diff --git a/app/assets/javascripts/app/controllers/cti.coffee b/app/assets/javascripts/app/controllers/cti.coffee
index 9244701b9..ea65e59dc 100644
--- a/app/assets/javascripts/app/controllers/cti.coffee
+++ b/app/assets/javascripts/app/controllers/cti.coffee
@@ -5,8 +5,9 @@ class App.CTI extends App.Controller
   elements:
     '.js-callerLog': 'callerLog'
   events:
-    'click .js-check': 'done'
-    'click .js-newUser': 'newUser'
+    'click .js-check':    'done'
+    'click .js-checkAll': 'doneAll'
+    'click .js-newUser':  'newUser'
   list: []
   backends: []
   meta:
@@ -191,10 +192,23 @@ class App.CTI extends App.Controller
 
     @updateNavMenu()
 
+  doneAll: =>
+
+    # get id's of all unchecked caller logs
+    @logIds = $('.js-callerLog').map(->
+      return $(@).data('id') if !$(@).find('.js-check').prop('checked')
+    ).get()
+
+    @ajax(
+      type: 'POST'
+      url:  "#{@apiPath}/cti/done/bulk"
+      data: JSON.stringify({ids: @logIds})
+    )
+
   done: (e) =>
     element = $(e.currentTarget)
-    id = element.closest('tr').data('id')
-    done = element.prop('checked')
+    id      = element.closest('tr').data('id')
+    done    = element.prop('checked')
     @ajax(
       type:  'POST'
       url:   "#{@apiPath}/cti/done/#{id}"
diff --git a/app/assets/javascripts/app/views/cti/caller_log.jst.eco b/app/assets/javascripts/app/views/cti/caller_log.jst.eco
index b3551483f..ea3d40ffd 100644
--- a/app/assets/javascripts/app/views/cti/caller_log.jst.eco
+++ b/app/assets/javascripts/app/views/cti/caller_log.jst.eco
@@ -1,7 +1,13 @@
 <table class="table table-striped table-hover">
   <thead>
     <tr>
-      <th style="width: 40px;"></th>
+      <th style="width: 40px;">
+        <label class="checkbox-replacement checkbox-replacement--fullscreen">
+          <input type="checkbox" class="js-checkAll">
+          <%- @Icon('checkbox', 'icon-unchecked') %>
+          <%- @Icon('checkbox-checked', 'icon-checked') %>
+        </label>
+      </th>
       <th><%- @T('From') %></th>
       <th><%- @T('To') %></th>
       <!--<th style="width: 100px;"><%- @T('Queue') %></th>-->
@@ -13,7 +19,7 @@
   </thead>
   <tbody>
     <% for item in @list: %>
-    <tr class="u-center<% if item.done: %> is-grayed-out<% end %>" data-id="<%- item.id %>">
+    <tr class="u-center js-callerLog <% if item.done: %> is-grayed-out<% end %>" data-id="<%- item.id %>">
       <td class="table-checkbox u-positionOrigin">
         <label class="checkbox-replacement checkbox-replacement--fullscreen<% if item.disabled is true: %> is-disabled<% end %>">
           <input type="checkbox" class="js-check"<% if item.done: %> checked<% end %><% if item.disabled is true: %> disabled<% end %>>
diff --git a/app/controllers/cti_controller.rb b/app/controllers/cti_controller.rb
index 4d22833bf..a868bb6d3 100644
--- a/app/controllers/cti_controller.rb
+++ b/app/controllers/cti_controller.rb
@@ -4,6 +4,7 @@ class CtiController < ApplicationController
   prepend_before_action { authentication_check(permission: 'cti.agent') }
 
   # list current caller log
+  # GET /api/v1/cti/log
   def index
     backends = [
       {
@@ -29,6 +30,7 @@ class CtiController < ApplicationController
   end
 
   # set caller log to done
+  # POST /api/v1/cti/done/:id
   def done
     log = Cti::Log.find(params['id'])
     log.done = params['done']
@@ -36,4 +38,17 @@ class CtiController < ApplicationController
     render json: {}
   end
 
+  # sets for all given ids the caller log to done
+  # POST /api/v1/cti/done/bulk
+  def done_bulk
+
+    log_ids = params['ids'] || []
+    log_ids.each do |log_id|
+      log = Cti::Log.find(log_id)
+      log.done = true
+      log.save!
+    end
+    render json: {}
+  end
+
 end
diff --git a/config/routes/cti.rb b/config/routes/cti.rb
index af3bcf21d..a898b0023 100644
--- a/config/routes/cti.rb
+++ b/config/routes/cti.rb
@@ -1,6 +1,8 @@
 Zammad::Application.routes.draw do
+  api_path = Rails.configuration.api_path
 
-  match '/api/v1/cti/log',        to: 'cti#index', via: :get
-  match '/api/v1/cti/done/:id',   to: 'cti#done',  via: :post
+  match api_path + '/cti/log',       to: 'cti#index',     via: :get
+  match api_path + '/cti/done/bulk', to: 'cti#done_bulk', via: :post
+  match api_path + '/cti/done/:id',  to: 'cti#done',      via: :post
 
 end
diff --git a/spec/factories/cti/log.rb b/spec/factories/cti/log.rb
index eb9db6173..4673e3288 100644
--- a/spec/factories/cti/log.rb
+++ b/spec/factories/cti/log.rb
@@ -5,6 +5,7 @@ FactoryBot.define do
     from      { '4930609854180' }
     to        { '4930609811111' }
     call_id   { (Cti::Log.pluck(:call_id).map(&:to_i).max || 0).next } # has SQL UNIQUE constraint
+    done      { false }
 
     trait :with_preferences do
       preferences { Cti::CallerId.get_comment_preferences(from, 'from')&.last }
diff --git a/spec/requests/integration/cti_spec.rb b/spec/requests/integration/cti_spec.rb
index 19fd138ec..4aeeaa0d6 100644
--- a/spec/requests/integration/cti_spec.rb
+++ b/spec/requests/integration/cti_spec.rb
@@ -795,5 +795,42 @@ RSpec.describe 'Integration CTI', type: :request do
       expect(log.duration_talking_time).to be_nil
 
     end
+
+    it 'flags caller_log as done' do
+
+      cti_log1 = create(:cti_log)
+      log = Cti::Log.find(cti_log1.id)
+      expect(log.done).to eq(false)
+
+      authenticated_as(agent_user)
+      post "/api/v1/cti/done/#{cti_log1.id}", params: {
+        done: true
+      }
+      expect(response).to have_http_status(:ok)
+
+      log = Cti::Log.find(cti_log1.id)
+      expect(log.done).to eq(true)
+    end
+
+    it 'flags all caller_logs as done via done_bulk' do
+
+      cti_log1 = create(:cti_log)
+      cti_log2 = create(:cti_log)
+
+      log = Cti::Log.find(cti_log1.id)
+      expect(log.done).to eq(false)
+
+      authenticated_as(agent_user)
+      post '/api/v1/cti/done/bulk', params: {
+        ids: [cti_log1.id, cti_log2.id]
+      }
+
+      expect(response).to have_http_status(:ok)
+      log1 = Cti::Log.find(cti_log1.id)
+      expect(log1.done).to eq(true)
+
+      log2 = Cti::Log.find(cti_log2.id)
+      expect(log2.done).to eq(true)
+    end
   end
 end