SIP trunking issue: authentication problems (CUCM and own developed PBX)

Discussion in 'VoIP' started by RajeshCO27, Mar 26, 2015.

  1. RajeshCO27

    RajeshCO27

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    Hey,

    I have built a PBX by using the Ozeki SDK and and want to connect it to my existing Cisco Unified Communications Manager PBX by using SIP trunking.
    By following the instructions of this Cisco setup guide (voip-sip-sdk.com/p_42-cisco-unified-communications-manager-voip.html) I have successfully connent the SDK to CUCM, but SIP trunking does not work, because of authentication issues. It sends a 403 response to the Cisco request.

    Can anybody give me a checklist to debug or any tips that help to get ahead?

    Thanks a lot, guys!
     
    RajeshCO27, Mar 26, 2015
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