stripping of numbers according to extension

[kelvin]

thanks so much,i made it.now i have the main number 0709xxxxxx and i would wish the last three numbers(000) and replaced with the extension number i have given my agents eg when extension 500 make an outbound call the main number to be 0709yyyyyy

Edited by Vali_3CX: Please keep the topic you've created
https://www.3cx.com/community/threads/stripping-numbers.55845/
And avoid posting real phone numbers.