This document provides instructions for configuring a Panasonic KX-TDE100 IP-PBX to integrate with SIP trunking services using an Edgewater Networks EdgeMarc E-SBC. The configuration includes setting the PBX's IP and gateway settings, enabling SIP registration and codecs, configuring SIP trunk parameters and authentication, assigning DIDs and caller IDs to extensions, and setting dialing patterns to access the SIP trunks. Completing these steps will allow the PBX to place and receive calls using the SIP trunking service.