Specifications

MyPBX SOHO Administrator Guide
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APPENDIX C How to Configure NAT Setting
When MyPBX is behind a NAT (firewall), you need to configure NAT setting on
MyPBX if you want to use a remote extension.
Please follow section 1 or 2 below depending on your network configuration.
1. If MyPBX is connected to a local network, you must set up port forwarding on your
router. Specifically, you must map port 5060 (default SIP port) and port
10001-10200(default RTP port range) as UDP ports.
Next, log in MyPBX Web GUI, go to “PBX”->“Advanced Settings” ->“SIP Settings”
-> “NAT”
External IP Address: your router’s public IP address
External Host: your router’s domain
External Refresh Interval: 20 seconds
Local Network Identification:192.168.5.0/255.255.255.0 (change this according to your
network configuration)
NAT mode: Yes
Allow RTP Reinvite: Yes
Figure C-1
Assuming that your router’s host address is yeastar.3322.org, your local network is from
192.168.5.1-192.168.5.254, and the subnet Mask is 255.255.255.0, the MyPBX network
settings should configured like Figure C-2.
Figure C-2 MyPBX Network setting