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Bizfon Manual I: Installation Guide Appendix: Configuring SIP NAT Traversal
• Enter the WAN IP address of the router into the Mapped Host text field. Set the
Mapped RTP/RTCP Port Range for FXS lines and the Mapped RTP/RTCP Port
Range for IP lines according to the values specified on the router, in this case to 6000
(Min) and 6049 (Max) and 6050 (Min) and 6065 (Max), respectively. Click the Save
button to save the contents.
The Bizfon will activate the settings and register the extensions on the Bizfon SIP Server
after a few minutes. You can verify the settings from the main Bizfon Management menu
under Status in the SIP Registration Status section.
Bizfon2000 and Bizfon4000 (SW Version 3.1.x) 39