Setup T-288ND as following:
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1."Profile"->"Load"->"0:AS-DL-AT-AUTO"


NT Operation Steps :
====================
1.First of all, user have to install Remote Access Service in NT 4.0 service.
2.The compatible driver for T-288ND for NT4.0 RAS is packed as a .ZIP file
  NDNT40.ZIP. 
  You can extract it by WinZip,then you'll get a file named "NDNT40.INF"
3.If there is a installed modem in "Remote Access Setup" window, remove it.
4.Click "Add" -> "Install Modem" -> "Don't detect my modem" -> "Next" to 
  install new modem model.
5.Click "Have Disk" to use the modem driver that TAINET supports. 
6.Select suitable TAINET modem model to apply and click "Next" to go next 
  configuration.
7.Select needed "COM" port to apply and click "Next" -> "Finish" to complete
  modem selection.
8.In "Add RAS Device", click "OK" to go back "Remote Access Setup" window.
9.This is a important step. In "Remote Access Setup" window, click "Configure.."
  and in "Configure Port Usage" window to enable "Dial out and Receive calls" 
  selection.
10.You can use NT RAS with T-288ND now.