VOIP has stopped working -- FIOS Internet -- Verizon blocking ports?

Question

Background:
I have two VOIP device, one is from VOIP.com (HT-286) and the other is my Blackberry 8220 wifi-enabled phone.
Until December, I had Cox Internet for the last two years -- ZERO problems with the above devices.  I made and received phone calls just fine.
FIOS internet installed early december.  Both devices worked fine on install.  I made and recevieved VOIP phone calls with both the VOIP.com device (Home phone) and my wifi Blackberry.
I've taken my VOIP box over to the neighbor's to test it -- works fine.  I plug into their router and have no problems.  My wifi Blackberry works just fine when I go to to the bookstore or coffee shop (Free wifi).
Internet (as defined by using PC web browser) and TV work fine.  We have VOIP service with VOIP.com.
Problem:
About two weeks ago, I noticed that I would occasionally get phone calls on the blackberry and there would be no one there. I didn't think anything of it until my wife finally asked me why she couldn't make outgoing calls on the house phone.
I tested it, and this is what I found:
BOTH PHONES:
Phone rings.  "Dead" call.  However, the caller can hear ME but I cannot hear them
I make outgoing call on VOIP/house phone:  I get dial tone, and dial as normal, but once I've dialed, SILENCE.  No ring, nothing.  The called phone will ring but I will not hear it, nor hear the other party answering.  I can call my wife's cel phone (Tmobile) or work phone and it rings.  She can hear me, but I cannot hear her.
I make outgoing calls on wifi Blackberry:  Enter number and press send as normal, but SILENCE.  Same symptoms as above.
As I said, I've taken both devices to other networks and they work fine.  NOTHING was changed on the router in the time frame EXCEPT the name of the SSID, which I changed the very first day --both devices were working for several weeks after.
I have powered off and restarted the router a dozen times and I just did a "hard" reset to return it to the factory settings :: my voip service still is not working properly.
WHAT I HAVE DONE:
I called Verizon FIOS Internet support.  They say since I can watch TV and access the web, that nothing is wrong.
I called VOIP.com and they say they see the device coming into their network, but they cannot see if Verizon is blocking ports 5060-5070.
Blackberry support flat-out says that Verizon is blocking ports.
Can someone help?
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Answer 1

plautus wrote:
Background:
I have two VOIP device, one is from VOIP.com (HT-286) and the other is my Blackberry 8220 wifi-enabled phone.
Until December, I had Cox Internet for the last two years -- ZERO problems with the above devices.  I made and received phone calls just fine.
FIOS internet installed early december.  Both devices worked fine on install.  I made and recevieved VOIP phone calls with both the VOIP.com device (Home phone) and my wifi Blackberry.
I've taken my VOIP box over to the neighbor's to test it -- works fine.  I plug into their router and have no problems.  My wifi Blackberry works just fine when I go to to the bookstore or coffee shop (Free wifi).
Internet (as defined by using PC web browser) and TV work fine.  We have VOIP service with VOIP.com.
Problem:
About two weeks ago, I noticed that I would occasionally get phone calls on the blackberry and there would be no one there. I didn't think anything of it until my wife finally asked me why she couldn't make outgoing calls on the house phone.
I tested it, and this is what I found:
BOTH PHONES:
Phone rings.  "Dead" call.  However, the caller can hear ME but I cannot hear them
I make outgoing call on VOIP/house phone:  I get dial tone, and dial as normal, but once I've dialed, SILENCE.  No ring, nothing.  The called phone will ring but I will not hear it, nor hear the other party answering.  I can call my wife's cel phone (Tmobile) or work phone and it rings.  She can hear me, but I cannot hear her.
I make outgoing calls on wifi Blackberry:  Enter number and press send as normal, but SILENCE.  Same symptoms as above.
As I said, I've taken both devices to other networks and they work fine.  NOTHING was changed on the router in the time frame EXCEPT the name of the SSID, which I changed the very first day --both devices were working for several weeks after.
I have powered off and restarted the router a dozen times and I just did a "hard" reset to return it to the factory settings :: my voip service still is not working properly.
WHAT I HAVE DONE:
I called Verizon FIOS Internet support.  They say since I can watch TV and access the web, that nothing is wrong.
I called VOIP.com and they say they see the device coming into their network, but they cannot see if Verizon is blocking ports 5060-5070.
Blackberry support flat-out says that Verizon is blocking ports.
Can someone help?
VZ isn't blocking those ports.  they only have restrictions on port 25, and in some areas port 80.  all other ports are open.
I would reach back out to voip.com and see if you can escelate it with them.    you can also go to portforward.com and see if they have any walkthrough guides for your particular device.    if you have a friend with fios you can try switching routers to see if that is the culprit, but there is nothing in your description that suggests to me that it would be a router issue.     Also look into QOS if your VOIP people can give you any information on that,   it may also be an avenue you would want to explore if you have VOIP transpiring over there.