# Glossary: NAP ### TelcoBridges and Network Access Points The Network Access Point (NAP) allows for [service access points (SAPs)](/appendices/appendix-a-glossary/glossary-sap.md), [ISDN](/hidden-pages/glossary-isdn.md) stacks, and SS7 ISUP interfaces to be associated as a combined resource for one type of access. A NAP is used to represent a collection of voice endpoints, for example: a group of SS7 CICs, ISDN controlled timeslots, [SIP](/configuration-details/configuration-by-web-portal-category/sip.md) outgoing proxy to a specific provider, and more. NAPs are, later in the configuration process, used to define how calls are routed out of the Tmedia system. ### NAP Types * SS7 (Signaling System 7) * ISDN (Integrated Systems Digital Network) * CAS (Channel associated signaling) * SIP (Session Initiation Protocol) * VOIP (Voice Over IP) * TDM (Time-Division Multiplexing) * Media-only (VoIP or TDM) for H248 controlled resources --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://prosbcdocs.telcobridges.com/appendices/appendix-a-glossary/glossary-nap.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.