Mobile Application Part (MAP) also known as GSMMAP

Signaling Protocol for Mobile Applications


The Mobile Application Part (MAP) is an SS7 protocol that provides an application layer for the various nodes in GSM and UMTS mobile core networks and GPRS core networks to communicate with each other in order to provide services to users. The Mobile Application Part is the application-layer protocol used to access the Home Location Register, Visitor Location Register, Mobile Switching Center, Equipment Identity Register, Authentication Centre, Short message service center and Serving GPRS Support Node (SGSN).


  • SendAuthenticationInfoArg
  • SendAuthenticationInfoRes
  • UpdateLocationArg
  • UpdateLocationRes
  • InsertSubscriberDataArg
  • InsertSubscriberDataRes


  • 3GPP TS 09.02 (MAP v1, MAP v2)
  • 3GPP TS 29.002 (MAP v3) - MAP for 3G UMTS & GSM (Release 99 and later)