3Com Router User Manual

POS Access Service Configuration97
■Avoiding the dial-up time problem and fast connecting to the transaction 
processing center.
■Reducing the number of occupied communication links, hence saving the 
communications cost greatly.
■Avoiding the problem of service queuing as it is as though each POS terminal 
device enjoys a dedicated line (except the networking is comprised of the POS 
terminal and the POS concentrator). 
■The POS access feature can be combined with other services of the router, i.e.,...

98CHAPTER 7: POS TERMINAL ACCESS SERVICE
If the FCM interface is used as POS access interface undo modem cannot be 
configured. If another interface is used as the POS access interface undo modem 
must be configured.
Since POS access does not support flow control, the interface should be 
configured with the flow-control none command.
If the POS access port is connected to the POS terminal in asynchronous mode, 
and the POS asynchronous port does not send a DSR-DTR signal, it is necessary to 
configure...

POS Access Service Configuration99
POS access does not support flow control, therefore, the interface should be 
configured with the flow-control none command.
5Configure POS Multi-Application Map
POS multi-application is a kind of POS access function, which sends the packets 
from a POS terminal device to different POS applications according to the packet 
destination addresses. For TCP/IP connection, an application is marked by two 
parts, IP address and port number, that is, the different applications...

100CHAPTER 7: POS TERMINAL ACCESS SERVICE
implemented otherwise, the system will prompt as follows to indicate that the 
configuration has failed: 
App-state is wrong.
7Set the parameters of FCM used during Modem negotiation
In the POS access application, the Modem on the FCM card usually acts as the 
called party, and the Modem embedded in the POS terminal acts as the calling 
party. In the Modem communication, the POS terminal originates a call after the 
called party detects the calling signal, it...

Typical Configuration Example of POS Access Service101
Typical Configuration 
Example of POS 
Access Service Configuration Example when the Router is Located at the FEP Side in 
TCP/IP Mode
I. Networking Requirements
Three POS terminals access the Router A located at the FEP side through the FCM 
card and connect to UNIX A (10.1.1.1) and UNIX B (10.1.1.2) in TCP/IP mode.
II. Networking Diagram
Figure 42   Networking diagram when the router is located at the FEP side in TCP/IP mode
III. Configuration...

102CHAPTER 7: POS TERMINAL ACCESS SERVICE
9Configure POS access interface FCM2
[Router] interface fcm2
[Router-FCM2] async mode pos 3
Configuration Example when the Router is Located at the FEP Side in 
Asynchronous Connection Mode
I. Networking Requirements
Three POS terminals access the Router A located at the FEP side through the FCM 
and connect to UNIX A (10.1.1.1) and UNIX B (11.1.1.1) in asynchronous 
connection mode.
II. Networking Diagram
Figure 43   Networking diagram when the router is located...

Typical Configuration Example of POS Access Service103
[Router-FCM2] async mode pos 3
9Configure Async 0 to operate in POS application mode.
[Router] interface async 0
[Router-Async0] undo modem
[Router-Async0] flow-control none
[Router-Async0] async mode posapp
10Configure Async 1 to operate in POS application mode.
[Router] interface async 1
[Router-Async1] undo modem
[Router-Async1] flow-control none
[Router-Async1] async mode posapp
Configuration Example when the Router is Located at the Commercial...

104CHAPTER 7: POS TERMINAL ACCESS SERVICE
[RouterA] interface async 1
[RouterA-Async1] undo modem
[RouterA-Async0] flow-control none
[RouterA-Async0] undo detect dsr-dtr
[RouterA-Async1] async mode pos 2
fConfigure POS access interface 2.
[RouterA] interface async 2
[RouterA-Async2] undo modem
[RouterA-Async0] flow-control none
[RouterA-Async0] undo detect dsr-dtr
[RouterA-Async2] async mode pos 3
gConfigure the route to Router B (take the static route as example).
[RouterA-Async2] quit
[RouterA] ip...

III
INTERFACE
Chapter 8Interface Configuration Overview
Chapter 9Configuring LAN Interface
Chapter 10Configuring WAN Interface
Chapter 11Configuring Logical Interface 

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