Hi there,
Could you please provide more details on the issue. What is happening when the E1-2 goes to "rest", in telephony terms? What protocol is used: PRI ISDN or CAS/R2? What component is logging event 0817? If you mean event 0x817, this is GCEV_OPENEX, an event which indicate successful completion of gc_OpenEx().
So far it's not quite clear what is happening there, so please describe the issue in more details