how to extend 4 digit extension limit in asteriskNOW 1.4 to 5 digits?

Posted on 2011-04-21
Last Modified: 2012-06-21
how to extend 4 digit extension limit in asteriskNOW 1.4 to 5 digits?
Question by:kavlins
    LVL 38

    Expert Comment

    This is product specific question. The best chance is ask their support.

    Here is the extension.conf
    LVL 20

    Accepted Solution


    I sense you are actually trying to find a strategy on how to migrate your dialplan from 4 to 5 digits correct?

    If so, the way I have seen this implemented in large Telcos, is to add a number from left to right. So if your extensions are

    (extensions starting with 9 are usually not used to avoid overlaps with access code 9)

    Then the new dialplan will look like this, using 2 as the new digit in front:


    Now you have exhausted all extensions from the 20000-28999, and can start assigning extensions in the 29000-29999 range that you couldn't have before. Users won't feel that big a difference and the dialplan will remain consistent vs just adding 5 digit extensions all over the place to the existent 4 digit exts.

    Hope it helps.
    LVL 6

    Author Comment


    Thats a solution we thought about but couldnt proceed with it because we have branch offices with NEC Aspire pbx systems and different flavors of Asterisks. Therefore the dialplans or outbound routing has to be changed on all. Although this solution doesnt work for our scenario, yours is a good solution..
    LVL 20

    Expert Comment

    by:José Méndez

    I guess I don't fully understand the requirement then. Do you have overlapping patterns on different sites?
    LVL 6

    Author Comment

    no there is no overlapping patterns but for example , if my site is using 29xx to 21xx currently other site does 39xx to 31xx and so on. Prefixing a 2 on outbound routes will not conflict between any sites bcoz 29xx  will be 229xx , 39xx with be 339xx but the problem i understand is its such a headache to redo all sites with hundreds of extensions. Also i wonder the NEC Aspire PBX system would allow 5 digit dialing. This exists in couple of our sites.
    Sorry i didnt realize these issues when posting this question.
    LVL 6

    Author Closing Comment

    Doesnt actually solve my situation but can be a solution since no one else commented.

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