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3cx sip trunking

Discussion in '3CX Phone System - General' started by forbewing, Oct 22, 2017.

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  1. forbewing

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    hey am a newbie in 3cx and i recently installed it. i keep getting call failed, declined when ever a try to make an internal call via the extensions but devices can chat and do conferencing between each other.
    my question is does 3cx requires sip trunking to make internal calls?
     
  2. Rev E Miller

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    I was making calls 'in house' ext to ext without sip trunking working due to 'errors'. I'm also a newbie with this software.
     
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  3. mixig

    mixig Active Member

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    For internal calls you dont need a sip trunk.
    Check are your extensions are registered and take a look the 3cx log, what does it says.
     
  4. leejor

    leejor Well-Known Member

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    What type of sets are you using? As mentioned, check the 3CX Activity Log. It will show what happened to the call and why, it did not complete, if it made it to the PBX. Are the sets and the PBX, on the same LAN?
     
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