P2302R-P1C Support Notes
1.Serial number of the device.
2.SIP Call server type and vendor.
3.Your device firmware version and romfile with password.
4.Detail information what you have tried to resolve the problem.
I suspect there is a hardware problem with my ZyXEL Device what should I do?
Please follow the troubleshooting section in the user’s guide for brief hardware troubleshooting and diagnostic tips. If you are sure there is a hardware problem after following the hardware diagnostic tips in the user’s guide. Please contact your ZyXEL local vendor to send the device in for RMA service.
Trouble Shooting
Unable to Get WAN IP from ISP
My ZyXEL Device can not get an IP address from the ISP to connect to the Internet, what can I do?
Currently, there are various ways that ISPs control their users. That is, the WAN IP is provided only when the user is checked as an authorized user. The ISPs currently use three ways:
1.Check if the 'MAC address' is valid
2.Check if the 'Host Name' is valid, e.g., @home
3.Check if the 'User ID' is valid, e.g.,
If you are not able to get the Internet IP from the ISP, check which authentication method your ISP uses and troubleshoot the problem as described below.
1. Your ISP checks the 'MAC address'
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