diff --git a/controllers/discussions.php b/controllers/discussions.php
index 127b0da..461bd19 100755
--- a/controllers/discussions.php
+++ b/controllers/discussions.php
@@ -85,7 +85,7 @@
 					'date' => htmlspecialchars($sended['at']),
 					'text' => htmlspecialchars($sended['content']),
 					'type' => 'sended',
-					'delivered' => ($sended['delivered'] ? true : false),
+					'status' => ($sended['delivered'] ? 'delivered' : ($sended['failed'] ? 'failed' : '')),
 				);
 			}
 
diff --git a/controllers/internalConsole.php b/controllers/internalConsole.php
index 2ae77bc..200e993 100755
--- a/controllers/internalConsole.php
+++ b/controllers/internalConsole.php
@@ -156,11 +156,13 @@
 						//Pour plus de précision, on remet la date à jour en réinstanciant l'objet DateTime (et on reformatte la date, bien entendu)
 						$now = new DateTime();
 						$now = $now->format('Y-m-d H:i:s');
+
 						//On peut maintenant ajouter le SMS
-						if (!$db->insertIntoTable('sendeds', ['at' => $now, 'target' => $number, 'content' => $scheduled['content']]))
+						if (!$db->insertIntoTable('sendeds', ['at' => $now, 'target' => $number, 'content' => $scheduled['content'], 'before_delivered' => ceil(mb_strlen($scheduled['content'])/160)]))
 						{
 							echo 'Impossible d\'inserer le sms pour le numero ' . $number . "\n";
 						}
+
 						$id_sended = $db->lastId();
 						
 						//Commande qui envoie le SMS
@@ -246,23 +248,42 @@
 					}
 
 					//On gère les accusés de reception
-					if (trim($text) == 'Delivered')
+					if (trim($text) == 'Delivered' || trim($text) == 'Failed')
 					{
-						echo 'Delivered SMS for ' . $number . "\n";
-						$this->wlog('Delivered SMS for ' . $number);
+						echo 'Delivered or Failed SMS for ' . $number . "\n";
+						$this->wlog('Delivered or Failed SMS for ' . $number);
 
-						//On récupère les SMS par encore validé, uniquement sur les dernières 24h
+						//On récupère les SMS pas encore validé, uniquement sur les dernières 12h
 						$now = new DateTime();
-						$interval = new DateInterval('P1D');
+						$interval = new DateInterval('P12H');
 						$sinceDate = $now->sub($interval)->format('Y-m-d H:i:s');
 	
-						if (!$sendeds = $db->getFromTableWhere('sendeds', ['target' => $number, 'delivered' => false, '>at' => $sinceDate], 'at', false, 1))
+						if (!$sendeds = $db->getFromTableWhere('sendeds', ['target' => $number, 'delivered' => false, 'failed' => false, '>at' => $sinceDate], 'at', false, 1))
 						{
 							continue;
 						}
 
-						$db->updateTableWhere('sendeds', ['delivered' => true], ['id' => $sendeds[0]['id']]);
-						echo "Sended SMS id " . $sendeds[0]['id'] . " to delivered status\n";
+						$sended = $sendeds[0];
+
+						//On gère les echecs
+						if (trim($text) == 'Failed')
+						{
+							$db->updateTableWhere('sendeds', ['before_delivered' => 0, 'failed' => true], ['id' => $sended['id']]);
+							echo "Sended SMS id " . $sended['id'] . " pass to failed status\n";
+							continue;
+						}
+
+						//On gère le cas des messages de plus de 160 caractères, lesquels impliquent plusieurs accusés
+						if ($sended['before_delivered'] > 1)
+						{
+							$db->updateTableWhere('sendeds', ['before_delivered' => $sended['before_delivered'] - 1], ['id' => $sended['id']]);
+							echo "Sended SMS id " . $sended['id'] . " before_delivered decrement\n";
+							continue;
+						}
+
+						//Si tout est bon, que nous avons assez d'accusés, nous validons !
+						$db->updateTableWhere('sendeds', ['before_delivered' => 0, 'delivered' => true], ['id' => $sended['id']]);
+						echo "Sended SMS id " . $sended['id'] . " to delivered status\n";
 						continue;
 					}
 					
diff --git a/createDatabase.sql b/createDatabase.sql
index 2586787..964d872 100755
--- a/createDatabase.sql
+++ b/createDatabase.sql
@@ -27,7 +27,9 @@ CREATE TABLE IF NOT EXISTS sendeds
 	at DATETIME NOT NULL,
 	target VARCHAR(12) NOT NULL,
 	content VARCHAR(1000) NOT NULL,
+	before_delivered INT NOT NULL,
 	delivered BOOLEAN NOT NULL DEFAULT FALSE,
+	failed BOOLEAN NOT NULL DEFAULT FALSE,
 	PRIMARY KEY (id)
 );
 
diff --git a/templates/discussions/show.php b/templates/discussions/show.php
index 4ec68ba..f4f0b3f 100755
--- a/templates/discussions/show.php
+++ b/templates/discussions/show.php
@@ -86,7 +86,7 @@
 							'<div class="clearfix message-container">' +
 								'<div class="discussion-message message-sended">' +
 									'<div class="discussion-message-text">' + message.text + '</div>' +
-									'<div class="discussion-message-date">' + message.date + (message.delivered ? ' <span class="fa fa-check-circle fa-fw text-success"></span>' : '' ) + '</div>' +
+									'<div class="discussion-message-date">' + message.date + (message.status ? (message.status == 'delivered' ? ' <span class="fa fa-check-circle fa-fw text-success"></span>' : '<span class="fa fa-times-circle fa-fw text-danger"></span>' ) : '' ) + '</div>' +
 								'</div>' +
 							'</div>';
 							break;