diff --git a/sysmocom/suites/dynts/switch_tch_pdch.py b/sysmocom/suites/dynts/switch_tch_pdch.py
index f0bbd38..7be4be7 100755
--- a/sysmocom/suites/dynts/switch_tch_pdch.py
+++ b/sysmocom/suites/dynts/switch_tch_pdch.py
@@ -32,18 +32,18 @@
     wait(lambda: len(ms_mo.call_id_list()) == 0 and len(ms_mt.call_id_list()) == 0)
     print('hangup success')
 
-hlr = suite.hlr()
-bts = suite.bts()
+hlr = tenv.hlr()
+bts = tenv.bts()
 pcu = bts.pcu()
-mgw_msc = suite.mgw()
-mgw_bsc = suite.mgw()
-stp = suite.stp()
-ggsn = suite.ggsn()
-sgsn = suite.sgsn(hlr, ggsn)
-msc = suite.msc(hlr, mgw_msc, stp)
-bsc = suite.bsc(msc, mgw_bsc, stp)
-ms_mo = suite.modem()
-ms_mt = suite.modem()
+mgw_msc = tenv.mgw()
+mgw_bsc = tenv.mgw()
+stp = tenv.stp()
+ggsn = tenv.ggsn()
+sgsn = tenv.sgsn(hlr, ggsn)
+msc = tenv.msc(hlr, mgw_msc, stp)
+bsc = tenv.bsc(msc, mgw_bsc, stp)
+ms_mo = tenv.modem()
+ms_mt = tenv.modem()
 
 bsc.bts_add(bts)
 sgsn.bts_add(bts)