diff --git a/lib_com/ivas_prot.h b/lib_com/ivas_prot.h
index 80996fb819f88f50a2c47220c153cd57ede3e915..46284eb325f30e6bfb818232a26118031c55a055 100644
--- a/lib_com/ivas_prot.h
+++ b/lib_com/ivas_prot.h
@@ -1198,6 +1198,13 @@ void ivas_get_ism_sid_quan_bitbudget(
     int16_t *nBits_sce_id                                       /* o  : number of Q bits for sce_id_dtx             */
 );
 
+#ifdef CR_FIX_ISM_DTX_INFINITE_CNG_ON_TRAILING_SILENCE
+void ivas_ism_dtx_limit_noise_energy_for_near_silence(
+    SCE_DEC_HANDLE hSCE[],                                      /* i/o: SCE encoder structures                      */
+    const int16_t sce_id_dtx,                                   /* i  : SCE DTX ID                                  */
+    const int16_t nchan_transport                               /* i  : number of transport channels                */
+);
+#endif
 
 /*----------------------------------------------------------------------------------*
  * DFT Stereo prototypes
diff --git a/lib_com/options.h b/lib_com/options.h
index 9a841e2ac77a382e49c040c108ce5ac87686bb4d..fc1d8a98b29bc8044aa46dc3bb4f3b6539706bfe 100755
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -226,10 +226,10 @@
 /* any switch which is non-be wrt operation points tested in selection */
 /* all switches in this category should start with "CR_" */
 #define CR_FIX_585_MASA_2TC_DTX_EXT                     /* Nokia: issue 585: fixes transition artifacts in MASA 2TC DTX by applying correct condition */
+#define CR_FIX_ISM_DTX_INFINITE_CNG_ON_TRAILING_SILENCE /* FhG: fix for cng in ISM DTX on sudden silence periods */
 
 /* ##################### End NON-BE CR switches ########################### */
 
-
 /* ################## End DEVELOPMENT switches ######################### */
 
 /* clang-format on */
diff --git a/lib_dec/ivas_dec.c b/lib_dec/ivas_dec.c
index b8552427d82be9a92d7ddcaaf52c7e07167f640a..70136e9592514497307a36cb1898aa451c6b625c 100644
--- a/lib_dec/ivas_dec.c
+++ b/lib_dec/ivas_dec.c
@@ -196,6 +196,16 @@ ivas_error ivas_dec(
             {
                 return error;
             }
+#ifdef CR_FIX_ISM_DTX_INFINITE_CNG_ON_TRAILING_SILENCE
+
+            /* decode dominant object first so the noise energy of the other objects can be limited */
+            if ( ( error = ivas_sce_dec( st_ivas, st_ivas->hISMDTX.sce_id_dtx, &output[st_ivas->hISMDTX.sce_id_dtx], output_frame, nb_bits_metadata[st_ivas->hISMDTX.sce_id_dtx] ) ) != IVAS_ERR_OK )
+            {
+                return error;
+            }
+
+            ivas_ism_dtx_limit_noise_energy_for_near_silence( st_ivas->hSCE, st_ivas->hISMDTX.sce_id_dtx, st_ivas->nchan_transport );
+#endif
         }
         else if ( st_ivas->ism_mode == ISM_MODE_PARAM )
         {
@@ -214,10 +224,21 @@ ivas_error ivas_dec(
 
         for ( n = 0; n < st_ivas->nchan_transport; n++ )
         {
+#ifdef CR_FIX_ISM_DTX_INFINITE_CNG_ON_TRAILING_SILENCE
+            /* for DTX frames, dominant object has already been decoded before */
+            if ( !( ( ivas_total_brate == IVAS_SID_5k2 || ivas_total_brate == FRAME_NO_DATA ) && n == st_ivas->hISMDTX.sce_id_dtx ) )
+            {
+                if ( ( error = ivas_sce_dec( st_ivas, n, &output[n], output_frame, nb_bits_metadata[n] ) ) != IVAS_ERR_OK )
+                {
+                    return error;
+                }
+            }
+#else
             if ( ( error = ivas_sce_dec( st_ivas, n, &output[n], output_frame, nb_bits_metadata[n] ) ) != IVAS_ERR_OK )
             {
                 return error;
             }
+#endif
 
