I'm using VOIP phone with Verizon fios internet router.
I called several times with technical agent and everybody said Verizon does not block any port except 80 and 25
so, I considered port forwarding to opening UDP 5060 for my VOIP phone. and
I did correctly port forwarding from my phone IP address any to UDP 5060.
when I tested the nmap to check open the UDP 5060 is opened, my phone said it's opened.

so, it means my phone is ready and Itracedlikebelow.
Tracing route to lgdacom.net [210.124.165.161] over a maximum of 30 hops: 1 32 ms 1 ms 1 ms Wireless_Broadband_Router.home [192.168.1.1]
2 10 ms 6 ms 8 ms L100.WASHDC-VFTTP-85.verizon-gni.net [96.255.15.1] 3 16 ms 10 ms 12 ms G0-9-1-7.WASHDC-LCR-21.verizon-gni.net [130.81.185.80] 4 12 ms 12 ms 12 ms ae1-0.RES-BB-RTR1.verizon-gni.net [130.81.209.206] 5 87 ms 87 ms 86 ms 0.xe-4-1-8.XT1.SCL2.ALTER.NET [152.63.7.5]
6 86 ms 120 ms 87 ms GigabitEthernet6-0-0.GW3.SCL2.ALTER.NET [152.63.49.93] 7 84 ms 90 ms 86 ms lgdacom-gw.customer.alter.net [157.130.206.146]
I tested every gateway went through to the phone company.
But, the one of routing server G0-9-1-7.WASHDC-LCR-21.verizon-gni.net [130.81.185.80] is failed to open UDP 5060 ,
I supposed thie server blocked UDP 5060 which my VOIP phone never worked.
May be, out there ,many customers like me complained about this kind of phone does not work since April of this year. now its almost end year. ifit'snotfixed, peoplehavethissameproblemwillleaveVerizonsoon.
Please advise this issue i think it's beyond the setting of Router
To use this VOIP phone, below port surely open end to the lgdacom.net
UDP 5060
UDP 20000~ 60000
TCP 10080
but most important pot is UDP 5060 !!
