mmcgarri wrote:I have
- disabled SIP ALG in the modem settings
1) I see you have a Linksys router. You should also try disabling SIP ALG in it:
https://www.youtube.com/watch?v=sPnknsUMdIc.
Ensure your ATA is connected to your Linksys router. Connect all devices to your linksys router.
2) Enable bridge mode in the CODA-4852:
CODA-4852 instructions are the same as CGN3.
Doing this bypasses the firewall and all router features in the CODA-4582, including SIP ALG (which is a good thing), so make sure you're connecting all LAN devices to your Linksys router so that they're protected.
tried port range forwarding
Port forwarding is a security risk and shouldn't be required. Only port forward when all else fails.
Disable all port forwarding.
Tried enabling Stun server
That shouldn't be necessary either. Using STUN is an additional point of failure in the event the STUN server drops.
I realize the following PDF guide is for a different Grandstream ATA model, but some settings should be similar. For those that are, check to ensure that your settings match the ones listed in this PDF guide:
viewtopic.php?f=15&t=18839#p74000.
Remember that proper device reboot order is always modem-->router (wait for Wi-Fi SSIDs to populate first)-->ATA