diff --git a/agent_based/inv_opengear_base.py b/agent_based/inv_opengear_base.py
index ade8a8288bf9da575a955a51d79a026873c9cd96..f160ccc6d058f94e595f2605a6c724e190cfff7b 100644
--- a/agent_based/inv_opengear_base.py
+++ b/agent_based/inv_opengear_base.py
@@ -5,10 +5,14 @@
 #
 # Author: thl-cmk[at]outlook[dot]com
 # URL   : https://thl-cmk.hopto.org
-# Date  : 2021-12-25
+# Date  : 2022-06-28
+# file  : inv_opengear_base
 #
 # opengear base inventory
 #
+# 2022-11-08: fixed crash in parse function empty inv_data
+#
+#
 # sample string_table
 # [
 #  [
@@ -36,10 +40,39 @@ from cmk.base.plugins.agent_based.agent_based_api.v1 import (
     startswith,
 )
 
+# from the OG-PRODUCTS-MIB, LAST-UPDATED "202005200000Z"
+#
+# ogCM4001 OBJECT IDENTIFIER ::= { ogProducts 1 }
+# ogCM4002 OBJECT IDENTIFIER ::= { ogProducts 2 }
+# ogCM4008 OBJECT IDENTIFIER ::= { ogProducts 3 }
+# ogCM41xx OBJECT IDENTIFIER ::= { ogProducts 10 }
+# ogCM71xx OBJECT IDENTIFIER ::= { ogProducts 11 }
+# ogCM7196 OBJECT IDENTIFIER ::= { ogProducts 12 }
+# ogSD4001 OBJECT IDENTIFIER ::= { ogProducts 20 }
+# ogSD4002 OBJECT IDENTIFIER ::= { ogProducts 21 }
+# ogSD4008 OBJECT IDENTIFIER ::= { ogProducts 22 }
+# ogSD4001DW OBJECT IDENTIFIER ::= { ogProducts 23 }
+# ogSD4002DX OBJECT IDENTIFIER ::= { ogProducts 24 }
+# ogCD OBJECT IDENTIFIER ::= { ogProducts 30 }
+# ogCMx86 OBJECT IDENTIFIER ::= { ogProducts 31 }
+# ogCMS61xx OBJECT IDENTIFIER ::= { ogProducts 40 }
+# ogLighthouse OBJECT IDENTIFIER ::= { ogProducts 41 }
+# ogLighthouse5 OBJECT IDENTIFIER ::= { ogProducts 42 }
+# ogIM4004 OBJECT IDENTIFIER ::= { ogProducts 50 }
+# ogIM42xx OBJECT IDENTIFIER ::= { ogProducts 60 }
+# ogIM72xx OBJECT IDENTIFIER ::= { ogProducts 61 }
+# ogKCS61xx OBJECT IDENTIFIER ::= { ogProducts 70 }
+# ogACM500x OBJECT IDENTIFIER ::= { ogProducts 80 }
+# ogACM550x OBJECT IDENTIFIER ::= { ogProducts 81 }
+# ogACM700x OBJECT IDENTIFIER ::= { ogProducts 90 }
+# ogACM70045 OBJECT IDENTIFIER ::= { ogProducts 91 }
+# ogOperationsManager OBJECT IDENTIFIER ::= { ogProducts 101 }
+#
+
 _opengear_models = {
     ('.1.3.6.1.4.1.25049.1.11', 18): 'CM7116',  # 16 serial + 2 usb lines
     ('.1.3.6.1.4.1.25049.1.11', 34): 'CM7132',  # 32 serial + 2 usb lines
-    ('.1.3.6.1.4.1.25049.1.11', 48): 'CM7148',  # 48 serial + 2 usb lines
+    ('.1.3.6.1.4.1.25049.1.11', 50): 'CM7148',  # 48 serial + 2 usb lines
     ('.1.3.6.1.4.1.25049.1.60', 16): 'IM4216',  # 16 serial lines
 }
 
@@ -47,7 +80,10 @@ _opengear_models = {
 def parse_inv_opengear_base(string_table: List[StringTable]) -> Optional[List]:
     inv_data, ogSerialPortCTS, sysObjectID = string_table
 
-    firmware_version, serial_number = inv_data[0]
+    try:
+        firmware_version, serial_number = inv_data[0]
+    except IndexError:
+        return
 
     if serial_number == 'N/A':
         serial_number = ''
@@ -98,7 +134,7 @@ register.snmp_section(
             ]
         ),
         SNMPTree(
-            base='.1.3.6.1.4.1.25049.17.2.1',  # OG-STATUSv2-MIB
+            base='.1.3.6.1.4.1.25049.17.2.1',  # OG-STATUSv2-MIB:orgSerialÃœprtEntry
             oids=[
                 '19',  # ogSerialPortCTS. ogSerialPortIndex don't exist so we use CTS to get the number of lines
             ]
diff --git a/inv_opengear_base.mkp b/inv_opengear_base.mkp
index d33e312e6215a71f8be0b8e6fdb285a4c589e40c..8ca96d87869fcd9fcfbff50fccf5e90e8d1a5d26 100644
Binary files a/inv_opengear_base.mkp and b/inv_opengear_base.mkp differ
diff --git a/packages/inv_opengear_base b/packages/inv_opengear_base
index ea3488e898bcfdc1016dd07e7cfbeb0844e7d447..c52f130d4c569e740c584116f5bcd9843e3a7126 100644
--- a/packages/inv_opengear_base
+++ b/packages/inv_opengear_base
@@ -14,7 +14,7 @@
  'name': 'inv_opengear_base',
  'num_files': 1,
  'title': 'opengear base inventory',
- 'version': '20220628.v.0.01',
+ 'version': '20221108.v.0.01a',
  'version.min_required': '2.0.0',
  'version.packaged': '2021.09.20',
  'version.usable_until': None}
\ No newline at end of file