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Configuring Virtual Interfaces

A voice call traverses two virtual interfaces. The configuration of the two virtual interfaces determines the NAT pool (media service) and the logical router interface (that is, a specific unit on a physical interface) for the call to use.

A virtual interface provides the mapping between interface names that appear in the H.248 termination ID in H.248 messages and the following:

The media service to be used for a gate
A physical interface on the router

Step-by-Step Procedure

To configure a virtual interface:

Create a virtual interface, and specify a name for the interface. [edit services pgcp] edit virtual-interface v1
Specify the name of the media service that contains the NAT pool to be used for gates on the virtual interface that you are configuring. [edit services pgcp virtual-interface v1] user@host#set media-service media-service-one
Specify the physical router interface.[edit services pgcp virtual-interface v1] user@host#set interface fe-1/0/0

Configuring Virtual Interfaces

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