diff --git a/library/IPA_Emulation.ttcnpp b/library/IPA_Emulation.ttcnpp
index b10a983..5c385e6 100644
--- a/library/IPA_Emulation.ttcnpp
+++ b/library/IPA_Emulation.ttcnpp
@@ -51,6 +51,11 @@
 	IPA_MODE_SERVER
 }
 
+type enumerated IpaInitBehavior {
+	IPA_INIT_SEND_IPA_ID_GET,
+	IPA_INIT_SEND_IPA_ID_ACK
+}
+
 type record ASP_IPA_Unitdata {
 	IpaStreamId	streamId,
 	IpaExtStreamId	streamIdExt optional,
@@ -165,6 +170,7 @@
 
 	var IpaMode g_mode;
 	var boolean g_ccm_enabled;
+	var IpaInitBehavior g_init_behavior;
 	var IPA_CCM_Parameters	g_ccm_pars := c_IPA_default_ccm_pars;
 }
 
@@ -425,9 +431,12 @@
 
 /* main function to use for a server-side IPA implementation */
 function main_server(charstring local_host, IPL4asp_Types.PortNumber local_port,
-		     boolean ccm_enabled := true) runs on IPA_Emulation_CT {
+		     boolean ccm_enabled := true,
+		     IpaInitBehavior init_behavior := IPA_INIT_SEND_IPA_ID_GET)
+runs on IPA_Emulation_CT {
 	g_mode := IPA_MODE_SERVER;
 	g_ccm_enabled := ccm_enabled;
+	g_init_behavior := init_behavior;
 	f_bind(local_host, local_port);
 	ScanEvents();
 }
@@ -566,7 +575,14 @@
 			g_ipa_conn_id := asp_evt.connOpened.connId;
 			f_send_IPA_EVT(t_ASP_IPA_EVT_UD(ASP_IPA_EVENT_UP));
 			if (g_mode == IPA_MODE_SERVER and g_ccm_enabled) {
-				f_ccm_tx(valueof(ts_IPA_ID_GET));
+				select (g_init_behavior) {
+					case (IPA_INIT_SEND_IPA_ID_GET) {
+						f_ccm_tx(valueof(ts_IPA_ID_GET));
+					}
+					case (IPA_INIT_SEND_IPA_ID_ACK) {
+						f_ccm_tx(valueof(ts_IPA_ACK));
+					}
+				}
 			}
 		}