User Manual

Boomer II User Manual & Integrator’s Guide
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Message Routing and Migration
BM210012WT09 91 Wavenet Technology
SCR Message Types
Fleet mode of communications uses three types of messages:
q Commands / Host Requests (host-to-network)
EXAMPLE: Send Message #1 to LLI 87654321
q Responses / Host Confirmations (network-to-host)
EXAMPLE: Message #1 to LLI 87654321 was ACKed
q Events / Mobile Information (terminal-to-network-to-host)
EXAMPLE: Message received from LLI 12345678
A fourth type of message, the status message, is allowed on DataTAC
4000 and 5000 systems, but it is not supported on DataTAC 6000
systems.
Each message type must include a unique header; small differences
within each type of header exist among the systems. The charts
graphically compare the headers for each system.
Highlights of SCR Differences
The following topics explain:
q Which system or systems implement a particular function.
q What this function does and how it varies by system.
q How to migrate an application from one system to another.
Nomenclature
When migrating applications, use the correct message type codes.
Because DataTAC systems were originally designed for unique
markets during different development periods, each shows its separate
lineage and is described using inconsistent terminology. For example,
this occurs at the beginning of the SCR header, where the code
designating the message type varies by system, as shown in the
following table.
Message Type
(direction)
DataTAC 4000
System
DataTAC 5000
System
DataTAC 6000
System
Command
(host-to-network)
IB
(inbound basic)
HR
(host request)
HR
(host request)
Response
(network-to-host)
AB
(acknowledgment basic)
HC
(host confirmation)
HC
(host confirmation)
Event
(terminal-to-host)
OB
(outbound basic)
MI
(mobile information)
MI
(mobile information)
Note: The DataTAC 4000 system designates the direction of the
command message as inbound from the host to the network and
outbound from the network to the host (opposite from current industry
terminology).