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SIP SIGNALING TRAVERSAL
To allow successful SIP registration and call establishment, users will need to configure SIP signaling NAT
traversal by associating their private local network addresses and ports with their public addresses and
ports. To do so, please see the following steps:
Step 1: From the UCM630X web UI, users can retrieve or modify their internal UDP port from the PBX
Settings -> SIP Settings -> General page. In the same section, the TCP/TLS ports can be found in the
TCP/TLS tab. Please see the figures below:
Figure 1: SIP Signaling Penetration - UDP Port
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