PSTN integration
- Hi,
My technology team complaints about the voice quality in the Live Meeting session with PSTN integration. Is there any limitation or prerequisite to be met?
- Moved byLu Zou-MSFTMSFT, ModeratorTuesday, March 31, 2009 7:46 AM
Answers
Hi,
When the external audio conference participants who don’t have Live Meeting client want to participate in the meeting, they need to join the meeting through a third-party Audio Conferencing Provider (ACP). The provider enables conferencing over an external Public Switched Telephone Network (PSTN) bridge.
Office Live Meeting 2007 is the main client that supports ACP conferences. It provides user interfaces to control various aspects of the audio conference hosted on the external PSTN bridge such as the “mute” function.
If you want to know how to configure PSTN integration in Live Meeting, please read the page 37-39 of the document:
Microsoft Office Live Meeting 2007 Service Testing and Troubleshooting Guide
http://office.microsoft.com/en-us/help/HA102389001033.aspx#4
For more reference, please refer to:
http://office.microsoft.com/en-us/livemeeting/FX101729061033.aspxHope this will help youLu Zou
- Marked As Answer byLu Zou-MSFTMSFT, ModeratorWednesday, February 25, 2009 1:11 AM
All Replies
Hi
Although there is no such limitation or prerequisite when we use PSTN integration in LiveMeeting, the voice quality could be bad due to other reasons. Hybrid Echo is an important factor which affects the voice quality in PSTN audio:
Hybrid or line echo is an electrical signal reflection that occurs during a two-to-four-wire conversion in the analog tail circuit at the edge of the PSTN. Although hybrid echo is not generated in a pure VoIP network, the majority of VoIP calls continue to originate or terminate in the PSTN or a cellular network, or via the PSTN to another VoIP network. A robust hybrid echo cancellation solution will completely eliminate hybrid echo bidirectionally for VoIP calls that traverse a PSTN hybrid. The best solutions offer fast and stable convergence, and fully compensate for the very long network tail delays that can be encountered end-to-end.
As this problem is not caused by LiveMeeting system itself, maybe you need to consult some experts who are familiar with PSTN or ask for help from the PSTN solution company.
Lu Zou
- Hi,
Could you help me to understand this a bit more clearly. sorry am not from technology and i deal Live meeting from user end perspective. Could you explain me how this PSTN integration happens in LIVE Meeting? I believe webex does this through Mediatone Network, similarly how does it happen in Live Meeting?
Hi,
When the external audio conference participants who don’t have Live Meeting client want to participate in the meeting, they need to join the meeting through a third-party Audio Conferencing Provider (ACP). The provider enables conferencing over an external Public Switched Telephone Network (PSTN) bridge.
Office Live Meeting 2007 is the main client that supports ACP conferences. It provides user interfaces to control various aspects of the audio conference hosted on the external PSTN bridge such as the “mute” function.
If you want to know how to configure PSTN integration in Live Meeting, please read the page 37-39 of the document:
Microsoft Office Live Meeting 2007 Service Testing and Troubleshooting Guide
http://office.microsoft.com/en-us/help/HA102389001033.aspx#4
For more reference, please refer to:
http://office.microsoft.com/en-us/livemeeting/FX101729061033.aspxHope this will help youLu Zou
- Marked As Answer byLu Zou-MSFTMSFT, ModeratorWednesday, February 25, 2009 1:11 AM
- move to media discussion queue
- Hi Dear all:
I have one question, that is how to set Audio Conferencing Provider (ACP) with the Live Meeting Console or OCS Server?
Does anyone can give some tips? or give some guide doc? or teach me?
many thanks
mslin
