High Quality Content by WIKIPEDIA articles! The Um interface is the air interface for the GSM mobile telephone standard. It is the interface between the mobile station (MS) and the Base transceiver station (BTS). It is called Um because it is the mobile analog to the U interface of ISDN. Um is defined in the GSM 04.xx and 05.xx series of specifications. Um can also support GPRS packet-oriented communication.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.