Index: wct4xxp/base.c
===================================================================
--- wct4xxp/base.c      (revision 3133)
+++ wct4xxp/base.c      (working copy)
@@ -2617,7 +2617,9 @@
                        t4_check_alarms(wc, span);
        }
        if (!ts->span.alarms) {
-               ts->span.timingslips++;
+               if ((isr3 & 0x3) || (isr4 & 0xc0));
+                       ts->span.timingslips++;
+
                if (debug & DEBUG_MAIN) {
                        if (isr3 & 0x02)
                                printk("TE%d10P: RECEIVE slip NEGATIVE on span %d\n", wc->numspans, span + 1);