if (i & ZT_IOMUX_SIGEVENT) {
                            res = zt_get_event(p->subs[index].zfd);
                            ast_log(LOG_NOTICE, "Got event %d (%s)...\n", res, event2str(res));
                            res = 0;
                            /* Let us detect callerid when the telco uses distinctive ring */

                            curRingData[receivedRingT] = p->ringt;

                            if (p->ringt < p->ringt_base/2)
                                break;
                            ++receivedRingT; /* Increment the ringT counter so we can match it against
                                        values in zapata.conf for distinctive ring */
                        } else if (i & ZT_IOMUX_READ) {