Hardware manual

80-001113 SysLINK Administrator’s Guide Page 25
 “Perform FirstData Buypass processing (multi-threaded)” support Buypass mode
packets which have a binary length included. These are sent to the host in 8-bit raw
mode.
 “Strip parity from host response packets” Some hosts respond with the parity bit set.
Selecting this option strips the parity bit from the bytes before transmitting them out
the local port interface.
“Initial ENQ Generation” selects whether the host or the gateway will generate the initial
ENQ to the terminal port.
“Packet Delivery” selects parameters for communicating with the host.
“Terminal Packet Format” selects how the gateway determines the end of the incoming
packet.
“LRC Calculation for Terminal-to-Host Packets” and “LRC Calculation for Host-to-Terminal
Packets” enable the gateway to use the LRC’s provided in the packets or to locally calculate
them either going to the host or to the terminal.
(Secured) Converted POS Terminal Protocols
In the case of Simple POS, the communication supported by the original terminal (perhaps a
dial-up or serial based device) and the IP-based host generally match. But in some cases an
IP-based host does not communicate exactly like its dial-up counterpart. The gateway is
capable of converting standard POS terminal packets into network packets that are suitable
for use with several types of network transaction authorization protocols. In virtually all
cases, the gateway does not modify the contents of the payload of the transaction, but is
simply “re-wrapping” the transaction in a different communication protocol.
A wide variety of Converted POS protocols are supported (see partial list below). Which
protocol is appropriate for your application is determined by the device you are using –
which determines how the gateway communicates with the local device – and by the host
you are using – which determines how the gateway communicates with the host, converting
the data in both directions.
After selecting “SSL-Secured Protocols for Internet Connections”, select the appropriate
protocol from the list. Some protocols require additional information. If this is the case,
when you select that protocol an additional selection area will be visible under the “POS
Terminal to Network Host Conversion Settings” section.