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Known Issues and Recommendations

Voice Platform Media Control Platform

The Known Issues and Recommendations section is a cumulative list for all 8.5.x releases of Voice Platform Media Control Platform. This section provides the latest information on known issues and recommendations associated with this product. It includes information on when individual items were found and, if applicable, corrected. The Resolved Issues section for each release describes the corrections and may list additional issues that were corrected without first being documented as Known Issues.


See also Internationalization Issues.



Media Control Platform (MCP) v8.5.178.xx does not reuse the SIP request’s TCP connection when responding to the request. Subsequently, MCP tries to initiate a new TCP connection to the FQDN or IP (and port) present in the VIA header of the request.

As a result, MCP might fail to send a SIP response to the request if the remote doesn't accept a new TCP connection. For example, the remote is a F5 load balancer or Genesys Composer.
Workaround: If you have installed MCP v8.5.178.xx, Genesys recommends you uninstall this version and install/upgrade to MCP v8.5.181.78 or a later version.

ID: GVP-35065 Found In: 8.5.178.xx Fixed In: 8.5.181.78

When the VXML application goes in a loop executing subdialog, the MCP's NGI does not end the VXML application flow on the BYE response from the caller.

ID: GVP-24181 Found In: 8.5.176.13 Fixed In: 

By default, if the RTCP line is not specified in the SDP offer, MCP assigns the value rtp port +1 to the RTCP port. When the RTCP port is explicitly offered in the SDP message, then the MCP, under very rare conditions, can terminate. To avoid it, just remove the RTCP line from the SDP offer.
Workaround: Remove the RTCP line from the offered SDP.

ID: GVP-24168 Found In: 8.5.178.78 Fixed In: 

If the TTS server does not keep the initial transport protocol (that is, does not change from UDP to TCP) within the same session, then MCP might keep using the original transport mode, causing unexpected behavior from the TTS server.
Workaround: Make sure that the TTS server does not change transport protocols during a session.

ID: GVP-24140 Found In: 8.5.178.78 Fixed In: 

Media Control Platform does not upload the unencrypted recorded files (.wav format) to the newly created S3 buckets when the option msml.record.amazonsignedpayload is set to true and when there is a redirection in the POST or PUT requests.
Workaround: Set the options msml.record.updateheader and msml.record.userecordcachedir to true.

ID: GVP-23720 Found In: 8.5.176.05 Fixed In: 8.5.178.78

Media Control Platform might terminate unexpectedly when the Service Quality Analysis (SQA) is enabled, however this is a rare scenario.

ID: GVP-23685 Found In: 8.5.150.63 Fixed In: 

In a specific scenario, Media Control Platform (MCP) might rarely generate a memory fragmentation. A memory fragmentation is generated when all of the following conditions are met:

  • MCP must perform a very high rate of fetches using TLS mutual authentication.
  • The fetched content must not be cached.
  • The TCP connections used to fetch the content are not reused, or purely reused, meaning, that for every fetch or couple of fetches a new TLS mutual authentication needs to be performed.

This issue will not be fixed.

ID: GVP-23653 Found In: 8.5.176.05 Fixed In: 

When the option msml.record.userecordcachedir is set to false (the default value), the value set in the option msml.record.updateheader is not effective.
Although this scenario is reported as an issue, this will not be fixed since it allows Media Control Platform to update the file headers appropriately.

ID: GVP-23349 Found In: 8.5.170.71 Fixed In: 

The description of the new parameter [fm]revalidatestaleresponse is incorrect inside the MCP configuration XML file (mcp.xml). You can find the correct description in the What's New section of the MCP 8.5.130.93 Release Note. (GVP-22421)

ID: GVP-22421 Found In:  8.5.1 Fixed In: 8.5.140.00

The description of the new parameter [fm]revalidatestaleresponse is incorrect inside the MCP configuration XML file (mcp.xml). You can find the correct description in the What's New section of the MCP 8.5.130.93 Release Note.

ID: GVP-22402 Found In: 8.5.010.30 Fixed In: 

Media Control Platform may terminate if typeahead DTMFs are entered before the <record> tag, in a VXML application.
Workaround: Clear all typeahead DTMFs that are present before the <record> tag.

ID: GVP-22046 Found In: Unspecified Fixed In: 8.5.1

Media Control Platform cannot limit the packet size when packetization-mode is set to zero (0), due to a limitation in the library used by MCP for H264 encoding.
This limitation causes issues when using MCP to play video on a Polycom phone using the H264 codec.

ID: GVP-21994 Found In:  8.5.120.66 Fixed In: 

You must follow these steps to enable inline grammar access by URL:

Windows IIS Environment

1. Verify that IIS is installed and started, and that MCP is installed.

2. Create and add the directory inlinetmp under C:\Program Files\Common Files\GCTI\www\gvp\mcp\<MCP_application>\grammar\.

