MyPBX U100&U200 Administrator's Guide
www.yeastar.com Page 135
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 WebGUI, go to „PBX‟->‟Advanced Settings‟ ->‟SIP
Settings‟ -> „NAT‟
External IP Address: your router‟s public IP address
External Host: your router‟s domain
ExternalRefresh 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
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