I have 2 cisco ATA's, 2 different models. Both do the same thing. Sometimes it rings, then sometimes it doesn't. I've factory reset them countless times. I've setup the extension on a softphone and it has no issues ringing. Really holding me back from production as I need this to work for overhead paging before I can pitch this to some clients. Thanks in advance!
Cisco ATA issues. Sometimes they ring, sometimes they don't. I can always dial out though.
- Thread starter pnwitguy
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It could be a NAT keep alive issue. Are the ATAs sending keep alive packets for example OPTIONS pings? Also check the frequency, it's no good sending a keep alive every 30 seconds if your router closes the NAT hole after 20 seconds! Different routers keep NAT holes open for different amounts of time, the normal UDP default is 180 seconds.
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