2) If your modem has non-volatile memory (NVRAM) for its initial power-up settings:
a) Connect the modem's power input to the power source that will be used during its normal op-
eration (necessary for step 3d below, otherwise any convenient power source).
b) Connect the modem's serial port to a terminal or personal computer capable of sending the
modem command strings.
c) Send the required initialization strings to put the modem in automatic answer mode and to
set the appropriate carrier loss disconnect time (register S10 for Hayes compatible modems).
d) Send the required initialization strings to put the modem in the desired baud rate (see sec-
tion 8.1.3.2)
e) Save the current setup in the modem's NVRAM.
f) Connect the modem to the RSM cabinet with the supplied cable and power up the modem.
3) If your modem has none of the above:
a) Connect the modem's power input to the power source that will be used during its normal op-
eration (necessary for step 3d below, otherwise any convenient power source).
b) Connect the modem's serial port to a terminal or personal computer capable of sending the
modem command strings.
c) Send the required initialization strings to put the modem in automatic answer mode and to
set the appropriate carrier loss disconnect time (register S10 for Hayes compatible modems).
d) Send the required initialization strings to put the modem in the desired baud rate (see section
8.1.3.2).
e) WITHOUT DISCONNECTING POWER to the modem, connect the modem's serial port to the
RSM cabinet.
At this point, the modem should be connected to the RSM cabinet, already powered up, and the
automatic answer mode enabled (usually shown as an AA indicator), the hang-up on carrier loss
set, and the correct baud rate set. The cable designed for the the SCI module should cause the
DTR indicator on the modem to be enabled. The baud rate setting in the RSM module and the
baud rate setting in the modem's link rate should be the same.
The initialization string 'ATS0=1' (not including quotes) will set a Hayes compatible modem to an-
swer after 1 ring.
The consequence of using a modem that does not power up in auto answer mode is that if the
power to the modem is interrupted and resumed, a remote caller will not be able to call into the
RSM cabinet. The baud rate settings may also be affected.
010-030-C0 Rev E Page 38 of 42
ARGUS TECHNOLOGIES