             /* HP filtering */
             hp20( output[n], output_frame, st_ivas->mem_hp20_out[n], output_Fs );
diff --git a/lib_dec/ivas_ism_dtx_dec.c b/lib_dec/ivas_ism_dtx_dec.c
index 1c48050bee21382019bfebade5f3832a449e299a..fada7caaecd56a2c8658c8188d6133b2af0cf6b1 100644
--- a/lib_dec/ivas_ism_dtx_dec.c
+++ b/lib_dec/ivas_ism_dtx_dec.c
@@ -31,6 +31,7 @@
 *******************************************************************************************************/
 
 #include <stdint.h>
+#include <math.h>
 #include "options.h"
 #include "ivas_prot.h"
 #include "prot.h"
@@ -156,3 +157,51 @@ ivas_error ivas_ism_dtx_dec(
 
     return IVAS_ERR_OK;
 }
+
+
+#ifdef CR_FIX_ISM_DTX_INFINITE_CNG_ON_TRAILING_SILENCE
+/*-------------------------------------------------------------------*
+ * ivs_ism_dtx_limit_noise_energy_for_near_silence()
+ *
+ * for DTX frames where the energy of the sent noise estimate of the dominant object
+ * is near silence, limit the other objects CNG energies to the same level
+ *-------------------------------------------------------------------*/
+
+void ivas_ism_dtx_limit_noise_energy_for_near_silence(
+    SCE_DEC_HANDLE hSCE[],        /* i/o: SCE encoder structures          */
+    const int16_t sce_id_dtx,     /* i  : SCE DTX ID                      */
+    const int16_t nchan_transport /* i  : number of transport channels    */
+)
+{
+    float fac, cng_noise_nrg_obj, cng_noise_nrg_dominant;
+    int16_t ch, cng_noise_level_len;
+    HANDLE_FD_CNG_COM hFdCngCom;
+
+    hFdCngCom = hSCE[sce_id_dtx]->hCoreCoder[0]->hFdCngDec->hFdCngCom;
+    cng_noise_level_len = hFdCngCom->stopFFTbin - hFdCngCom->startBand;
+    cng_noise_nrg_dominant = dotp( hFdCngCom->cngNoiseLevel, hFdCngCom->cngNoiseLevel, cng_noise_level_len );
+
+    if ( cng_noise_nrg_dominant < 1.f )
+    {
+        for ( ch = 0; ch < nchan_transport; ch++ )
+        {
+            if ( ch == sce_id_dtx )
+            {
+                continue;
+            }
+
+            hFdCngCom = hSCE[ch]->hCoreCoder[0]->hFdCngDec->hFdCngCom;
+            cng_noise_level_len = hFdCngCom->stopFFTbin - hFdCngCom->startBand;
+            cng_noise_nrg_obj = dotp( hFdCngCom->cngNoiseLevel, hFdCngCom->cngNoiseLevel, cng_noise_level_len );
+
+            if ( cng_noise_nrg_obj > cng_noise_nrg_dominant )
+            {
+                fac = sqrtf( cng_noise_nrg_dominant / cng_noise_nrg_obj );
+                v_multc( hFdCngCom->cngNoiseLevel, fac, hFdCngCom->cngNoiseLevel, cng_noise_level_len );
+            }
+        }
+    }
+
+    return;
+}
+#endif
diff --git a/lib_enc/ivas_ism_dtx_enc.c b/lib_enc/ivas_ism_dtx_enc.c
index b9272ad2453a67d0d8928ecc269bbca03acbbd1b..c502bedf6cd299161e7fe9c45fb9729ec8263f07 100644
--- a/lib_enc/ivas_ism_dtx_enc.c
+++ b/lib_enc/ivas_ism_dtx_enc.c
@@ -312,7 +312,6 @@ void ivas_ism_get_sce_id_dtx(
     SCE_ENC_HANDLE hSCE[MAX_SCE],  /* i/o: SCE encoder structure            */
     const int16_t nchan_transport, /* i  : number of transport channels     */
     const int16_t input_frame      /* i  : input frame length per channel   */
-
 )
 {
     float tmp_energy[MAX_NUM_OBJECTS];