The final two steps are automatically performed by the MCP installation in a Windows 32-bit environment:

3. Add the application mcp in IIS, which points to C:\Program Files\Common Files\GCTI\www\gvp\mcp.

4. Enable Directory Browsing and add the MIME type application/octet-stream for the extension * to the application mcp in IIS.

Linux Environment

1. Verify that MCP is installed.

2. Create the virtual directory /var/www/gvp/mcp/ by adding these lines of code to the file /etc/http/conf/httpd.conf:

Alias /mcp/ "/var/www/gvp/mcp/"
<Directory "/var/www/gvp/mcp/">
    Options Indexes MultiViews
    AllowOverride None
    Order allow,deny
    Allow from all
    ExpiresActive On
    ExpiresDefault "now plus 5 minutes"
</Directory>

3. Enable the httpd service
(run chkconfig and specify level 345 httpd on)

4. Start the httpd service
(run start in the directory /etc/init.d/httpd)

5. Add the directory inlinetmp, and grant read and access permission to all files and directories beneath /var/www/gvp/mcp/<MCP_application>/grammar/

ID: GVP-21625 Found In: 8.5.110.26 Fixed In: 8.5.120.66

Media Control Platform fails to play a stereo MP3 file for a coaching conference scenario.
Workaround: Use a mono MP3 file, and sample at 32KHz maximum.

ID: GVP-21528 Found In: 8.1.603.57 Fixed In: 8.5.130.82

Prompt playback fails when the Media Control Platform logs the ERROR message Invalid Media - Cache track header not valid for media type audio.

ID: GVP-21511 Found In: 8.5.050.13 Fixed In: 8.5.120.66

MCP may stop unexpectedly when a transfer is terminated immediately after it was started.

ID: GVP-21467 Found In: 8.5.1 Fixed In: 8.5.161.34

Resource Manager may reject a Picture Fast Update INFO request that was sent by Media Control Platform during a bridge transfer.
Workaround:

  1. Change the method in the bridge transfer to connectwhen = answered.
  2. Enable PLI (picture loss indicator) requests, instead of SIP INFO based picture fast update requests.
ID: GVP-21415 Found In: 8.5.050.38 Fixed In: 8.5.130.82

Route Unavailable Wakeup functionality does not work correctly when a DNS SRV domain resolves to more than two SRV records.
Workaround: Make sure that the DNS SRV domain resolves to two SRV records.

ID: GVP-21369 Found In: 8.5.100.85 Fixed In: 

The first SNMP Get to the Media Control Platform will time out.

ID: GVP-21357 Found In: 8.1.603.59 Fixed In: 8.5.120.66

Media Control Platform may fail to copy a recording file to a drive where MCP is not installed.

ID: GVP-21342 Found In: 8.5.100.85 Fixed In: 8.5.120.66

Media Control Platform interprets a caller-inputed DTMF incorrectly—as a different DTMF, but only in the Polish language.

ID: GVP-21297 Found In:  Fixed In: 8.5.120.66

A race condition occurs after Media Control Platform fetches a document, causing the time flag fetchaudiomininum to switch to off when the user disconnects the call.

Workaround: Disable fetch audio, or set fetchaudiominimum to 0.

ID: GVP-20355 Found In: 8.5.1 Fixed In: 

When it is under load, Media Control Platform may throw an error.internal event if the outbound call is declined quickly during a two-call-leg whisper transfer.

ID: GVP-20287 Found In: 8.1.7 Fixed In: 

The take-back of functionality by Media Control Platform at the end of a call fails when the agent disconnects, if MCP is asked to perform a media redirection transfer, when a caller's end supports only audio, but the agent's end of the call supports both audio and video.

ID: GVP-19066 Found In: 8.1.601.89 Fixed In: 

CTIC may terminate during a PRACK call flow, if the inbound call uses an offerless INVITE.

ID: GVP-19011 Found In: 8.1.601.78 Fixed In: 

Resource Manager does not support key name values that are expressed in UPPER CASE LETTERS in OPM parameters.

ID: GVP-18808 Found In: 8.1.601.10 Fixed In: 

You may observe a brief loss of audio at the beginning of a treatment, when you are using CTIC with MCP+NGI to handle treatments.
Workaround: Insert an intentional brief silence at the beginning of the VXML application treatment.

ID: GVP-18039 Found In: 8.1.502.33 Fixed In: 


Internationalization Issues

Information in this section is included for international customers.


There are no internationalization issues for this product.


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This page was last modified on October 23, 2017, at 02:06.