`:top

A `!multi-service access node`! (`!MSAN`!), also known as a `!multi-service access gateway`! (`!MSAG`!), is a device typically installed in a `F33f`_`[telephone exchange`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Telephone_exchange]`_`f (although sometimes in a roadside `F33f`_`[serving area interface`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Serving_area_interface]`_`f cabinet`:cite-ref-1[`F5bf`_`[1`#cite-note-1]`_`f]) which connects customers' telephone lines to the `F33f`_`[core network`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Core_network]`_`f, to provide `F33f`_`[telephone`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Telephone]`_`f, `F33f`_`[ISDN`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=ISDN]`_`f, and `F33f`_`[broadband`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Broadband]`_`f such as `F33f`_`[DSL`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=DSL]`_`f all from a single platform.

Prior to the deployment of MSANs, telecom providers typically had a multitude of separate equipment including `F33f`_`[DSLAMs`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=DSLAM]`_`f to provide the various types of services to customers. Integrating all services on a single node, which typically `F33f`_`[backhauls`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Backhaul_(telecommunications)]`_`f all data streams over `F33f`_`[IP`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Internet_Protocol]`_`f or `F33f`_`[Asynchronous Transfer Mode`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Asynchronous_Transfer_Mode]`_`f can be more cost effective and may provide new services to customers more quickly than previously possible.

A typical outdoor MSAN cabinet consists of narrowband (`F33f`_`[POTS`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Plain_old_telephone_service]`_`f), broadband (`F33f`_`[xDSL`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=XDSL]`_`f) services, batteries with rectifiers, `F33f`_`[optical transmission`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Fiber-optic_communication]`_`f unit and copper `F33f`_`[distribution frame`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Distribution_frame]`_`f.

>>Contents

• `F0af`_`[See also`#see-also]`_`f

• `F0af`_`[References`#references]`_`f

-─

>>See also

• `F33f`_`[IMS`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=IP_Multimedia_Subsystem]`_`f

• `F33f`_`[Next-generation network`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Next-generation_network]`_`f

• `F33f`_`[Video-ready access device`:/page/wikibook/entry.mu`zim=wikipedia_en_all_nopic_2025-08.zim|entry_path=Video-ready_access_device]`_`f

>>References

`:cite-note-1`!1.`! `F0af`_`[↑`#cite-ref-1]`_`f "Purpose of MSAN - Multi-Service Access Node - technopediasite-Ultimate Resource For Telecom Technical Support". `*www.technopediasite.com`*. Retrieved 2020-03-06.

`c`F0af`_`[↑ Back to top`#top]`_`f`a