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Mokena, IL
reply to Melissa2009B

Re: [Connectivity] Trying to use PhonePower on Comcast HSI - not

Your problem is most likely in the router settings. Here's a list of settings that PhonePower says you need:


Without setting these up I'm guessing you're going to see choppy quality. Since you're on a modem / gateway there's no way to put the phone device in before the router, so you'll have to go in and set up the port forwarding to send the proper ports to your PhonePower box.

Hope that helps!
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Denver, CO

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I'm not sure how to do that myself. I guess Comcast might have really needed to send a tech over to install the Voice device.

I just dialed *** and got a busy signal.

Oh, I just remembered how to login as admin to the gateway.

Here's a screen shot. Does this help?

As for setting up that port forwarding stuff, I have NO idea what I'm doing and don't want to risk winding up with no phone or internet?

Is this box a Grandstream?