A interfaceThis is the interface within the GSM network architecture between the BSS (Base Station Subsystem) and an MSC (Mobile Switching Centre). The interface... View more
A Link - Access linkAccess link is a SL (Signalling Link) that connects a signalling end point i.e. a SP (Signalling Point) to an STP (Signalling Transfer Point). Only me... View more
A-GNSS - Assisted Global Navigation Satellite SystemGNSS based location systems such as GPS (Global Positioning System) may take a significant amount of time to accurately calculate a device's location,... View more
A-keyA secret, 64bit pattern stored in the MS (Mobile Station) and HLR (Home Location Register) / AC (Authentication Center).It is used to generate/update ... View more
a-lawITU-T (International Telecommunications Union-Telecommunication Standardization Sector) companding standard used in the conversion between analogue an... View more
A-SBC - Access Session Border ControllerThe A-SBC is deployed between the access network and the service provider's network edge in order to provide SIP related roles including security, NAT... View more
A/D - Analogue-to-Digital converter or conversionThe process of sampling an analogue waveform and describing it in terms of binary digits. ... View more
A1 InterfaceA1 Interface The A1 interface carries signalling information between the Call Control and Mobility Management functions of the MSC (Mobile Switching C... View more
A10 InterfaceA10 Interface The A10 interface carries user traffic between the PCF (Packet Control Function) and the PDSN (Packet Data Serving Node). ... View more
A11 InterfaceA11 Interface The A11 interface carries signalling information between the PCF (Packet Control Function) and the PDSN (Packet Data Serving Node). ... View more
A2 InterfaceA2 Interface The A2 interface carries 64Kbps/56Kbps PCM (Pulse Code Modulation) information (voice/data) or 64Kbps UDI (Unrestricted Digital Informati... View more
A2DP - Advanced Audio Distribution ProfileThe Advanced Audio Distribution Profile in Bluetooth specifies the protocols and procedures that define the distribution of high quality audio content... View more
A3 - Authentication Algorithm A3Authentication algorithm used in conjunction with Ki , the authentication key, and RAND , the random number generated in the AuC (Authentication Centr... View more
A3 InterfaceThe A3 interface carries coded user information (voice/data) and signaling information between the Selection / Distribution unit function and the chan... View more
A5 InterfaceA5 Interface The A5 interface carries a full duplex stream of bytes between the IWF (Interworking Function) and the Selection / Distribution unit func... View more
A5/1 - Encryption Algorithm A5/1Algorithm used in the GSM ciphering process between a MS (Mobile Station) and the GSM network. ... View more
A5/2 - Encryption AlgorithmA5/2 A5/2 - Encryption Algorithm A5/2 Algorithm used in the GSM ciphering process between a MS (Mobile Station) and the GSM network. This algorithm is... View more