1 files changed, 10 insertions, 0 deletions
diff --git a/ztcfg.c b/ztcfg.c
index 471ba30..611a347 100644
--- a/ztcfg.c
+++ b/ztcfg.c
@@ -1394,6 +1394,16 @@ int main(int argc, char *argv[])
 						current_state.channo = cc[x].chan | ZT_GET_PARAMS_RETURN_MASTER;
 						if (ioctl(fd, ZT_GET_PARAMS, &current_state))
 							needupdate = 1;
+						else if (current_state.chanpos == 16 &&
+							(cc[x].sigtype & ZT_SIG_CLEAR) && 
+							!(lc[current_state.spanno - 1].lineconfig &
+							(ZT_CONFIG_D4|ZT_CONFIG_ESF|ZT_CONFIG_B8ZS|ZT_CONFIG_CCS))) {
+								fprintf(stderr, 
+									"CAS signalling on span %u conflicts with %s on channel %u.\n",
+									current_state.spanno, 
+									sigtype_to_str(cc[x].sigtype), x);
+								exit(1);
+						}
 					}
 					
 					if (!needupdate) {