Network out of order This topic has 2 replies, 1 voice, and was last updated 14 years, 1 month ago by GSM_Engineer. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts 18th September 2010 at 10:32 #64330 GSM_EngineerGuest What does it mean: CMS Error : Network out of order and then call drop 18th September 2010 at 11:33 #64331 MobileGuest This cause is sent if the service request cannot be actioned because of congestion (e.g. no channel, facility busy/congested etc.). 18th September 2010 at 16:07 #64332 GSM_EngineerGuest The serving cell is not congested, no alarm, no radio issue. But call drop suddenly occurs with this error. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) The forum ‘Telecom Design’ is closed to new topics and replies.