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What is an LBO level on a T1 channel bank? Why would I need to adjust it?

April 26, 2017Bank channel LBO level T1

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What is an LBO level on a T1 channel bank? Why would I need to adjust it?

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To ensure that a T1 channel bank will work on a large variety of lines, it is adjustable over range of analog levels. LBO levels are usually set by dip switches or potentiometers within the channel bank. It’s essential that these be adjusted correctly so that DTMF and caller-ID can be decoded properly. Audio fidelity is also increased when the line is properly adjusted. To adjust the level, measure the line with a TIMS set and set it to a maximum level of +0dBm.