diff --git a/serval.h b/serval.h
index a34f9d00..f636000c 100755
--- a/serval.h
+++ b/serval.h
@@ -1320,6 +1320,7 @@ extern vomp_call_state vomp_call_states[VOMP_MAX_CALLS];
 #define VOMP_CODEC_16SIGNED 0x05
 #define VOMP_CODEC_8ULAW 0x06
 #define VOMP_CODEC_8ALAW 0x07
+#define VOMP_CODEC_PCM 0x08
 #define VOMP_CODEC_DTMF 0x80
 #define VOMP_CODEC_ENGAGED 0x81
 #define VOMP_CODEC_ONHOLD 0x82
diff --git a/vomp.c b/vomp.c
index a3a029b8..c0a441ea 100644
--- a/vomp.c
+++ b/vomp.c
@@ -1081,6 +1081,7 @@ int vomp_sample_size(int c)
   case VOMP_CODEC_16SIGNED: return 320; /* 8000x2bytes*0.02sec */
   case VOMP_CODEC_8ULAW: return 160;
   case VOMP_CODEC_8ALAW: return 160;
+  case VOMP_CODEC_PCM: return 320;
   case VOMP_CODEC_DTMF: return 1;
   case VOMP_CODEC_ENGAGED: return 0;
   case VOMP_CODEC_ONHOLD: return 0;
@@ -1100,6 +1101,7 @@ int vomp_codec_timespan(int c)
   case VOMP_CODEC_16SIGNED: return 20; 
   case VOMP_CODEC_8ULAW: return 20;
   case VOMP_CODEC_8ALAW: return 20;
+  case VOMP_CODEC_PCM: return 20;
   case VOMP_CODEC_DTMF: return 80;
   case VOMP_CODEC_ENGAGED: return 20;
   case VOMP_CODEC_ONHOLD: return 20;