I really regret buying this router. I have a Billion and a TP-Link that let SIP VoIp Passthrough to our PBX server no problem, but when we install the SRP527, no calls come in nor out. I've tried activating the Voice on the DATA VLAN, I've turned off all the firewall settings, internet works fine just not SIP VOIP. We've tried turning on the SIP Application support, no go. We don't know what else to do.
Any assistance will be very much appreciated, otherwise out to ebay it goes, only 4 days old, and two solid days torubleshooting this issue.
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This document is attempt to recreate content of original document created by famous @Patrick Born. Cisco has considered to destroy such valuable document for an unknown reason.Cisco SPA series phones and ATAs can use certificate-authenticated HTTPS (SSL) ...
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