Set up Sip Voip Phone system
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Signguy121
Posts: 1 
Freshman Member
Freshman Member
in Nebula
I have a list of Ports to open on my USG60 Firewall. Should I have the NAT set to virtual server or 1:1 NAT and should I have NAT Loopback switched off?
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Hi @Signguy121,
Welcome to Zyxel community!
May you share your topology?
I would like to know where is your SIP phone and SIP server first.
Zyxel Melen0
Zyxel Employee
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