Black Box MD1641A Manual De Usuario
122
SERIES II INTELLIGENT DATA/FAX MODEMS
6.
Set DIP-Switch # 3 UP on both local and remote modems. This
changes the transmit level to -15dB and this change is necessary
to operate in back-to-back mode
changes the transmit level to -15dB and this change is necessary
to operate in back-to-back mode
7.
Turn on both units and wait for carrier detect (CD).
8.
Short out pins 2 and 3 on the RS-232C interface on the remote
modem (with a paper clip or some other metal device, for
example).
modem (with a paper clip or some other metal device, for
example).
Figure 8-4A. Back-to-Back Test Cabling
ON
OFF
INTERFACE
LEASE
POWER
PSTN
PHONE
VOLUME
ON
OFF
INTERFACE
LEASE
POWER
PSTN
PHONE
VOLUME
ON
OFF
INTERFACE
LINE
POWER
PHONE
VOLUME
ON
OFF
INTERFACE
LINE
POWER
PHONE
VOLUME
Remote sites:
Short Pins 2 and 3
of the RS-232
interface