Cisco SPA 525G2 IP Phone

[vangersh1]

Hi all,

I just got myself a Cisco SPA 525G2 -5Line ip phone to configure which is totally not working.

I'm configuring it in SIP mode with the a static IP address.

The following have all been configured and rechecked :

STUN Server:
SIP Parameters
SIP Port number
Proxy:

Subscriber Information

When all these configuration are saved .. I still get the following error message :

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Registration State:    Failed - Not Reachable

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Can I kindly get help from or tips in configuring this? Thanks

Sean