diff --git a/openbsc/doc/examples/osmo-nitb/nanobts/openbsc-multitrx.cfg b/openbsc/doc/examples/osmo-nitb/nanobts/openbsc-multitrx.cfg
index 9c9108c..7a187f8 100644
--- a/openbsc/doc/examples/osmo-nitb/nanobts/openbsc-multitrx.cfg
+++ b/openbsc/doc/examples/osmo-nitb/nanobts/openbsc-multitrx.cfg
@@ -6,6 +6,8 @@
 line vty
  no login
 !
+e1_input
+ e1_line 0 driver ipa
 network
  network country code 1
  mobile network code 1
@@ -49,7 +51,7 @@
   rach tx integer 9
   rach max transmission 7
   ip.access unit_id 1800 0
-  oml ip.access stream_id 255
+  oml ip.access stream_id 255 line 0
   gprs mode none
   trx 0
    rf_locked 0