SIP Configuration for Local Symmetric NAT Traversal

This article applies to:	Product	Version
	Tmedia	3.0, 3.2
	SBC	3.1

It is assume, at this point, that a SIP NAP or a SIP Open NAP has already been created and allocated.

To configure a Local Symmetric NAT Traversal

1. Select NAPs in the Navigation Panel:

2. Select an existing SIP NAP in the list:

3. Click Network Address Translation (NAT):

4. We assume that a local NAT has been created and allocated. SBC/Tmedia can be configured for RTP messages traversing a local NAT as follows:

• No NAT: SBC/Tmedia is not behind a NAT for RTP messages.
• Existing [Local NAT name] item: local NAT name that will be used for the local RTP traversal method.
  

Select the appropriate method for RTP NAT Traversal.

5. We assume that a local NAT has been created and allocated. SBC/Tmedia can be configured for SIP messages traversing a local NAT as follows:

• No NAT: SBC/Tmedia is not behind a NAT for SIP messages.
• Existing [Local NAT name] item: local NAT name that will be used for the local SIP traversal method.
  

Select the appropriate method for SIP NAT traversal.

6. Click Save.