OS7200S v.4.75 about 20 five button IP sets. 8 copper CO's. OAS set for 16 MGI in slot 4. Power flickered last week duirng T-storm. Staff could not call out or receive incoming call. Found "No MGI channels available" Tried different OAS settings. Could not get MGI's to work. Put system in Tutorial mode for MCP MGI's and ordered refurb OAS. Refurb OAS acts the same.Tried card in slot 5 and 2. Here are some testing results (with both cards) OAS to 16 MGI only= on card reset when run comes on so does SVC1 then about 30 sec later SVC3. On MOBEX only setting on run SVC2 then SVC3. On any combo of MOBEX/MGI on run SVC2 about 20 sec SVC1 about 40 sec SVC3....sometimes SVC4 will light for about 10 sec.
Any thoughts. Have cleared and reloaded from backup.