MagTek Excella STX99875340 - Manual (Page 13)

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SECTION 2. EXCELLA SOFTWARE ARCHITECTURE
(For RNDIS USB Drivers Only)
The architecture of the system is shown in Figure 2-1. Descriptions of the terms and operations
used follow the illustration.
Figure 2-1. Excella Software Architecture
COMPUTER
EXCELLA DEVICE
CONNECTED VIA USB
Wininet.dll
‘C’ API to xfer data to a web
address
XML to Key/Value and vice versa
Application
Excella API MSXML
‘C’ API
USB Protocol
USB Protocol
HTTP: XML
Microsoft Network Stack
RNDIS over USB drivers
USB Driver
Magtek RNDIS Layer
Network Layer TCP/IP
WEB Server
(HTTP and XML parser)