The Department of Defense, specifically the Naval Surface Warfare Center Port Hueneme Division, is seeking vendors to provide TDM Centrex landline services and a one Gigabit MPLS circuit configured with SIP voice services. The objective of this procurement is to transition from outdated TDM technology to a secure Internet Protocol (IP) based solution, facilitating the porting of existing corporate Direct Inward Dial (DiD) phone numbers to a Government-managed VoIP infrastructure. This initiative is crucial for modernizing the communication capabilities of the Command, ensuring operational efficiency and security. Interested parties must submit their company details, product capabilities, and cost estimates by October 21, 2024, to the designated contacts, Demi DeGarmo and Keith A. Shaner, via the specified formats.