diff --git a/addons/crm/crm_lead.py b/addons/crm/crm_lead.py
index 0a824aef83e..81c0cad9254 100644
--- a/addons/crm/crm_lead.py
+++ b/addons/crm/crm_lead.py
@@ -272,6 +272,10 @@ class crm_lead(base_stage, format_address, osv.osv):
         'color': 0,
     }
 
+    _sql_constraints = [
+        ('check_probability', 'check(probability >= 0 and probability <= 100)', 'Probability should be between 0-100% !')
+    ]
+
     def create(self, cr, uid, vals, context=None):
         obj_id = super(crm_lead, self).create(cr, uid, vals, context)
         section_id = self.browse(cr, uid, obj_id, context=context).section_id
@@ -281,6 +285,17 @@ class crm_lead(base_stage, format_address, osv.osv):
         self.create_send_note(cr, uid, [obj_id], context=context)
         return obj_id
 
+    def view_phone_calls(self, cr, uid, ids, context=None):
+        mod_obj = self.pool.get('ir.model.data')
+        act_obj = self.pool.get('ir.actions.act_window')
+        partner = self.pool.get('crm.lead').browse(cr, uid, ids[0], context=context).partner_id.id
+
+        result = mod_obj.get_object_reference(cr, uid, 'crm', 'crm_case_categ_phone_incoming0')
+        id = result and result[1] or False
+        result = act_obj.read(cr, uid, [id], context=context)[0]
+        result.update({'context':{'search_default_partner_id': partner}})
+        return result
+
     def onchange_stage_id(self, cr, uid, ids, stage_id, context=None):
         if not stage_id:
             return {'value':{}}
diff --git a/addons/crm/crm_lead_view.xml b/addons/crm/crm_lead_view.xml
index 465982ee3aa..1ccb0a6f29d 100644
--- a/addons/crm/crm_lead_view.xml
+++ b/addons/crm/crm_lead_view.xml
@@ -105,14 +105,6 @@
         <!--
             LEADS
         -->
-        <act_window
-                id="act_crm_opportunity_crm_phonecall_new"
-                name="Phone calls"
-                groups="base.group_sale_salesman"
-                res_model="crm.phonecall"
-                view_mode="tree,calendar,form"
-                context="{'default_duration': 1.0 ,'default_opportunity_id': active_id}"
-                view_type="form"/>
 
         <act_window
                 id="act_crm_opportunity_crm_meeting_new"
@@ -141,8 +133,8 @@
                 </header>
                 <sheet>
                     <div class="oe_right oe_button_box" name="buttons">
-                        <button type="action"
-                            name="%(act_crm_opportunity_crm_phonecall_new)d"
+                        <button type="object"
+                            name="view_phone_calls"
                             string="Phone Calls"/>
                     </div>
                     <div class="oe_title">