Hi, It is possible to create a writing rule that has a pattern by "length"? eg: ^([689] [0-9] {0,9})$ Regards, Raul. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.sipwise.com/mailman/private/spce-user_lists.sipwise.com/attachments/20170530/1920a798/attachment.html>