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2nd October 2003 at 03:04 #36553Ng Kwong KuekGuest
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 again3rd October 2003 at 09:23 #36554dmitryGuest
be careful in such point – sltm and slta from both exhanges must be in the same network – nat0(10bin) or nat1(11 bin) or int0(00bin) . Another problem – be careful with point codes.5th October 2003 at 03:53 #36555kwongkuekGuest
thanks for your reply. Assuming
point code 2 sends me (point code 1) a SLTM
Point Code 1 Point Code 2
Are the above hex values (SLTA) for the BSN/BIB & FSN/FIB correct? Or should I send 8080 instead of 8081
80809th March 2004 at 08:09 #36556manZarGuest
You have to take care while replying to the msgs, as FISU don’t require the FSN/BSN to be incremented while on the other side LSSU, MSU requires it to be.
The second thing, if you receive SLTM ( test msg ) should reply with in timeout period of the other end. If times out the other end re-enters into aliengment procedure.