Terminal Adaptation Functions (TAF) for Services Using Synchronous Bearer Capabilities
This Technical Specification (TS) defines Terminal Adaptation Functions (TAF) which are integrated in a Mobile Termination (MT) and which enable the attachment of Synchronous Terminals to an MT (see GSM 04.02 [4]). The general aspects of Terminal Adaptation Functions are contained in specification GSM 07.01 [8]. This ETS covers support of synchronous data services (see GSM 02.02 [2]) for the following interfaces and procedures:
‑ V.22 DTE/DCE Interface
‑ V.22 bis DTE/DCE Interface
‑ V.26 ter DTE/DCE Interface
‑ V.32 DTE/DCE Interface
‑ X.21 DTE/DCE Interface
‑ X.21 bis DTE/DCE Interface
‑ X.25 Procedure
‑ X.32 Procedure
‑ V.25 bis Procedure
‑ I.420 Interface (S)
LAPB is the only synchronous non‑transparent protocol which is considered here.