Telephonic communications
Plural exchange network or interconnection
Connection call model
Inventor
active
No associations
LandOfFree
David Zerling does not yet have a rating. At this time, there are no reviews or comments for this inventor.
If you have personal experience with David Zerling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and David Zerling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-P-1117637