msc: Unify channel establishment for CM SERV REQ + PAGING

Change-Id: I24e3dfa1ef88c48c39bf0248074e88e682bc8404
diff --git a/msc/MSC_Tests.ttcn b/msc/MSC_Tests.ttcn
index 322be5f..99580f6 100644
--- a/msc/MSC_Tests.ttcn
+++ b/msc/MSC_Tests.ttcn
@@ -1275,7 +1275,7 @@
 	/* MSC->BSC: expect PAGING from MSC */
 	BSSAP.receive(tr_BSSMAP_Paging(g_pars.imsi));
 	/* MS -> MSC: PAGING RESPONSE */
-	f_establish_fully_pag(valueof(ts_MI_IMSI_LV(g_pars.imsi)));
+	f_establish_fully(valueof(ts_MI_IMSI_LV(g_pars.imsi)), EST_TYPE_PAG_RESP);
 
 	f_create_mgcp_expect(ExpectCriteria:{omit,omit,omit});