diff --git a/app/Classes/Protocol/EMSI.php b/app/Classes/Protocol/EMSI.php
index 3393f8a..412d181 100644
--- a/app/Classes/Protocol/EMSI.php
+++ b/app/Classes/Protocol/EMSI.php
@@ -963,6 +963,24 @@ final class EMSI extends BaseProtocol implements CRCInterface,ZmodemInterface
 							$iaccmd = NULL;
 							break;
 
+						// Suppress Go Ahead
+						case 0x03:
+							if ($iaccmd === 0xfb) {
+								Log::debug(sprintf('%s:  - IAC WILL SUPPRESS-GO-AHEAD [%02x]',self::LOGKEY,ord($iac)));
+
+								// Config with DO
+								$this->client->send(chr(0xff).chr(0xfd).$iac);
+							} elseif ($iaccmd === 0xfd) {
+								Log::debug(sprintf('%s:  - IAC DO SUPPRESS-GO-AHEAD [%02x]',self::LOGKEY,ord($iac)));
+
+								// Config with WILL
+								$this->client->send(chr(0xff).chr(0xfb).$iac);
+								$this->client->iac_bin = true;
+							}
+
+							$iaccmd = NULL;
+							break;
+
 						case 0xfb:
 							Log::debug(sprintf('%s:  - IAC WILL [%02x]',self::LOGKEY,ord($iac)));
 							$iaccmd = ord($iac);
@@ -981,7 +999,7 @@ final class EMSI extends BaseProtocol implements CRCInterface,ZmodemInterface
 					}
 
 					if ($iaccmd) {
-						$iac = $this->client->read(10,1);
+						$iac = ord($this->client->read(10,1));
 						$ch = NULL;
 					}