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Permissive
In permissive mode, the modem transmits a maximum signal level
of -9 dBm. Signal loss between the modem and telephone company
central office is not controlled.
Programmable
Programmable mode corrects for the signal level loss between the
modem and the telephone company central office. This is done by
setting the modem transmit output signal level with a fixed-value
programming resistor selected and installed in the jack by the tele-
phone company. This allows the output signal to reach the central
office at the optimum level of -12 dBm. Jack arrangements for this
mode are the RJ45S (Programmable) and RJ41S (Universal). The
RJ41S has a switch option that must be selected to Programmed
(P). Cable PN 61020192-0401 is used to connect the LINE jack on
the back of the modem to the RJ41S or RJ45S wall jack.
Leased Line Connection
Leased lines use either a 2-wire or 4-wire connection. The telephone
company will install the leased line and wall jack at your site. The line
connects to the modem at the 8-position AUX jack.
Figure 2-4 illustrates the typical hook-up of the modem for operation
over private leased lines with dial backup.
V.3400
Installation
2-7
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