Packet communications optimization tool
The "packet communications optimization tool" is a tool to optimize the settings of a PC, when packet communications are performed. In order to utilize the communication performance of packet communications to the maximum, it is necessary to set the communications with this software.
The "packet communications optimization tool" sets the RWIN (receiving buffer size) value to the following optimal values.
|64,240||au W series mobile phone|
- *A change of registry is not required for MTU, because each OS is automatically set to 1500 by default.
- *Since the recommended values differ by the communication environments (ISDN/ADSL, etc.) except for au packet communications, it is necessary for the customer to change the value as required.
Windows® 98 Second Edition
|Hard Disk Capacity||10MB or more
How to apply
MTU (IP Packet Size)
"MTU" is an abbreviation for "Max Transfer Unit," and is the parameter to determine the packet size which can be sent at once. If this value is set too low, an excessive number of packets are required to send the same size of data, and if set too high, the performance worsens when exchanging a large amount of fine detailed data.
The transfer of data can be performed smoothly, by setting the size of the MTU to the most suitable value according to the network environment being used.
RWIN (receiving buffer size)
"RWIN" is the abbreviation for "Receive Window Size," and is the parameter to determine the capacity (buffer) which temporarily accumulates the transmitted data in a personal computer.
The sender of the data will continue to transmit the data, until the RWIN buffer on the receiving side becomes full. When the RWIN buffer becomes full, the receiver of the data will notify the sender that the data reception is completed. If this value is set too low, the frequency of transmissions between the sender and receiver increases and the performance worsens, and if set too high, the communication conditions worsen and trouble will occur if the data could not be received normally.