You need to take caution when making ANY changes in MMC 805. Usually changes made there are on recommendation from Samsung Tech support only. This is because the levels there do not just apply to trunks and can adversly affect other areas of the system. It says that your in the UK where I know the phone company lines are not as good as they are in the US. I would see if the phone company could do a decible level check on your lines first to see if it is low. If it is ask them to crank it up a notch. They can control the Db level on your lines there. Another option to prove it is not the Samsung system would be to hook up a regular phone directly on the line and see if you have the same problem. This would prove it to the phone company or the system. Let us know how you make out.

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