There is no such functionality in JIRA. You might have to create the add on yourself.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You will have to learn how to make an add on (https://developer.atlassian.com/display/JIRADEV/JIRA+Plugin+Guide) and then use a fax API like this (http://www.interfax.net/en/dev/java).
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.