Passive or battery back-up devices

[voipvoxer]

Hi,

I have been using Sipura 3K, and is quite satisfied. Would like to know if there are any equivalent devices(ATA, hardphone etc), that does not require active power or is back up with batteries on possibly power source failures?

Regards

[PhoneBoy]

You'd need battery backup for more than just the ATA. You'd also need battery backup for the router, DSL/cable modem, etc.

[voipvoxer]

Hi PhoneBoy,

thanks for your reply. I agree with your point regarding redundancy/backup on all possible point of failure, but I am concerned with the ATA or hardphone only at the moment.

There are work-arounds/solutions, like UPS, available for the rest of the devices which I have yet to explore or they might not be an issue to me.

Regards

[DracoFelis]

Originally Posted by voipvoxer

There are work-arounds/solutions, like UPS, available for the rest of the devices which I have yet to explore or they might not be an issue to me.

If a UPS is a "work around" for your other equipment, why not use it as the "work around" for the SPA-3000? I know from first hand experience, that an SPA-3000 is happy to run on UPS power (i.e. plug the adapter's "power suppy"/"wall wort" into a UPS, and be happy)!

In fact, I have my DSL modem, my router, my SPA-3000, and my wireless phone "base station" all on a couple cheap UPSes. That approach gives me a fair number of minutes of VoIP (even when we are talking on the wireless phones, since the wireless "base station" is also UPS backed up) whenever the power goes out. In particular, those brief (few second) power outages (that are common where I live) don't even cause a glitch with my phone (even when I'm chatting on "the VoIP line").

NOTE:
Since the "wall wort" (power supply) that the SPA-3000 uses outputs DC power (I forget which voltage, and I'm not near the device to check), you could (in theory) power the SPA-3000 directly from DC battery power (of the correct voltage). And that would likely make more efficient use of your battery power than the UPS=>WallWort=>SPA-3000 approach I'm taking.

But OTOH, getting a cheap UPS is EASY TO DO, and (in my experience) the SPA-3000 is quite happy to run off of UPS power (at least as long as the UPS batteries hold up). And, has already been pointed out, you can't very well run a SPA-3000 without internet. So if you are going to provide "backup" for the SPA-3000, you already have to "backup" your "network equipment" (internet access) as well. And so IMHO you might as well just put them all on a UPS (or multiple UPSes, if you want to split up the equipment, to get longer UPS battery time)...

[voipvoxer]

Hi DracoFelis and All,

thanks for your comments.

I think I need to clarify:-

1) modem, routers and other devices are not my concern or scope of responsibility at the moment
2) my main consideration are ATAs and hardphones etc
3) all devices are not for my personal use
4) I have little or no control for what power backup, if any, on the routers, modems etc.

Hope I don't sound offensive, which is not my intention.

Regards

[mberlant]

Given that you have no control over the router, etc., it would be foolish to back up your SPA if nothing else is protected.

[markosjal]

As a Suggestion, I saw an interesting gadget in a TelMex Store (Mexico) . It is a UPS for a cordless phone. What it does is it connects to an existing cordless phone and charges a backup battery while power is available. It then provides DC power to the cordless phone when the AC mains fails. Small unit, no voltage inverter involved just a battery! I am certain there are many uses for it.