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Joined: Oct 2007
Posts: 54
Member
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Member
Joined: Oct 2007
Posts: 54 |
Hi everyone: 1st time post, just discovered this forum, it is awesome! Thank you all...
At one of my good, multi-location customers, we have installed an XTS-ip with 12 CO's, 55 phones, in-skin HD VM.
There is a huge problem with the volume on conference calls. Caller A (on the XTS) calls Caller B, then conferences in Caller C. Callers B & C cannot hear each other. That's it in a nutshell.
We have had ATT check the line voltage, gotten Vodavi tech support to turn up the XTS's internal "master" volumes, etc., etc. -- all to no avail.
Does anyone have any ideas?
Thanks in advance Gregg M.
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Joined: Jan 2005
Posts: 15,399 Likes: 18
Moderator-Vertical, Vodavi, 1A2, Outside Wire
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Moderator-Vertical, Vodavi, 1A2, Outside Wire
Joined: Jan 2005
Posts: 15,399 Likes: 18 |
Gregg, no matter which system you are using, you can't expect end-to-end call quality. Caller B arrives to your system via a POTS line. So does caller C. This means that they are now connected via double the loop length back to the central office. This can't be overcome, again regardless of the system. Tying two POTS lines together to create a conference call effectively doubles the line loss, thus halving the quality of the B-C connection.
The only thing that you can do is to convert the local lines to PRI or T1 trunks. The line loss is eliminated, especially with a PRI since it's 100% digital trunking. Fortunately, by having an XTS, your system has such capability.
Don't allow any service provider or equipment manufacturer tell you otherwise. Loop loss can be amplified (hence the steps that you have taken), but all that's happening there is that the amplitude of a poor analog signal is being magnified. That usually makes the situation worse.
Ed Vaughn, MBSWWYPBX
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