Форум - Офисные АТС

i mean that problem was on operator side

OS7200 with problem is office's system

Same hardware from v2.66 to v4.21, digital link working before installed OS7200 (Other system: KX-TD1232, KX-TD500 and OXO without failed)

Wi$e:

Thanks for your answer, i capture trace for analisys ISDN messages, work about ISDN link