I have been working in this area for some time, including a few years in standardization on different fora. Now I am trying to put a part of my knowledge in this area so that others can get a good idea of what the technologies I have been directly involved with are all about.

• AAL2 : A brief introduction to this ATM adaptation layer specially suited for applications that generate small packets (from one to up to a couple of hundred octets). A key technology for 3G - UMTS Radio Access Networks.
• Q.AAL2 : An introduction to the AAL2 signalling protocol. It covers capability set 1 (ITU-T recommendation Q.2630.1) and capability set 2 (ITU-T recommendation Q.2630.2). This protocol enables AAL2 switching (i.e. switching at the AAL2 level).
• BICC (Bearer Independent Call Control): this signalling protocol enables the provision of ISDN services over ATM (AAL1 and AAL2) and IP networks. ITU-T has already released two capability sets of this protocol and is now specifying the third one. All of them are commented in this introduction.