diff --git a/centos/1.6.2.24/Dockerfile b/centos/1.6.2.24/Dockerfile
index 7cacc36..674afb9 100644
--- a/centos/1.6.2.24/Dockerfile
+++ b/centos/1.6.2.24/Dockerfile
@@ -9,7 +9,7 @@ ENV ASTERISK_ADDONS_VERSION 1.6.2.4
 COPY build-asterisk.sh /
 RUN /build-asterisk.sh
 
-EXPOSE 5060/udp 5060/tcp
+EXPOSE 5060/udp 5060/tcp 4569/udp
 VOLUME /var/lib/asterisk/sounds /var/lib/asterisk/keys /var/lib/asterisk/phoneprov /var/spool/asterisk /var/log/asterisk
 
 COPY docker-entrypoint.sh /