Hi. The following script doesn't proxy to "sip:voicemail@domain" if no "Subject" header exits: <cpl> <incoming> <string-switch field="subject"> <string contains="hello"> <reject status="reject" reason="Subjet = hello" /> </string> <otherwise> <location url="sip:voicemail@domain" /> <proxy /> </location> </otherwise> </string-switch> </incoming> </cpl> For that I need to add <not-present> and clone <otherwise> content: <cpl> <incoming> <string-switch field="subject"> <string contains="hello"> <reject status="reject" reason="Subjet = hello" /> </string> <not-present> <location url="sip:voicemail@domain" /> <proxy /> </location> </not-present> <otherwise> <location url="sip:voicemail@domain" /> <proxy /> </location> </otherwise> </string-switch> </incoming> </cpl> Is there any way to group <not-present> and <otherwise>? -- Iñaki Baz Castillo &lt;ibc(a)aliax.net&gt;