How to enable Wake on Ring under Windows XP w/ H50006 H50158

Step 01.
Please make sure your BIOS support ACPI suspend type = S3 (STR)
Please make sure your BIOS support PME Event wake up
Step 02. Open Power Options under Control Panel
Step 03. Enable Hibernation
Step 04. Check your modem driver version is 2.1.93.0 for H50006/H50158 PCI Modem
Step 05. Open hyper Terminal, confirm modem driver w/ AT Command ati3
Step 06. Hibernate PC
Step 07. waiting for incoming ring and then PC will wake up