--- vdr-1.5.15/channels.c	2008-02-10 16:45:38.000000000 +0100
+++ vdr-1.5.15-patched/channels.c	2008-02-22 19:13:32.000000000 +0100
@@ -624,10 +624,24 @@
   return NULL;
 }
 
+static const char *DropParseParameter(const char *s)
+{
+  if (*++s) {
+     char *p = NULL;
+     errno = 0;
+     strtol(s, &p, 10);
+     if (!errno && p != s)
+        return p;
+     }
+  esyslog("ERROR: invalid value for parameter '%c'", *(s - 1));
+  return NULL;
+}
+
 bool cChannel::StringToParameters(const char *s)
 {
   while (s && *s) {
         switch (toupper(*s)) {
+          case 'A': s = DropParseParameter(s); break;
           case 'B': s = ParseParameter(s, bandwidth, BandwidthValues); break;
           case 'C': s = ParseParameter(s, coderateH, CoderateValues); break;
           case 'D': s = ParseParameter(s, coderateL, CoderateValues); break;
@@ -636,7 +650,11 @@
           case 'I': s = ParseParameter(s, inversion, InversionValues); break;
           case 'L': polarization = *s++; break;
           case 'M': s = ParseParameter(s, modulation, ModulationValues); break;
+          case 'Z': s = DropParseParameter(s); break;
+          case 'O': s = DropParseParameter(s); break;
+          case 'P': s = DropParseParameter(s); break;
           case 'R': polarization = *s++; break;
+          case 'S': s = DropParseParameter(s); break;
           case 'T': s = ParseParameter(s, transmission, TransmissionValues); break;
           case 'V': polarization = *s++; break;
           case 'Y': s = ParseParameter(s, hierarchy, HierarchyValues); break;