5
« on: 2019-02-02, 07:35:21 »
Tnx once again, Mitch. This blind dog finally found a bone. I figured out how to change the ports - of course, all as you described - and made the changes to the Radio unit, the remote router's port forwarding, and the Control unit. Connected!
I couldn't set up the Control box in the DMZ, as my Arris Comcast router requires me to enter both an IP4 and IP6 address for the "computer" placed in the DMZ. The Belkin router at my remote site is not so picky. The Arris assigns both addresses to PCs, laptops, etc. However, my networked printers and, alas, the Control box, only get IP4 addresses. So the change wouldn't save.
Under the Triple Play services package we have, I don't think I can replace the Comcast router with anything that wouldn't have the same issues. I believe the Comcast voice service requires either the rented router or one of the other routers Comcast lists on its website as compatible, for example, the Moto MT7711. We could buy the Moto, but I suspect it will have the same issues re: SIP.
I agree with you that Comcast is ripping us all off. It's not just the rented equipment, I suspect it's also mucking with SIP in favor of its own services. My system worked fine with the default ports of 13000-01-02 until yesterday. Did it detect the use of those ports for SIP and start blocking me? We will see how long it works with the new ports; at least I'll know what my first step should be in that event.
Our Comcast contract is up before the end of this year. It's likely we'll just use Comcast for internet access thereafter. That should give us a wider range of modems/routers from which to choose, as we no longer would need voice.
Yeah, they didn't cover this topic in law school with me either ;-). A large part of the frustration is simply not understanding how everything works, which makes t-shooting that much more difficult. My knowledge of networking fundamentals was rapidly exhausted during this endeavor. I still don't know exactly what SIP is, but that's another topic for me to tackle ;-).
Many thanks for your ongoing support and patience. You saved me a huge trip, and pointed me to the steps that I was too inexperienced to recognize as the right way to go about this.
73 Paula k9ir