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NEEDED CCITT - FUNCTIONS (FREQUENCIES)
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FUNC.- FREQUENCE Hz - SHORT INFO !
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1    -   700 &  900 - TO DIAL "1"
2    -   700 & 1100 - TO DIAL "2"
3    -   900 & 1100 - TO DIAL "3"
4    -   700 & 1300 - TO DIAL "4"
5    -   900 & 1300 - TO DIAL "5"
6    -  1100 & 1300 - TO DIAL "6"
7    -   700 & 1500 - TO DIAL "7"
8    -   900 & 1500 - TO DIAL "8"
9    -  1100 & 1500 - TO DIAL "9"
0    -  1300 & 1500 - TO DIAL "0"
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C.11 -   700 & 1700 - INWARD OPERATOR!
C.12 -   900 & 1700 - DELAY  OPERATOR!
KP1  -  1100 & 1700 - TERMINAL CALL!
KP2  -  1300 & 1700 - TRANSIT  CALL!
ST   -  1500 & 1700 - END OF PULSING!
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DHLS -         1850 - DISABLE HOLDLINE
                         SWITCHING!
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