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Phone call quality issues

Hello - We have been getting reports of general poor quality phone calls and I need some assistance in figuring out what can be done to resolve the issues. I have had reports of occassional 'tinnyness' and folks stating that it sounds like they are underwater. I have also had reports of placing calls on hold and not being able to retrieve them which I read somewhere that it could be related to poor voice quality. I have gone through the settings on our call manager servers and all of the settings are set to the suggested values. I'm really just looking for suggestions as to where I should start looking to make modifications to improve the voice call quality so if anyone has any I would like to hear them. Thanks


Re: Phone call quality issues

You need to isolate the problem, to first PSTN or internal calls, gateway, site, phone model firmware, load, topology,...timeo fthe day...

Here you will find some good references so youc an start.