This can be done as a raw command from within TraPr, With Hyper Terminal in windows, or from within the free WinPop application that can be obtained from DataCap Systems [color=blue:w6yet9w5][u:w6yet9w5][b:w6yet9w5]http://www.dcap.com[/url:w6yet9w5%5D%5B/b:w6yet9w5%5D%5B/u:w6yet9w5%5D%5B/color:w6yet9w5%5D

To do the actual batch number change, you need to type in AT&UB7
followed by a space, followed by the batch number, followed by a space and a star 4 times,
so it would end up, for batch number 1234, to look like this;
AT&UB7 1234 * * * *
Then send the command to the modem.