Dismiss Notice
We would like to remind you that we’re updating our login process for all 3CX forums whereby you will be able to login with the same credentials you use for the Partner or Customer Portal. Click here to read more.

Internal Extensions dialing DID loop out and back in

Discussion in '3CX Phone System - General' started by tsukraw, Nov 26, 2014.

Thread Status:
Not open for further replies.
  1. tsukraw

    tsukraw New Member

    Mar 9, 2012
    Likes Received:
    Hey guys,
    So have a customer with multiple locations running off 1 3CX system.
    Users at each location are so used to dialing the 7/10 digit version to call between offices.
    They no longer need to do that and just need to call the Ring Group of the remote office but they continue to forget this.
    When they call the DID the call goes out to our SIP Carrier and right back into our system.
    This ends up taking 2 call licenses and appears as used minutes with our SIP carrier.

    Can anyone think of a way to either to prevent this from happening?
    I initially thought of using a outbound rule to strip the 7/10 digits and replace with the internal Ring Group number but 3cx only allows for up to 9 digits stripped.

    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  2. craigreilly

    craigreilly Well-Known Member

    Feb 1, 2012
    Likes Received:
    I think a loopback provider would even use 2 licenses. (Provider to - incoming calls to that ring group - apply to outbound rule).
    I have suggested in the ideas forum to check the inbound rules before checking the outbound rules to see if there is a match...
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. ian.watts

    ian.watts Active Member

    Apr 8, 2011
    Likes Received:
    I observed the same.. tried to train against it.. and finally was "less nice" by adding a BLOCK ALL CALLS rule for each DID to prevent. Else.. a finely-crafted dial plan might help.. but would still be incomplete on phones which don't leverage such a dial plan.
  4. leejor

    leejor Well-Known Member

    Jan 22, 2008
    Likes Received:
    Did you try a loop trunk?

    Back in 2011, Sy posted the "trick" (his words). It was in the Partner Forum, which you may not have access to, so rather than post the link, I'll quote him..

    "Re: internal users dialing did's instead of extension

    Postby SY » 25 May 2011 Wed 06:04:21,
    Technically, the trick can be implemented using loopback SIP trunk.
    1. create SIP trunk with
    2. create outbound rule(s) for this trunk. They should intecept all DID numbers
    3. attach existing inbound DIDs rules to this trunk

    If everything is done correctly then all outgoing calls addressed to DID numbers will go to the loop back trunk and then returned as incoming calls which will be routed by inbound DID rules."

    This was in response to someone having the same issue as yourself, internal callers dialling the entire DID number..
Thread Status:
Not open for further replies.