Iridium phone

Soutpiel Safari
John & Jenny
Sun 20 Mar 2011 08:33
I need to top up my Iridium phone airtime.  To help me decide which package to go for, can you tell me when my present line rental expires and if I purchase more line rental at this time, does it rum from the time of purchase or from expiry of the existing line rental period?
Regards
John Franklin