B-34
Model 820 Technical Reference Manual
Modem Control Mode
The modem control mode enables the Model 820 to automati-
cally dial out upon an exceedance or a low memory condition.
This mode also enables the Model 820 to answer the phone so
that instructions can be received. The modem must be Hayes
(TM) compatible and set to respond to commands using
numeric codes (non-verboses). Setup parameters 154 to 157
control this feature.
Modem Mode (154)
If the Modem Mode is [Yes], the Model 820 will dial the
Phone# on the events selected by the Dial Out Mode defined
below.
Dial Out Mode (155)
• None: The Model 820 will not dial a computer for any rea-
son.
• Excd: The Model 820 will dial a computer to report when
an illegal exceedance is logged into memory. An illegal
exceedance is when Excd Lmax > RMS Excd Level 2
(parameter 62).The phone will also be dialed if the mem-
ory is low.
• Phone#: The valid characters in Phone# are those recog-
nized by the modem to which the Model 820 is attached
and generally include:
W: will wait for another dial tone
P: selects pulse dialing
T: selects tone dialing
,: will pause dialing for 2 s
space or -: used to make the number more readable.
Example: T9W 1-412-555-1212 indicates to use tone dialing,
dial 9 for an outside line, wait until the dial tone is detected,
and then dial the number.
Monitor Number
The monitor number is used to specifically address the moni-
tor.
