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High Concealment Ratio; Low MOS reported by phones using Transcoder

One of our customers is seeing an issue where the phones are reporting a low MOS score when
the call needs a Transcoder for the call.
The bad MOS corresponds to a high CCR (Cumulative Concealment Ratio),  which is also aproblem
if silence suppression (VAD) is enabled.  (The phones think the silence is packet loss.)

Could the transcoder problem be a similar type of thing?   The time it takes to transcode is being
considered as loss?

If so, are there any setting on the phone or transcoder device that can be tweaked??

Below is one example from our logs.
Customer will gladly provide any information needed.

Thanks,
--tom

Here is one example:

  Transcoder addr: 134.32.34.18
  Phone:                 10.248.18.81
  CM:                    163.184.222.34

163.184.222.34 -> 10.248.18.81/50729 StartMediaTransmission[0x8a] cid: 47526316
163.184.222.34 -> 10.248.18.81/50729 DestIP/RTPPort: 134.32.34.18/30534; ConnectTime: 0x4eef7eded2889; cid: 47526316
163.184.222.34 -> 10.248.18.81/50729 CallInfoDynamic[0x14a] CallInfo: +40314036707->60377248440[60377248440];
                                                                                                       redirect: 0; ciType: 1; cid: 47526316

          <<<<<<<<<<<<  Call takes place here >>>>>>>>>>>>>>>>>>>>>>>>>>>>


163.184.222.34 -> 10.248.18.81/50729 CloseReceiveChannel[0x106] Closing channel for cid: 47526316; pid: 33557208
163.184.222.34 -> 10.248.18.81/50729 StopMediaTransmission[0x8b] DisconnectTime: 0x4eef91ef4e43e cid: 47526316; pid: 33557208 163.184.222.34 -> 10.248.18.81/50729 ConnectionStatisticsReq[0x107] Requesting stats for cid: 47526316; dirNum: 60377248440
163.184.222.34 -> 10.248.18.81/50729 ClearPromptStatus[0x113] Clearing prompt cid: 47526316
163.184.222.34 -> 10.248.18.81/50729 CallStateMsg[0x111] State:'On Hook'; li:1; cid: 47526316
163.184.222.34 <- 10.248.18.81/50729 ConnectionStatisticsRes[0x23] snt:255882; rcv:216100; lost:4; jtr:2; lat:0; dirNum: 60377248440
163.184.222.34 <- 10.248.18.81/50729  VQ: 'MLQK=3.7001;MLQKav=2.8505;MLQKmn=2.0000;MLQKmx=3.7001;ICR=0.0000;CCR=0.1554;ICRmx=1.0000;CS=1352;SCS=1219;MLQKvr=0.95'

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