diff --git a/openbsc/src/mgcp.cfg b/openbsc/src/mgcp.cfg
index d9950ab..678f546 100644
--- a/openbsc/src/mgcp.cfg
+++ b/openbsc/src/mgcp.cfg
@@ -15,4 +15,5 @@
   rtp base 4000
   sdp audio payload number 98
   sdp audio payload name AMR/8000
+  number endpoints 31
   loop 1