Help connecting a Grandstream HT702 to an AirPort Extreme.
I've bought a Grandstream HT702 analog telephone attach so that I can use voip for telephoning.
My DSL modem and the Grandstream each have only single ethernet connections. So the only connection configuration that I can use is modem<->AirPort Extreme<->Grandstream.
In this configuration, I can see the Grandstream in my internet browser when I enter its IP address, 10.0.1.14. But nothing seems to get through to the Grandstream. It can't be seen by the voip company an their end, and it never gets registered.
I know that the problem is not the Grandstream, because when I connect it directly to the modem it works fine and I have the full voip capability. But that's only a test, I can't leave it plugged into the modem because than I loose my wifi.
I've seen a conversation that's several years old about a similar problem that was resolved by using the AirPort Utility to set up a DHCP Reservation. I've tried it and it's not solving the problem for me.
AirPort Extreme-OTHER, Mac OS X (10.6.8)