Removing a digit in specific position

Asterisk Asterisk Support
1

Hello
I’m using a prefix string and a prefix number separated by ‘-’. I’d like to remove this specific character
For example:
system-111-987 => I want to call the 111987

With the cut digit ${EXTEN:7} I’m calling 111-987. I need somethig to cut first 7 digits AND the 11th digit
Can someone help me?

2

Use the FILTER function. Don’t worry about the exact position.

3

With the cut digit ${EXTEN:7} I’m calling 111-987. I need somethig to cut first 7 digits AND the 11th digit
Can someone help me?

Here is what you need:
{EXTEN:0:7}
{EXTEN:0:7}

4

My typing mistake, here is what you need:
{EXTEN:0:7}
{EXTEN:0:11}

5

For your original requirement, although I still think you should use FILTER, I believe you need, ${EXTEN:0:3}${EXTEN:4:3}

This is fairly basic stuff and you should be able to validate the above without actually trying it.

6

Thank you all. All yours suggestions help me a lot.
With a system exten ‘system-111-987’, I solved in this way:
${EXTEN:7:3} → This take 111
${EXTEN:12} → This take 987

In the end the concatenation:
${EXTEN:7:3}${EXTEN:12} → 111987

7

${FILTER(0-9,${EXTEN})}

Should do the same, and will not break in case someone decide to replace system with world, or change - to _, or if you change the length of the numbers.