I am doing the emergeny alignment.Assuming i am pt code 1 with another pt code 2.
After receiving from pt code 2 (LSSU FF FF 01 02 – emergency alignment, I responded with the same FF FF 01 02). Then pt code 2 will send me FISU (FF FF 00); I responded with the same FF FF 00. Pt code send me SLTM FF 80 16 81 ….etc; I responded with SLTM.
Then I got SLTA from pt code 2 (80 81 16 81 …etc); I responded with the same.
At this point onwards pt code 2 keep sending me FISU of 80 81 00 and subsequently 81 81 00; how should i acknowledge these FISUs; I responded with the same values; the link went into changeback procedure but went out of service again