shotgunning
v.— «Find Me/Follow Me can instigate a process known as “shotgunning.” With shotgunning, every contact number for the user is rung simultaneously with each inbound call. The call is then directed to whichever number picks up first.» —“Hot New Technology Helps Busy Executives Leverage Their ‘Presence’ and Boost Productivity” PR Web Sept. 12, 2006. (source: Double-Tongued Dictionary)