diff --git a/include/patty/ax25/sock.h b/include/patty/ax25/sock.h
index 79e0dcf..3de1273 100644
--- a/include/patty/ax25/sock.h
+++ b/include/patty/ax25/sock.h
@@ -152,6 +152,11 @@ ssize_t patty_ax25_sock_send_disc(patty_ax25_sock *sock, int pf);
 ssize_t patty_ax25_sock_send_xid(patty_ax25_sock *sock,
                                  enum patty_ax25_frame_cr cr);
 
+ssize_t patty_ax25_sock_send_test(patty_ax25_sock *sock,
+                                  enum patty_ax25_frame_cr cr,
+                                  void *info,
+                                  size_t infolen);
+
 ssize_t patty_ax25_sock_write(patty_ax25_sock *sock,
                               void *buf,
                               size_t len);
diff --git a/src/sock.c b/src/sock.c
index b746990..d04464f 100644
--- a/src/sock.c
+++ b/src/sock.c
@@ -594,6 +594,17 @@ error_noif:
     return -1;
 }
 
+ssize_t patty_ax25_sock_send_test(patty_ax25_sock *sock,
+                                  enum patty_ax25_frame_cr cr,
+                                  void *info,
+                                  size_t infolen) {
+    return patty_ax25_sock_send(sock,
+                                PATTY_AX25_FRAME_COMMAND,
+                                control_u(PATTY_AX25_FRAME_TEST, 1),
+                                info,
+                                infolen);
+}
+
 ssize_t patty_ax25_sock_write(patty_ax25_sock *sock,
                               void *buf,
                               size_t len) {