I typically use 1XXXX for system numbers, but I have a situation where we need to use [1-8]XXX for user extensions. I don't want to simply lower the inter-digit timeout and use 1XXX. So, I see my obvious option as:
- Use 1XXX for system numbers and free up some ranges for user extensions.
However, I'd like to free up all 1XXX for user extensions. Will using 0XXXX for System Numbering cause any issues other than with inter-digit timeout with '0' for operator?
You should be fine, it will view it as 0100. I tend to use a mixture of a dedicated System Partition and very long system numbers for future proof in case we ever have DN`s beginning with 0 in your case . So if you were to use 0 as a system prefix then make it 0000xxxxx so at least you will only make use of one potential DDI, DID number of 0000 obviously any other number with 000x will rely on the EOD timeout but at least you future proof