1. Please add a new inbound route for this SIP trunk alone and define “
    “DID number” ” to enable it match all DID numbers (i.e.: define the DID number as “.” which will match any remaining digits).
  2. If this SIP trunk has several DID numbers and different DID numbers called are supposed to be led to different destinations, please add different inbound routes for each of them. If the problem still exists after the configuration, please select

    “Internal Settings”->”SIP Settings”->”Advanced Settings” and change the value of “To Field” to “To” .