Teletronics Enterprise SIP Server Bedienungsanleitung PDF herunterladen (Seite 31)

TELETRONICS INTERNA

TIONAL, INC.

30 Enterprise SIP Server Tutorial – Dial Plan

s-tut-dp1.51-041228

8. NAT Traversal Functionality

Enterprise SIP Server offers NAT Traversal Functionalities for SIP. When 2 clients each on a

different network form a connection, the NAT functionality will automatically be set active and

you don’t need to set anything. You can also set the NAT Traversal Functionality for each

routing in the Dial Plan.

When the NAT traversal functionality is active, information within a SIP packet is changed and

the Enterprise SIP Server hides each client’s IP Address. Tunneling of RTP and RTCP packets

for sending voice will also occur.

Therefore, NAT Traversal functionality not only resolves the network connection for the call, but

also provides a level of security by making it difficult to identify individual clients.

8.1. Changing between NAT Traversal ON/OFF

Even though NAT Traversal functionality is automatically executed, it is possible to set the NAT

functionality in the Dial Plan for each call.

8.1.1. If the callee’s Domain is “domain”, set the NAT Traversal functionality to active

Matching Patterns

Deploy Patterns

$request=^INVITE

to=@domain[ >;]*

$nat=true

8.1.2. If the caller’s IP Address is 192.168.0.5, set the NAT Traversal functionality to

inactive

Matching Patterns

Deploy Patterns

$request=^INVITE

$addr=192\.168\.0\.5$

$nat=false

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Teletronics Enterprise SIP Server Bedienungsanleitung Seite 31