What is SIP pinhole setting?
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Zyxel_Stanley
Posts: 1,435 
Zyxel Employee
Zyxel Employee
in Networking
Question:
What is the SIP pinhole setting?
Answer:
The SIP pinhole setting is used to maintain SIP signaling and SIP media sessions on the firewall.
It automatically keeps the required ports temporarily open (“pinhole”) so that SIP traffic—such as VoIP calls—can pass through the firewall correctly without being dropped.
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