Iridium IMF 1000- Power cycles when making or receiving a call
Summary:

This artical describes the problem when the Iridium IMF 1000 power cycles (switches off/on)
Article:

Symptoms IMF power cycles when placing or receiving calls Causes · Inadequate DC power supply Troubleshooting and Resolution · Power must be 10 to 32 VDC and a minimum of 25 Watts. Examples of power sources meeting this requirement: 10 VDC @ 2.5 Amps 12 VDC @ 2.08 Amps 24 VDC @ 1.04 Amps 28 VDC @ .89 Amps