atcomsystems.ca/forum Forums VOIP Phones & IP PBX VoIP & Cloud Phones, Hosted PBX, General IP Phones Voip to analog circuit

Does anyone know of a voip product that exists that you can use voip to simulate an analog ring down type of circuit?

My customer has been paying for a ring down type of circuit through the phone company. At building 1, they pick up the line and hear the intercom tone of the phone system at building 2. At Building 2, they can pick up the line and hear the intercom tone of building 1.

The circuit is hooked into the analog single line port of both systems. This works well for the occasional use of the circuit for page pickup and direct intercom calling. They can just as easily call the building talk to the receptionist and be transfered to whomever they need.

They would like to stop paying the phone company. They do not want to buy new phone systems that have voip circuits. A voip solution within the phone brand for one or two circuits is too prohibitive. We can't get an aerial or burial to the buildings due to logistics. Can't do a wireless/microwave solution.

It would be nice to have a solution like a Linksys/Vonage router box with two rj11's on them at both buildings. Or can something like this be modified to talk to each other?

I can even use a co. to co. or co. to sl. setup as well.

Any thoughts?

What kind of phone system do they have now?

They have Vodavi XTS. The cost for two VOIP boards just to have voice circuits is not cost effective. I don't need this to be a Vodavi solution when I have open SL and CO ports.

You might try using Multi-link's "Multi-VOIP" units, one at each side. They are available in 1,2,4 or 8 ports to permit station ports to use an FXO unit on one side and and FXS unit on the other side as CO lines.

Their MVP4I0 would probably work in this application. They may have other more recent products for this. Check them out at www.multitech.com to see what they currently offer.

We have used the product that Ed posted the link for on and STS system. They were pretty easy to install but had some blips but they worked great after the companies IT guy setup some bandwidth management.

Here is a more accurate link for the units that I mentioned. Don't be swayed by the MSRP; the cost for these units is actually pretty reasonable considering the monthly savings:

Take a look

Thanx for the suggestion. I have not come across any solutions. I just need to create a cost analysis of ROI to the customer to see if it will fly.

Did you ever find a solution to this question?

How about two PC's, each running Asterisk, each equipped with a Digium FXS card, with the dial tone output of the Digium cards put on a vacant trunk appearance of the respective key systems?

Set up an IP-based connection, and you would have a free intercom in both directions.

Suggestion #2 (don't laugh) Use two MagicJacks, one at each location.

You can use Multi Tech or other units to work exactly like the ring down circuit. Just need VPN.

You can use two Linksys PAP2s to accomplish this. They're roughly $50 each. You want the PAP2-NA or the PAP2-T model (which is a newer replacement for the PAP2-NA). These are unlocked, which means you can modify the configuration. The PAP2s used for Vonage et. al. don't allow you to change the configuration.


https://www.voipdw.com/ProductDetails.asp?ProductCode=PAP2T-NA-vdw

Another neat trick you can do with the PAP2-T or the PAP2-NA is to configure it as a line simulator, so that when you pick up a phone on one port it rings the other. Only one is needed to do that since they have 2 ports.