SIP trunks between Mitel 3300 and Cisco Posted on November 27, 2015March 19, 2020 by Paul link 0 / 5. 0 Share this:Click to email a link to a friend (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Like this:Like Loading...