I have 2 offices


Both PBX servers are setup exact the same in the same datacenter with no firewall etc.. Full Open to the world. Both offices are using the same exact phones(spa-942's)

One office is basic NAT shared from the office provider. I have 30 phones coming from this office(nat) to the remote pbx server and it works flawless

2nd office is basic NAT shared from verizion fios. I have 6 phones comeing from this office(nat) to the remove pbx server and I have issues. The phones randomly become unreachable..to asterisk..

any ideas?