Signaling ATM Adaptation Layer: This resides between the ATM layer and the Q.2931 function. The SAAL provides reliable transport of Q.2931 messages between Q.2931 entities (e.g., ATM switch and host) over the ATM layer; two sublayers: common part and service specific part.
SAAL
Meaning of SAAL in English
ATM Forum English vocabulary. Английский словарь организации Форум ATM. 2012