Search results
Results from the WOW.Com Content Network
Also not in SDLC are later HDLC extensions in ISO/IEC 13239 such as: 15- and 31-bit sequence numbers, the set mode (SM) U frame, 8-bit frame check sequence, a frame format field preceding the address, an information field in mode set U frames, and; the "unnumbered information with header check" (UIH) U frame.
HDLC is based on IBM's SDLC protocol, which is the layer 2 protocol for IBM's Systems Network Architecture (SNA). It was extended and standardized by the ITU as LAP (Link Access Procedure), while ANSI named their essentially identical version ADCCP. The HDLC specification does not specify the full semantics of the frame fields.
The USART's synchronous capabilities were primarily intended to support synchronous protocols like IBM's synchronous transmit-receive (STR), binary synchronous communications (BSC), synchronous data link control (SDLC), and the ISO-standard high-level data link control (HDLC) synchronous link-layer protocols, which were used with synchronous voice-frequency modems.
SDLC may refer to: Systems development life cycle or system design life cycle, which is often used in the process of software development;
Cisco HDLC (cHDLC) is an extension to the High-Level Data Link Control (HDLC) network protocol, and was created by Cisco Systems, Inc. HDLC is a bit-oriented synchronous data link layer protocol that was originally developed by the International Organization for Standardization (ISO). Often described as being a proprietary extension, the ...
SDLC itself evolved into HDLC, [16] one of the base technologies for dedicated telecommunication circuits. VTAM, [17] [18] a software package to provide log-in, session keeping, and routing services within the mainframe. A terminal user would log-in via VTAM to a specific application or application environment (e.g. CICS, IMS, DB2, or TSO/ISPF ...
Flexion and extension describe the basic ways your body moves at its joints. Here's what that means for your workouts and training.
Async, Bisync, SDLC, HDLC, X.25. CRC. 4-byte RX buffer. 2-byte TX buffer. Provides signals needed by a third party DMA controller to perform DMA transfers. [12] Z8530/Z85C30: This USART has a 3-byte receive buffer and a 1-byte transmit buffer. It has hardware to accelerate the processing of HDLC and SDLC.