case AST_CONTROL_PROGRESS:
                                        ast_verb(3, "%s is making progress passing it to %s\n", c->name, in->name);
                                        /* Setup early media if appropriate */
                                        if (single && CAN_EARLY_BRIDGE(peerflags, in, c))
                                                ast_channel_early_bridge(in, c);
                                        if (!ast_test_flag64(outgoing, OPT_RINGBACK))
                                                if (single || (!single && !pa->sentringing)) {
                                                        ast_indicate(in, AST_CONTROL_PROGRESS);
                                                }
                                                if(!ast_strlen_zero(dtmf_progress)) {
                                                        ast_verb(3, "Sending DTMF '%s' to the called party as result of receiving a PROGRESS message.\n", dtmf_progress);
                                                        ast_dtmf_stream(c, in, dtmf_progress, 250, 0);
                                                }
                                        break;