May I take a SIP call on my mobile line? Invoxia November 17, 2015 18:38 Updated No, you may not take a SIP call (made to your NVX 220 configured SIP line) on your mobile line. Related articles Can I call mobile and fixed lines? How to install and configure the NVX 200? Updating your Audioffice. Does the NVX 220 works with static IP? What configuration do I need?