I have had the Sprint Femtocel and the various versions since it has come out several years ago. Really have 0 issues with it. If it appears to "lock up"..dial your voicemail on your phone. You may notice it takes awhile for the airave call tones to come on and then the call to proceed. For whatever reason, once I do this I can immediately hang up after 1-3 seconds of the phone call and it is good to go again.
I would plug the airave into your router...dont put it before it.
Put the Airave into the DMZ on your router if possible.
Verify VPN pass through is enabled, if your router has those settings.
I do not use the security functions that are enabled / disabled on the sprint website.....not sure if that would cause any issues. Actually, i have read various things over the years that they may not even work anyways. Are you really worried about a few calls here and there in the off chance your neighbor MIGHT have sprint? At the very least it would keep the airaves connection active. -- Usenet Block Accounts | Unlimited Accounts
Tried it all!!! i think im just hitting the lottery of bad airave's because sniffing around the web reading about various reviews my problems are the same as everyone else's who had a bad unit, as we speak i have a new one coming in the mail so maybe this will be the chain breaker. When my airave is acting up calling the voice mail it wont even finish the three beeps and the call disconnects. Not like a dropped call it hangs up my phone like the call was ended by the other party. its odd to say the least.