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Resolution
Procedure
Determine which parameter is null and set a value.
Need phone certificate
Problem description
The value of system parameter NVVPNAUTHTYPE is "5" or "7" indicating RSA signature
authentication, but a device certificate is not stored in the phone.
Resolution
Procedure
Use SCEP to provision a digital certificate in the phone.
Invalid Configuration
Problem description
A configuration problem not covered by the preceding five messages.
Resolution
Procedure
Review settings and reconfigure values as needed.
No DNS Server Response
Problem description
The DNS server is out of service.
Need phone certificate
March 2015
VPN Setup Guide for 9600 Series IP Telephones
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