RUT240 & VOIP Phones

Hello,

I am reaching out to you all because I’m having issues with the following setup. I am using a RUT240 (carrier AT&T) and connecting it to an 8-port POE D-LINK (DGS-1008P) switch. From there, I am connecting two VOIP phones to the D-LINK. The IP phones get a dial tone, but we can’t dial out or receive phone calls. I checked the firewall rules on the RUT240, and they are set to default. I’m wondering if anyone has ideas on how I can get the two VOIP phones to work properly. When the VOIP phones are connected to the local network, they work perfectly fine.

Thank you in advance for your help.

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