What is Access point name and what it does in LTE/UMTS/GPRS network?

Question

When does a UE establish an emergency PS call in UMTS/GPRS? Can someone give me some real world examples? (Other than VoIP calls to 911 etc)

Answer 1

APN is an gateway which will be used while accessing outside network like google etc. APN will allocate IP to an UE and it maintains all other outside router information to route to an outside network or an Internet.

Answer 2

I am not aware about other technologies such as GSM, WCDMA but in LTE technology, APN stands for access point name. A subscriber may have subscribed for the different services offered by its service provider. Operator segregates their services and group them through APN. For example, when LTE user wants to access internet browsing, it makes connection with internet APN and when it wants to make VoLTE call, it makes connection with different APN. These different APN names are used by network to select different packet data network for different kind of services.