OLD PBX with Vonage

Posts: 18 · Vonage Forum Associate Joined: Jan 01, 2005 Posts: 18

Hi All,
I am having problems with my old PBX type business phone system.
Every so often people tell me that when they call it just rings and rings and never gets into my pbx system.
I spoke with Vonage and all they have to say is that they dont support PBX systems.
Does anybody have any ideas or thoughts ?
Thanks
RIchard Stanley

Posts: 4694 · Vonage Forum **MVM** Joined: Aug 30, 2005 Posts: 4694

I don't know anything about PBX, but I'd start by trying to determine whether the problem is with Vonage or with the PBX system. Get a Y-adapter and hook an ordinary corded telephone in parallel with the PBX system. See if there are any instances where the simple phone rings but nothing is indicated by the PBX.

Posts: 18 · Vonage Forum Associate Joined: Jan 01, 2005 Posts: 18

Steve,
Great idea...
I will try that .....
Richard

Posts: 2 · New Forum Member Joined: Jun 25, 2008 Posts: 2

You can try using a software IP PBX. Look at the Brekeke PBX.

http://www.brekeke.com/pbx/

Here are directions on how to make it work with Vonage:

http://www.brekeke.com/support/support_interoperability_itsp.php

Alternatively, you can install a SIP Proxy and Mediagateway to connect Vonage to you legacy PBX.

http://www.brekeke.com/products/sip_trunk.php

Good luck!

Posts: 39 · Posted: Thu Aug 07, 2008 2:46 am Post subject:

I wonder if for some reason the ringing voltage has dropped from your vonage device so that the PBX is not sensing a ring. Put an electronic phone (one with an electronic ringer) on the Y adapter mentioned and shut off the ringer. Call that line and see if you can answer the phone. If you can then it is probably the ringing voltage. The easiest way is to put on a ring booster to up the ringing voltage. Viking makes probably the best one (http://www.vikingelectronics.com/products/view_product.php?pid=219) or I believe that a off premise extender may do the same thing (http://www.vikingelectronics.com/products/view_product.php?pid=290). I was an agent for Viking but have not purchased from them recently so I do not have the prices. I have also found their technical help to be a good resource as well.

The other possiblity is that if you PBX will allow it is to convert it over to ground start trunks and then use a loop to ground start converter on each trunk. Viking Electronics also makes one. You would need to see which way is cheapest for you to buy the equipment.

Good luck

Dan Lol