diff --git a/app/Classes/Protocol/EMSI.php b/app/Classes/Protocol/EMSI.php
index ab9a498..c2b6a59 100644
--- a/app/Classes/Protocol/EMSI.php
+++ b/app/Classes/Protocol/EMSI.php
@@ -943,10 +943,35 @@ final class EMSI extends BaseProtocol implements CRCInterface,ZmodemInterface
 				// Peek for the next 2 chars
 				do {
 					$iac = $this->client->read(10,1,MSG_PEEK);
+					$iaccmd = NULL;
+
+					switch (ord($iac)) {
+						case 0x00:
+							if ($iaccmd === 0xfb) {
+								Log::debug(sprintf('%s:  - IAC WILL BINARY [%02x]',self::LOGKEY,ord($iac)));
+
+								// Config with DO
+								$this->client->send(chr(0xff).chr(0xfd).$iac);
+							} elseif ($iaccmd === 0xfd) {
+								Log::debug(sprintf('%s:  - IAC DO BINARY [%02x]',self::LOGKEY,ord($iac)));
+
+								// Config with WILL
+								$this->client->send(chr(0xff).chr(0xfb).$iac);
+								$this->client->iac_bin = true;
+							}
+
+						case 0xfb:
+							Log::debug(sprintf('%s:  - IAC WILL [%02x]',self::LOGKEY,ord($iac)));
+							$iaccmd = ord($iac);
+							break;
+
+						case 0xfd:
+							Log::debug(sprintf('%s:  - IAC DO [%02x]',self::LOGKEY,ord($iac)));
+							$iaccmd = ord($iac);
+							break;
 
-					switch ($iac) {
 						default:
-							Log::debug(sprintf('%s:  - IAC [%02x]',self::LOGKEY,$iac));
+							Log::debug(sprintf('%s:  - IAC [%02x]',self::LOGKEY,ord($iac)));
 
 							$iac = NULL;
 					}
diff --git a/app/Classes/Sock/SocketClient.php b/app/Classes/Sock/SocketClient.php
index cb3e61b..fd6db86 100644
--- a/app/Classes/Sock/SocketClient.php
+++ b/app/Classes/Sock/SocketClient.php
@@ -197,6 +197,7 @@ final class SocketClient {
 		return match ($key) {
 			'address_remote', 'port_remote' => $this->{$key},
 			'cps', 'speed' => Arr::get($this->session,$key),
+			'iac_bin' => Arr::get($this->session,$key),
 			'rx_free' => self::RX_BUF_SIZE-$this->rx_left,
 			'rx_left' => strlen($this->rx_buf),
 			'tx_free' => self::TX_BUF_SIZE-strlen($this->tx_buf),
@@ -210,6 +211,7 @@ final class SocketClient {
 		switch ($key) {
 			case 'cps':
 			case 'speed':
+			case 'iac_bin':
 				$this->session[$key] = $value;
 				break;