V.42 Error Correction Protocol
V.42 Product Description
GAO's V.42 software is designed for optimum asynchronous-to-synchronous conversion as well as error detection and retransmission of damaged data. The ITU-T V.42 standard addresses two major problems for asynchronous devices: an asynchronous-to-synchronous conversion protocol and a sophisticated error-detection process for asynchronous systems. This recommendation contains an HDLC-based protocol referred to as the Link Access Procedure for Modems (LAPM).
Features of V42 Error Correction Protocol
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Link control protocol for the sequencing and flow control of the traffic
Cyclic redundancy check for error detection
V.14 for asynchronous-to-synchronous conversion operations
Inter-working in the non-error-correcting mode with V-Series DCEs that include asynchronous-to-synchronous conversion according to Recommendation V.14
Synchronous transmission through the conversion of start-stop data
Initial handshake in start-stop format minimizes disruption to the DTEs
For official ITU-T standard on V.42, click ITU-T, V.42 Standard.
For examples of GAO's Modem Software Architecture, click GAO's Modem Software Architecture.
For a complete list of GAO's Modem Software products, please see GAO's Softmodem List.
V.42 Product Sheet Printable PDF Version
