--- title: "Agent telephone connection and equipment requirements" slug: "agent-telephone-connection-and-equipment-requirements" updated: 2026-07-22T15:16:30Z published: 2026-07-23T10:07:46Z canonical: "help.8x8.com/agent-telephone-connection-and-equipment-requirements" --- > ## Documentation Index > Fetch the complete documentation index at: https://help.8x8.com/llms.txt > Use this file to discover all available pages before exploring further. # Agent telephone connection and equipment requirements To receive telephone calls from the **8x8 Contact Center** application, agents must have access to one of the following types of telephone connection: - Public switched telephone network (PSTN) connection. - Voice over IP (VoIP) connection. For both VoIP or PSTN telephones, the telephone assigned to the **8x8 Contact Center** must: - Always be available to receive incoming calls. - Not forward calls to a non-**8x8 Contact Center** voicemail box before **8x8 Contact Center** can offer an incoming call to an agent, and forward that call to an agent's **8x8 Contact Center** voicemail box if no agent accepts the call.