diff --git a/net/config_2g3g b/net/config_2g3g
index bd27cf7..379f505 100644
--- a/net/config_2g3g
+++ b/net/config_2g3g
@@ -15,11 +15,12 @@ MCC=001
 MNC=01
 
 TCH_TYPE=TCH/H
+TCH_TYPE2=TCH/F
 
 BTS_BAND=GSM-1800
 BTS_LAC=23
 BTS_MAX_POWER_RED=22
-BTS_CODEC_SUPPORT=fr amr
+BTS_CODEC_SUPPORT=fr amr efr
 BTS_200mW=23
 
 BTS0_DESCRIPTION="my test BTS 0"
@@ -104,7 +105,7 @@ BSC0_CODEC_LIST="hr3"
 # Enabled only when BSC_COUNT=2
 BSC1_IP="127.0.0.10"
 BSC1_PC="0.23.4"
-BSC1_CODEC_LIST="hr3"
+BSC1_CODEC_LIST="fr2"
 
 HNBGW_PC="0.3.0"
 HNBGW_IP="${TO_RAN_IP}"
diff --git a/net/templates/common_osmo_bsc b/net/templates/common_osmo_bsc
index ad229ed..0e88b80 100644
--- a/net/templates/common_osmo_bsc
+++ b/net/templates/common_osmo_bsc
@@ -75,9 +75,9 @@ ${foreach(BTS)}
    timeslot 4
     phys_chan_config ${TCH_TYPE}
    timeslot 5
-    phys_chan_config ${TCH_TYPE}
+    phys_chan_config ${TCH_TYPE2}
    timeslot 6
-    phys_chan_config ${TCH_TYPE}
+    phys_chan_config ${TCH_TYPE2}
    timeslot 7
     phys_chan_config PDCH
 ${foreach_end}