Physical
A separate line jack supports domestic leased-line connections. The
normal Hayes Smartmodem enclosure design provides a leased-line jack adjacent
and to the right of the dial-up jack.
Non-domestic leased-line connections may be allowed on the same jack that
is used for a switched line.
A switch enables/disables carrier level adjustment (the same switch enables
PSTN level adjustment in countries where PSTN level adjustment is allowed).
The normal Hayes Smartmodem enclosure design provides a DIP switch behind
the front end cap. The enable/disable adjustment is the second switch in
the bank and the default/adjustment disable position is the up position.
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