Telog Expansion box

The Single-Line Telog can not be expanded beyond the single line.

The Multi-Line unit however is in fact a base unit with one Server Card and one-to-eight Line Cards installed, depending on the configuration.

A four line Multi-Line unit contains one server card and four line cards. If you go above eight lines, a expansion box is needed.

A nine line system will contain one base unit with one Server Card and eight Line Cards plus one expansion unit with one Line Card.

No additional Server Cards are needed.

The firmware is the same no matter how many lines you install in your unit.