The gateway specifically requires functionality and dictionaries to support
the legacy EDI standards, X12 and/or
EDIFACT. Multinational companies may support both standards, a
U.S.-based company may support only X12, and
a non-U.S. company may support only EDIFACT.
The gateway also requires functionality for "legacy" VAN communications methods.
Network Service Provider -Because
the internet was not secure and widely available until recently, and
point-to-point network connections were expensive to support, legacy EDI has
used Value-Added Network (VAN)
services for over 30 years.
- Digital technology has only recently become
available; legacy communications with EDI VANs uses
and telephone lines. Most connectivity is dial-up, with
used only by the largest companies.