diff --git a/kamailio/default.cfg b/kamailio/default.cfg
index 8f92bbe..0e90873 100644
--- a/kamailio/default.cfg
+++ b/kamailio/default.cfg
@@ -52,7 +52,7 @@ tcp_keepcnt = 3
 tcp_keepidle = 30
 tcp_keepintvl = 10
 tcp_linger2 = 30
-tcp_rd_buf_size = 4096
+tcp_rd_buf_size = 80000
 tcp_send_timeout = 10
 tcp_wq_blk_size = 2100
 tcp_wq_max = 10485760