Adsl connection failure code list

First, is the RasPPPoE software correctly installed?
Error 602 The port is already open
Problem: the dial-up network cannot be connected due to a device installation error or in use.
Cause: RasPPPoE is not fully and correctly installed.
Solution: uninstall and reinstall any PPPoE software.

Error 605 Cannot set port information
Problem: the port cannot be set for the dial-up network due to device installation errors
Cause: RasPPPoE is not fully and correctly installed.
Solution: uninstall and reinstall any PPPoE software.

Error 606 The port is not connected
Problem: the dial-up network cannot connect to the required device Port
Cause: RasPPPoE is not completely and correctly installed. connection line faults and adsl modem faults
Solution: Uninstall any PPPoE software, reinstall it, and check the network cable and adsl modem.

Error 608 The device does not exist
Problem: the device connected to the dial-up network does not exist.
Cause: RasPPPoE is not fully and correctly installed.
Solution: uninstall and reinstall any PPPoE software.

Error 609 The device type does not exist
Problem: the type of the device connected to the dial-up network cannot be determined.
Cause: RasPPPoE is not fully and correctly installed.
Solution: uninstall and reinstall any PPPoE software.

Error 611 The route is not available/612 The route is not allocated
Problem: the dial-up network connection route is incorrect.
Cause: the RasPPPoE is not fully and correctly installed, and the ISP Server is faulty.
Solution: uninstall and reinstall any PPPoE software, and call the ISP to ask

Error 617 The port or device is already disconnecting
Problem: the device connected to the dial-up network has been disconnected.
Cause: RasPPPoE is not completely and correctly installed. ISP Server faults, connection lines, and adsl modem faults
Solution: uninstall and reinstall any PPPoE software. Call the ISP to check the network cable and adsl modem.

Error 619
Problem: unable to establish a connection with the ISP Server
Cause: adsl isp Server fault and ADSL Telephone Line Fault
Solution: Check whether the ADSL signal lights are correctly synchronized. Call ISP to ask
Error 621 Cannot open the phone book file
Error 622 Cannot load the phone book file
Error 623 Cannot find the phone book entry
Error 624 Cannot write the phone book file
Error 625 Invalid information found in the phone book
Problem: Windows NT or Windows 2000 Server network RAS network component failure
Cause: Uninstall all PPPoE software and reinstall the RAS network component and RasPPPoE.