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green
 

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:%                              THE GREEN BOX                               %:

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[THE GREEN BOX : BIOC AGENT 003'S COURSE IN BASIC TELECOMMUNICATIONS/ PART 6]

 

 

   The Green Box generates useful tones such as COIN COLLECT, COIN RETURN, and

RINGBACK.  These are the tones that ACTS or the TSPS operator would send to

the CO when appropriate.  Unfortunately, the green box cannot be used at a 

fortress station, but must be used by the CALLED party.  The tones (hz) are:

 

   COIN COLLECT      700  +  1100

   COIN RETURN      1100  +  1700

   RINGBACK          700  +  1700

(Pause)...More(y/n/ns)? ns
 

   Before the called party sends any of these tones, an operator released

signal should be sent to alert the MF detectors at the CO.  This can be done

by sending 900 + 1500 Hz or a single 2600 Hz wink (90 ms) followed by a 60 ms

gap and then the appropriate signal for at least 900 ms.  Also, do not forget

that the initial rate is collected shortly before the 3 minute period is up.





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