diff --git a/ivas_processing_scripts/audiotools/wrappers/networkSimulator.py b/ivas_processing_scripts/audiotools/wrappers/networkSimulator.py
index fa1b7509bab016fa1f643f564a45293a3da1cc0d..649de216ef36a0e24e93c89ac44bbe0c60359765 100644
--- a/ivas_processing_scripts/audiotools/wrappers/networkSimulator.py
+++ b/ivas_processing_scripts/audiotools/wrappers/networkSimulator.py
@@ -31,6 +31,7 @@
 #
 
 import os.path
+import logging
 from pathlib import Path
 from typing import Optional, Union
 
@@ -90,6 +91,7 @@ def network_simulator(
     out_bitstream: Union[str, Path],
     n_frames_per_packet: int,
     offset: int,
+    logger: Optional[logging.Logger] = None,
 ) -> None:
     """
     Wrapper for networkSimulator_g192 binary to apply error patterns for the bitstream processing
@@ -106,6 +108,8 @@ def network_simulator(
         Number of frames per paket [1,2]
     offset: Optional[int]
         delay offset
+    logger: Optional[logging.Logger]
+        logger
     """
 
     # find binary
@@ -133,7 +137,7 @@ def network_simulator(
     ]
 
     # run command
-    run(cmd)
+    run(cmd, logger=logger)
 
     return
 
@@ -145,6 +149,7 @@ def apply_network_simulator(
     error_profile: Optional[int] = None,
     n_frames_per_packet: Optional[int] = None,
     offset: Optional[int] = 0,
+    logger: Optional[logging.Logger] = None,
 ) -> None:
     """
     Function to apply a network simulator profile to a bitstreaam
@@ -163,6 +168,8 @@ def apply_network_simulator(
         Number of frames per paket
     offset: Optional[int]
         delay offset
+    logger: Optional[logging.Logger]
+        logger
     """
 
     if error_pattern is None:
@@ -192,7 +199,7 @@ def apply_network_simulator(
 
     # apply error pattern
     network_simulator(
-        error_pattern, in_bitstream, out_bitstream, n_frames_per_packet, offset
+        error_pattern, in_bitstream, out_bitstream, n_frames_per_packet, offset, logger
     )
 
     return
diff --git a/ivas_processing_scripts/processing/chains.py b/ivas_processing_scripts/processing/chains.py
index fc696d922dd1d6819be38b637db2c9d8f77dcf5f..7f54330d7c634d9839db5d33d177166966b2334d 100755
--- a/ivas_processing_scripts/processing/chains.py
+++ b/ivas_processing_scripts/processing/chains.py
@@ -256,7 +256,7 @@ def get_processing_chain(
                     "type": cfg.tx.get("type", None),
                     "error_pattern": cfg.tx.get("error_pattern", None),
                     "error_profile": cfg.tx.get("error_profile", None),
-                    "n_frames_per_packet": cfg.tx.get("n_frames_per_packet", 1),
+                    "n_frames_per_packet": cfg.tx.get("n_frames_per_packet", None),
                 }
             else:
                 raise ValueError(
diff --git a/ivas_processing_scripts/processing/ivas.py b/ivas_processing_scripts/processing/ivas.py
index ddfbc20743efcfdce440e895b41d67982bc58879..b2cae46bf38d6ea0f720a19f3f48cae302ec117f 100755
--- a/ivas_processing_scripts/processing/ivas.py
+++ b/ivas_processing_scripts/processing/ivas.py
@@ -225,6 +225,7 @@ class IVAS(Processing):
                     self.tx["error_pattern"],
                     self.tx["error_profile"],
                     self.tx["n_frames_per_packet"],
+                    logger=logger,
                 )
                 # add -voip cmdline option to the decoder
                 # TODO: tracefile also?