diff --git a/docs/configuring-playbook-matrix-bridge-sms.md b/docs/configuring-playbook-matrix-bridge-sms.md
index 2809fb03..8a91ab93 100644
--- a/docs/configuring-playbook-matrix-bridge-sms.md
+++ b/docs/configuring-playbook-matrix-bridge-sms.md
@@ -18,8 +18,9 @@ matrix_sms_bridge_gammu_modem: "/dev/serial/by-id/myDeviceId"
 matrix_sms_bridge_database_password: ""
 # (optional) a room id to a default room
 matrix_sms_bridge_default_room: "" 
-# (optional) gammu reset frequency (see https://wammu.eu/docs/manual/smsd/config.html#option-ResetFrequency)
+# (optional) gammu reset frequencies (see https://wammu.eu/docs/manual/smsd/config.html#option-ResetFrequency)
 matrix_sms_bridge_gammu_reset_frequency: 3600
+matrix_sms_bridge_gammu_hard_reset_frequency: 0
 # (optional) group with unix read and write rights to modem
 matrix_sms_bridge_modem_group: 'dialout'
 ```
diff --git a/roles/matrix-bridge-sms/defaults/main.yml b/roles/matrix-bridge-sms/defaults/main.yml
index 4019f7be..77435be8 100644
--- a/roles/matrix-bridge-sms/defaults/main.yml
+++ b/roles/matrix-bridge-sms/defaults/main.yml
@@ -50,6 +50,7 @@ matrix_sms_bridge_default_room: ''
 matrix_sms_bridge_gammu_modem: ''
 matrix_sms_bridge_modem_group: 'dialout'
 matrix_sms_bridge_gammu_reset_frequency: 0
+matrix_sms_bridge_gammu_hard_reset_frequency: 0
 
 
 matrix_sms_bridge_configuration_yaml: |
@@ -125,6 +126,7 @@ matrix_sms_bridge_gammu_configuration: |
   OutboxFormat = detail
   TransmitFormat = auto
   ResetFrequency = {{ matrix_sms_bridge_gammu_reset_frequency }}
+  HardResetFrequency = {{ matrix_sms_bridge_gammu_hard_reset_frequency }}
   debugLevel = 1
   LogFile = /data/log/smsd.log
   DeliveryReport = no