variety of services, which services are available
from a local ISDN provider, and how
regulations are interpreted. Check with your local service
provider to ensure that your device's functionality is
supported.
telephone equipment regulation-
Equipment approved for use in one country is not necessarily
approved elsewhere. Check with your local ISDN provider to
ensure that your device is supported on their ISDN
network.
who provides ISDN equipment-
North American customers are expected to provide their own
network termination devices, while elsewhere they are supplied
by the local ISDN provider. Consumer
ISDN devices may thus have different physical
connectors depending on the area where they are intended for
use.
To avoid compatibility problems,
ensure that your ISDN equipment is appropriate for
your local ISDN network.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 22 April 2004