Sangoma Netborder SS7, Руководство пользователя

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13.5.4 Multiple Conditions (Logical AND)
You can emulate the logical AND operation available in many programming languages using multiple
conditions. When you place more than one condition in an extension,
all conditions must match
before the actions will be executed. For example, this block will only execute the actions if the
destination number is 500
AND it is Sunday.
<condition field="destination_number" expression="^500$"/>
<condition wday="1">
action(s)...
</condition>
Keep in mind that you must observe correct XML syntax when using this structure. Be sure to close
all conditions
except the last one with /> . The last condition contains the final actions to be run, and is
closed on the line after the last action.
By default, if any condition is false, NSG will move on to the anti-actions or the next extension without
even evaluating any more conditions.