Changing Conference Service Options

When scheduling or re-scheduling a meeting, you can change some of the conference service default settings, such as Auto-termination when no one joins the meeting, video layout and protocols.  Conference Service Options contain the default values set by the vMeeting Administrator through Reservation Option Templates.  

Note: Which Conference Service Option Fields can be edited are controlled by vMeeting Administrators.  In the case where no editing is allowed, the default values set by vMeeting Administrators will be used.


To change conference Service Options:

1.       From the Reservation Information Page, click on the button. Options page is then displayed with different tags for Audio and Video meetings.

                                           General Options Page


                                                      Video Options Page


         General Options Tag includes settings for Conference Access Options, Attendance / Termination Options and Announcement Options.  

         Video Options Tag has various settings for Video Options and Other Options.


    2. You can change both audio and video settings as desired.

    3. Finally, click on the OK button to confirm changes.


The following tables outline each fields for Audio and Video Options.

Conference Access Options

Entry Queue Service

The vMeeting.NET phone number that user group needs to call in order to join the conference.  This field is set by vMeeting Administrator and is generally not editable for standard users.

IVR Service

Interactive Voice Response (IVR) for Video enables video and audio conference participants to use the IVR services for interactive routing to conferences and to perform interactive operations from their endpoint using DTMF codes.  The available options include None, Video - No Prompt, vMEACNFIVR and vMESNAIVR


Attendance / Termination Options

Auto Terminate

Allows you to set when the meeting is to be auto-terminated after meeting start time if no one has attended as well as after all attendees have departed the meeting.

Chairperson Required to Start Reservation

The chairperson needs to login to the meeting first in order to start the conference and enable other participants to join. 

Reservation is Terminated After Chairperson Exits

The conference will be auto-terminated when the chairperson exits the meeting.


Announcement Options

Roll Call

When a participant joins a meeting by the phone through IVR service, s/he will be able to hear who are currently in the meeting.

Entry Tone

An entry tone is played when participants first enter the meeting. 

End Time Alert Tone

An alert tone is played to indicate when meetings are about to end.  You can set when the end time tone is played to remind you about the end of meeting.

Exit Tone

En exit tone to indicate when the participate exits the meeting.


Video Options 

Line Rate

Specify the Kbps (kilo-bits-per-second) transfer rate.  It must be set to the highest transfer rate common to all participants.  The industry standard line rate is 384 kbps.

Audio Algorithm

It represents the compression measure and quality.  The higher the compression rate, the more processing is required.  

The available options are: 

auto: Auto setting.

g728: 16 bits or Siren7, with the most compressed audio.

g711_56: Without compressed audio.

g722_24: 24 bits (Siren14/G.722.1/Siren7)

g722_32: 32 bits (Siren14/G.722.1/Siren7)

g722_56: 56 bits (G.722/G.711)

In Video Voice Activated conferences, all of the participants must use the same audio algorithm in order to achieve the best audio and video quality.  Participants with endpoints that do not support the algorithm selected for the conference are connected as Secondary (Audio only).

Video Session

Various sessions allow users to choose how the video conference is conducted.  They include Switching, Transcoding, Continuous Presence, Software Continuous Presence and Advanced Layout.  Each option has different set of Video Layouts and Dual Stream Mode available to choose from.

Conference On Port

Checking this option will enable the conference and all video sites to run on the same port, hence all video sites share the same video layout and Lecture Mode is disabled.

Presentation Mode

Checking this option indicates the conference is a presentation mode conference.  A person becomes the current active speaker if they speak longer than the number of seconds defined in the next parameter - Speaker Activated in # Seconds.  The current speaker is displayed in full screen format depending on the conference video layout and Conference On Port settings.  Checking this option will disable Lecture Mode.

Speaker Activated in # Seconds

The number of seconds a person needs to speak before they become the current active speaker and displayed in full screen format.

Lecture Mode

Check this option when only one site does the speaking and the rest only require viewing function.  The site doing the presentation can view all other sites in one screen whereas other sites which only listen can see the lecturing site.  Checking this option will disable Presentation Mode.

Lecture Site

The site who does the lecturing, they can be any site from your invited video sites.

Video Layout

Layouts or formats that video site participants will display the conference in.

Auto Layout

Checking this option will enable each video site to display an auto layout when meeting starts, hence layout panel is disabled.

Dual Stream Mode

In this mode, one of the endpoints sends two video streams: Video and Data.  The video streams are handled differently by the receiving endpoint.  Different streams may be shown on separate screens.  Each option provides different set of values for Video Format, Video Protocol and Frame Rate.

The available options include:

None: Selecting this option will set Video Protocol to Auto.

People and ContentPolycom proprietary technology that works with most Polycom endpoints.

Visual Concert PC: Available with Polycom Viewstation endpoints.

Visual Concert FX: Available with Polycom Viewstation FX endpoints.

Duo Video: Available with Tandberg endpoints in which one conference is set as the video conference and the other as the presentation conference.

Video Format

CIF and QCIF are video formats used in video conferencing system.

Video Format specifies the data rate (in number of frames per second) and the resolution of each frame (number of lines in a frame and the number of pixels in each line).  Video Format is only enabled when you are in Voice Activated mode and the Video Protocol is set to H.261 or H.263.

Video Protocol

Together with Video Format and QCIF Frame Rate determine the highest common video used by all the conference participants.   

The options include:

Auto: lets the system to automatically select the appropriate compression method and enable the dynamic adjustment of the highest common video algorithm.  

H261: is the video compression standard mandatory to all codecs.  

H263: is a compression standard that provides improved video quality at a line rate lower than 384 Kbps.  This standard is not supported by all codecs.

H264: is another compression standard which incorporates H263 compression principles but is provided at half the bit rate.  Polycom iPower supports this standard.

Frame Rate

It is only enabled when you are in Voice Activated mode and the Video Protocol is set to H.216 or H.263.  If you have selected QCIF, CIF, 4CIF, 16CIF, VGA, SVGA, XGA or NTSC, select the number of frames per second rate to define the quality of the video transmission.  7.5 indicates a video quality of lower than 30 frames per second. 

Select Auto to enable the dynamic adjustment of the conference frame rate to the highest common rate.

Talk Hold Time

Indicates the minimum period, in seconds, that a participant has to speak to become the main speaker. During this period, no other participant is allowed to become the main speaker. This parameter is designed to prevent participants from becoming the main speakers when coughing or laughing or fast and frequent changes of the main speakers.

Auto Mix Depth

Indicates how many of the loudest voices speaking at the same time will be heard. The value 3 indicates that the three loudest participants speaking at the same time will be heard. The maximum number of participants that can be mixed is 5.

Dynamic Chair Control

Select Chair Control to enable an endpoint to control the conference and other conference participants.


Other Options

Quality of Service

Service QoS refers to the media transfer portion of a point to point or point to multi point call. Check this to maximize the use and allocation of bandwidth for audio, video and data.

Select this option to enable:

Automatic: select this option to allow system to dynamically set Audio, Video and TOS priorities.

Audio: Priority of Audio setting.

Video: Priority of Video setting.

TOS: Set it as Delay or None.

Auto Gain control

Optimize the volume level to compromise the speaker's distance from the microphone. 

Auto Video Bit Rate

Check this option to use the video transfer rate defined for the conference.  Individual line rates set for each video endpoints will be overwritten by this value.

Conference Lock

Checking this option will put all dialling in participants including chairperson on hold, so that no one can join the meeting until operator's help.  It should not be checked at all time.