Thanks for your interest in Cisco VNI data. VoIP traffic is part of Web/ Data traffic and we do not split it out separately.
We do have historical values at the regional level, but not at the country level. We have mobile and fixed IP and Internet traffic since 2005 for all of the regions VNI covers. If you are interested in this data, we can share it with you by email. We're not able to see an email address associated with this question, so please write to us at firstname.lastname@example.org with your request. Thank you.