Incoming call problems

[usa2k]

When you port a number it still always goes through the original number holder, like AT&T, SWBell, Verizon, Ameritech, etc.

The original number holder routes the call to voipo or whatever company the number has been ported to.

When you port a number, it needs to be in a Rate Center that VOIPo's carriers have a presence. Maybe that is what you mean by Original Holder? (Maybe semantics and we are saying the same thing.) This number of mine illustrated below, started with Vonage, then Packet8, then VOIPo.com. It is no so much being forwarded, and pointed to VOIPo's equipment.

You can see who handles the Rate Center portion by looking up your NPAXXX-XXX on a site like:
http://www.telcodata.us/search-area-...xchange-detail

for example, one of mine is a 734-437-XXXX number
http://www.telcodata.us/search-area-...4&exchange=437
And that points to Broadwing Communications in Livonia MI. (I live in Redford MI)

If there was a issue in Livonia, then it could be related to Broadwing or the Carrier VOIPo uses that is physically located in that Rate center. In my case http://www.telcodata.us/search-area-...VONIA&state=MI likey Bandwidth.com, although years ago it was likely Level3 that VOIPo used.

EDIT: A non-ported number, in the same Rate Center may have the same company being the Holder of it, if that is what VOIPo used to begin with. (Like two VoIP companies using Level3 and porting from one to the other. So a ported number is not very different from a newly issued number. In my case, if I got a new Livonia number, and VOIPo used Bandwidth.com, it would have to be a 734-237 number, because that is the block of numbers, bandwidth.com has issued to them.

Note that I am no telecom person, so hopefully I've said this correctly.