Microtel Series 100 - Manual (Page 17)

III. OPERATIONS
A. SYSTEM FAMILIARIZATION AND KEY FUNCTION SUMMARY
The power switch for the system is located on the main controller Board, within the
system. It is important to note that when 120 vac power is connected to the system,
this switch does not remove 120 vac power from the main Controller Board--it is
always present unless the circuit breaker, which the INSTALLER must supply, is
turned off!
There are eight indicators in the middle of the system front panel. These LEDs will
indicate the state of the fault channels, which the system is intended to monitor.
Behind the lower left section of the system front panel, lies the system speaker. This
speaker allows words the system synthesizes to be heard, as well as telephone line
sounds when the system is in the SPEAKERPHONE or INTERCOM mode.
Located in the lower middle portion of the system's front panel is the system
keyboard. A description of each of the system's keys and their functions now follows:
HALT
The HALT key will abort any operation in process, and return the system to the Halt
mode as indicated by the Halt indicator. In this mode, fault conditions will not be
acted upon by the system. However, it is still possible to call the system. The system
will answer the call and respond to any command sequence properly entered.
RUN
The RUN key will place the system in a run mode as indicated by the Run indicator. If
fault conditions exist, the system will begin placing telephone calls if telephone
numbers have been programmed into the system. Use of the Delay key in conjunction
with the RUN key will cause the system to execute a delayed entry into the Run
mode--which may be programmed to be up to 99 minutes. (see the operation section
of this manual for more information)
SPEAKER
The SPEAKERphone key causes the system to enter the Speakerphone mode as
indicated by the Speakerphone LED. If the system was not on line when this key was
depressed, the system will allow key dialing from the front panel digit keys. In this
mode, the system acts and performs like a speakerphone, allowing normal two-way
conversations. The speakerphone operation may be terminated by depressing the
HALT key.
If the system had placed or received a call, and was on line when this key was
depressed, the automatic speech generated by the system will be interrupted, and the
operator will be "on line" with whom ever called or was called by the system.
Note that if this key is operated without a proper telephone line connection, some
feedback noise may occur. The system relies upon the presence of a telephone line
to optimize the telephone interface balancing. If the system balance is degraded by
trying to go off-hook with no telephone line connected, a portion of the speakerphone
signal is improperly coupled back into the receive circuitry.
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