Section

Item Field

Description

Default

 

 

 

 

 

Update

Enter entries

Empty

 

Entry

Index: Enter dialing number

 

 

 

Public Address: Enter SIP account.

 

 

 

Port: Enter port number

 

 

 

Via Proxy: Select via Proxy or not

 

 

 

 

 

 

Delete

Delete entries

Empty

 

Entry

Index: Enter the index for delete.

 

 

 

 

 

13. Use Private IP (Behind NAT)

Using a Private IP in a NAT Environment

The gateway is able to communicate with other gateways under a NAT environment using Private IP addresses on the LAN side of your IP Sharing device. However you must configure the IP Sharing device to treat the gateway as a Virtual Server using UDP port 5060,2000.

You will have to ask MIS personnel to enable the ports listed in the following table.

Packet Modes

Using Ports

SIP Signal Packets

UDP 5060

 

 

Gateway Signaling Port

UDP 2000

 

 

Gateway RTP Base Port

UDP 4000

 

 

FTP software upgrade

TCP 21

 

 

Web management

TCP 80

 

 

If you want to use private IP behind NAT and Proxy Server is in Internet, you must need to enable STUN service. If the system is installed in VPN, it is not necessary to Enable Stun.

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