Call Trace Support

Intrado V9-1-1 call traces begin with the Network Operations Center (NOC) staff collecting and reviewing the Call Detail Record (CDR) for the call in question. The CDR is analyzed and reviewed to determine where the call entered and exited the Intrado network.

The next step the NOC technical team takes during a call trace is to collect the Emergency Services Routing Number (ESRN), Emergency Services Query Key (ESQK) and the call time stamp for the call in question. This information is used to review call information logs on the Intrado Positioning Server in order to determine the calling number which can be given to the VoIP Service Provider (VSP) for the VSP to trace the call within its own network.

The NOC technical team will also review the call supervision information provide from the network elements to gain a better view and understanding of how the call in question moved and progressed through the Intrado network. Call supervision offers the features and functionality to view information of the call, such as who initiated the call disconnect/hang up, along with the corresponding disconnect codes that are associated with the call.