VeriFone VX 520 Specifications Page 135

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PERFORMING DOWNLOADS
Back-to-Back Application Downloads
VX 520 R
EFERENCE GUIDE 135
Back-to-Back
Application
Downloads
This section provides the hardware and software checklist needed for back-to-
back application downloads. The procedure for back-to-back terminal downloads
is also discussed.
Hardware Checklist
Software Checklist
The correct serial cable connects the RS-232 ports of the sending and receiving
VX 520 terminals (refer to Cable Connection for Back-to-Back Application
Downloads).
Verify that the RAM size on the receiving terminal is large enough to receive files
uploaded from the sending terminal. If the RAM on the sending terminal is 512 KB,
the RAM on the receiving terminal must be at least 512 KB.
The firmware versions of the sending and receiving terminals must be identical or
very similar.
One or more complete and authenticated application programs are stored in the
GIDs 1
15, RAM or flash of the sending terminal. In this type of operation, all files
stored in application memory of the sending terminal download to the receiving
terminal.
Before initiating the download procedure, remember to select Group 1 as the
target file group on both the sending and receiving terminals. The required
terminal manager and file group passwords must also be available to make the
required terminal manager menu selections on both terminals.
The current CONFIG.SYS variables, date and time, and other terminal
configuration settings on the sending terminal are those downloaded to the
receiving terminal. Ensure that the desired settings are correct.
All signature files required to authenticate the application files being downloaded
to the receiving terminal are present in the RAM or flash file system of the sending
terminal.
The certificate tree of the sending and receiving terminal must be synchronized.
That is, there can be no more than one revision difference between the certificate
data currently stored in the memory of the sending and receiving terminals.
If application files are downloaded to the receiving terminal in previous operations,
use the terminal manager menu options to clear the RAM and flash file systems of
the receiving terminal before you initiate the back-to-back download procedure.
This ensures a clean download.
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