PARITY ERROR IN GROUP SWITCH

[pbxed]

55 PARITY ERROR IN GROUP SWITCH
DATE TIME ALP NOIF GSSIDE GSM
04MAY07 09:01:00 2 1 0 3
RDATE RTIME
04MAY07 09:07:20

<GSFTI:GSM=0,GSSIDE=0,TEST=SLOT;
GROUP SWITCH MODULE TEST
FAULTY TIME SWITCH = 2 GJC = 21 TIMESLOT = 31

EXECUTED

<GSFTI:GSM=1,GSSIDE=0,TEST=SLOT;
GROUP SWITCH MODULE TEST
FAULTY TIME SWITCH = 2 GJC = 21 TIMESLOT = 31

EXECUTED

<GSFTI:GSM=2,GSSIDE=0,TEST=SLOT;
GROUP SWITCH MODULE TEST
FAULTY TIME SWITCH = 2 GJC = 21 TIMESLOT = 31

EXECUTED

<GSFTI:GSM=3,GSSIDE=0,TEST=SLOT;
GROUP SWITCH MODULE TEST
FAULTY TIME SWITCH = 1 GJC = 13 TIMESLOT = 8

EXECUTED

<GSFTI:GSM=0,GSSIDE=0,TEST=SLOT;
GROUP SWITCH MODULE TEST

EXECUTED

Can someone decifer faulty time switch and GJC for me. It appears the problem has been resolved, but if it hadnt what would be my next step? Thanks