securitywarehouse Posted July 15, 2010 Share Posted July 15, 2010 I have the above item installed. the engineer put a t mob sim in with Quote Link to comment Share on other sites More sharing options...
Secware_Tech6 Posted July 15, 2010 Share Posted July 15, 2010 Depending on your tariff and call volume will depend how long the credit lasts. Id ensure your system is hanging up correctly after a call. Quote Link to comment Share on other sites More sharing options...
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