Configure bsc and msc to connect to the specific stp provided in test

Change-Id: I89deaa71956131766fec8fcc3bc7381ebb0e187f
diff --git a/suites/aoip_sms/mo_mt_sms.py b/suites/aoip_sms/mo_mt_sms.py
index 12f8f2b..76b7e51 100755
--- a/suites/aoip_sms/mo_mt_sms.py
+++ b/suites/aoip_sms/mo_mt_sms.py
@@ -5,9 +5,9 @@
 bts = suite.bts()
 mgcpgw = suite.mgcpgw(bts_ip=bts.remote_addr())
 mgw_bsc = suite.mgw()
-msc = suite.msc(hlr, mgcpgw)
-bsc = suite.bsc(msc, mgw_bsc)
 stp = suite.stp()
+msc = suite.msc(hlr, mgcpgw, stp)
+bsc = suite.bsc(msc, mgw_bsc, stp)
 ms_mo = suite.modem()
 ms_mt = suite.modem()