Call Parameter Syntax

The following table describes the syntax used for Call parameters in the Message Manipulations table.

Call Parameter Syntax

Subject

Description

param.call.<src/dst>.user

Specifies the source or destination username during run‑time.

param.call.<src/dst>.nat

Enables manipulation of a SIP message depending on whether (=='true') or not (=='false') the source or destination of the message is located behind NAT. The keywords can be used in the 'Condition' or 'Action Value' parameters in the Message Manipulations table. Message Manipulation rules using the keywords are applicable only to message manipulation on the outbound leg (i.e., the rules can only be assigned to the 'Outbound Message Manipulation Set' parameter in the IP Group table.