How to change extension no of intercom|

Crystal intercom programming codes
Crystal EPABX Intercom extension no change
• Crystal EPABX intercom...
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[@buntyrajputbuntyrajput3177]

Hello sir apni acha se samja to diya hai beetel ka phone ka bi es chag hoga kya or jo ap sab se pali button dab rya ho wo kon sa button

[@NXT-BLACK]

Thnx

[@dinkarkumarcctv8437]

108 nexa ka btao

[@krivitech]

Programing sabhi crystal machine mein same hoti hai