SIP Pinhole limitation and NAT handling on Zyxel H Series
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Zyxel_Stanley
Posts: 1,481 
Zyxel Employee
Zyxel Employee
in Other Topics
Question:
Does SIP Pinhole perform SIP transformation for NAT traversal?
Answer:
No. SIP Pinhole does not support SIP transformation on H Series. NAT traversal behavior that depends on SIP header/SDP rewriting is controlled by the SIP Server side, not by SIP Pinhole. SIP Pinhole only opens/manages related traffic paths and does not rewrite SIP signaling content.
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