diff --git a/res/res_pjsip.c b/res/res_pjsip.c
index 2b0e777faa..cc86f90450 100644
--- a/res/res_pjsip.c
+++ b/res/res_pjsip.c
@@ -1829,6 +1829,12 @@
 				<parameter name="EndpointName">
 					<para>The name of the endpoint associated with this information.</para>
 				</parameter>
+				<parameter name="UserAgent">
+					<para>Content of the User-Agent header in REGISTER request</para>
+				</parameter>
+				<parameter name="RegExpire">
+					<para>Absolute time that this contact is no longer valid after</para>
+				</parameter>
 			</syntax>
 		</managerEventInstance>
 	</managerEvent>
diff --git a/res/res_pjsip/pjsip_options.c b/res/res_pjsip/pjsip_options.c
index 3a4524316a..b8d38ed42d 100644
--- a/res/res_pjsip/pjsip_options.c
+++ b/res/res_pjsip/pjsip_options.c
@@ -1130,6 +1130,8 @@ static int format_contact_status(void *obj, void *arg, int flags)
 
 	ast_str_append(&buf, 0, "AOR: %s\r\n", wrapper->aor_id);
 	ast_str_append(&buf, 0, "URI: %s\r\n", contact->uri);
+	ast_str_append(&buf, 0, "UserAgent: %s\r\n", contact->user_agent);
+	ast_str_append(&buf, 0, "RegExpire: %ld\r\n", contact->expiration_time.tv_sec);
 	ast_str_append(&buf, 0, "Status: %s\r\n", ast_sip_get_contact_status_label(status->status));
 	if (status->status == UNKNOWN) {
 		ast_str_append(&buf, 0, "RoundtripUsec: N/A\r\n");