7POS TERMINAL ACCESS SERVICE
This chapter contains information on the following topics:
■POS Access Service Overview
■POS Access Service Configuration
■Display and Debug POS Access
■Typical Configuration Example of POS Access Service

POS Access Service

Overview Point of Sale (POS) service is a type of smart card service widely used in shopping
malls, gas stations, and so on. It links the POS terminal device at the commercial
client (located in shopping mall or gas station) to the bank card accounting system
to provide service.
The POS terminal device is widely used in the fields of commerce, finance,
taxation, and so on. The earlier POS terminal devices worked independently in
different banks, and they could not communicate with each other. The technology
based on a shared POS access service has solved this problem and makes it
possible to use different bank cards on the same POS.
The POS terminal is connected to the transaction center in two ways, namely,
through dial-up POS access and POS network access.
Dial-up POS Access
In the dial-up POS access mode, after responding to the smart card, the POS
terminal device will synchronously or asynchronously dial up with the built-in
modem. Thus the POS terminal device at the commercial client accesses the bank
card accounting system. In this case, the 3Com Router series providing POS access
service can be placed at the commercial client side. The routers can be connected
to the front end processor via the WAN. They can also be connected to the front
end processor of the bank via the asynchronous interface or Ethernet port.
The following figure shows the networking diagram of the typical dial-up POS
access.
Figure 39 Dial-up access when the POS access router is located at the FEP side
POS terminal
PSTN
Quidway
FCM
UNIX FEP
Ethernet
interface
Serial port
Router