diff --git a/example/default-suites.conf b/example/default-suites.conf
index 7ff8470..8d692fa 100644
--- a/example/default-suites.conf
+++ b/example/default-suites.conf
@@ -53,8 +53,10 @@
 - voice:nanobts+band-900+mod-bts0-ts-tchf
 - voice:nanobts+band-900+mod-bts0-ts-tchh
 - voice:nanobts+band-900+mod-bts0-dynts-ipa
+- voice:nanobts+band-900+mod-bts0-numtrx2+mod-bts0-chanallocdescend
 - gprs:nanobts+band-900
 - gprs:nanobts+band-900+mod-bts0-dynts-ipa
+- gprs:nanobts+band-900+mod-bts0-numtrx2+mod-bts0-chanallocdescend
 - smpp
 - aoip_smpp
 - aoip_encryption
diff --git a/example/defaults.conf b/example/defaults.conf
index 73188d5..61b09fb 100644
--- a/example/defaults.conf
+++ b/example/defaults.conf
@@ -54,11 +54,22 @@
     - phys_chan_config: TCH/F
     - phys_chan_config: TCH/F
     - phys_chan_config: TCH/F
-    - phys_chan_config: TCH/F
-    - phys_chan_config: TCH/F
+    - phys_chan_config: PDCH
+    - phys_chan_config: PDCH
 
 osmo_bts_octphy:
   max_trx: 2
 
 nanobts:
   max_trx: 2
+  trx_list:
+  - {}
+  - timeslot_list:
+    - {}
+    - {}
+    - {}
+    - {}
+    - {}
+    - {}
+    - phys_chan_config: TCH/F # nanobts only supports PDCH in TRX0.
+    - phys_chan_config: TCH/F
diff --git a/example/scenarios/mod-bts0-chanallocdescend.conf b/example/scenarios/mod-bts0-chanallocdescend.conf
new file mode 100644
index 0000000..78cd02c
--- /dev/null
+++ b/example/scenarios/mod-bts0-chanallocdescend.conf
@@ -0,0 +1,3 @@
+modifiers:
+  bts:
+  - channel_allocator: descending