Wavenet Technology Pty Ltd. BM3800D Benutzerhandbuch
Appendix E – Message Routing and Migration____________________ Boomer-III User Manual & Integrator’s Guide
Copyright Wavenet Technology © October 2003
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BM310012WT04
Appendix E - Message Routing and Migration
This section provides a brief overview to message routing across the
various releases of DataTAC
various releases of DataTAC
®
systems. As the developer and user
communities become more international in scope, successful
applications will be distinguished by their portability across existing
DataTAC networks.
applications will be distinguished by their portability across existing
DataTAC networks.
Message Routing
Three versions of DataTAC systems are in operation worldwide, as
noted by where they are currently implemented:
Three versions of DataTAC systems are in operation worldwide, as
noted by where they are currently implemented:
DataTAC 4000 systems (North America)
DataTAC 5000 systems (Asia-Pacific and Middle East)
DataTAC 6000 systems (Europe)
The architectures of the three systems are basically alike. Although
they support different link layer protocols, the systems the systems
differ mainly in their message header syntax.
The distinction between host communications and peer-to-peer
messaging is also important. Separate DataTAC protocols support each
of these application models. The primary host communications mode is
Standard Context Routing (SCR), also known as fleet mode. Another
application mode is DataTAC Messaging (DM), which handles
messaging among terminals (subscriber units).
SCR and DM are the common sets of rules that describe how to format
message headers on DataTAC systems. Although the header format
differs slightly among DataTAC 4000, 5000, and 6000 systems, the
functional concepts of operation are the same. The exact SCR and DM
syntax for each system is available in their separate Host Application
Programmer’s Manuals.
Note: In this section “host” refers to the network fixed host.
“Terminal” refers to a subscriber device.
they support different link layer protocols, the systems the systems
differ mainly in their message header syntax.
The distinction between host communications and peer-to-peer
messaging is also important. Separate DataTAC protocols support each
of these application models. The primary host communications mode is
Standard Context Routing (SCR), also known as fleet mode. Another
application mode is DataTAC Messaging (DM), which handles
messaging among terminals (subscriber units).
SCR and DM are the common sets of rules that describe how to format
message headers on DataTAC systems. Although the header format
differs slightly among DataTAC 4000, 5000, and 6000 systems, the
functional concepts of operation are the same. The exact SCR and DM
syntax for each system is available in their separate Host Application
Programmer’s Manuals.
Note: In this section “host” refers to the network fixed host.
“Terminal” refers to a subscriber device.
Network Link Layers
Before a message can be routed, it must contain a header and be
wrapped in a link layer protocol supported by the DataTAC network.
Not all link layer protocols are supported by each DataTAC network.
The X.25 protocol is common to all three systems and supports both
PVC and SVC host connection line types. X.25 is a popular choice for
developers looking for a worldwide connectivity solution.
Other supported protocols include:
Before a message can be routed, it must contain a header and be
wrapped in a link layer protocol supported by the DataTAC network.
Not all link layer protocols are supported by each DataTAC network.
The X.25 protocol is common to all three systems and supports both
PVC and SVC host connection line types. X.25 is a popular choice for
developers looking for a worldwide connectivity solution.
Other supported protocols include:
DataTAC 4000 system
X.25, TCP/IP, LU6.2, leased line,
dial-up, RF-Loopback
DataTAC 5000 system
X.25, TCP/IP, SLIP
DataTAC 6000 system
X.25