| This feature searches the low-low B channel selection algorithm for an available B channel, starting each new search at the lowest numbered B channel of the lowest numbered DS1 facility in the PRI trunk group, and it continues in ascending order. In addition, this feature searches the high-high B channel selection algorithm for an available B channel, starting each new search at the highest numbered B channel of the highest numbered DS1 facility in the PRI trunk group, and it continues in descending order.
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