应用笔记 5009

POS Fast Connect Operation

By: Jeff Sorensen

摘要 : Many point-of-sale (POS) terminals use a fast connect-protocol handshake at 1200bps, which reduces the amount of time needed to establish a communication-channel connection. The Teridian 73M2901CE, a single-chip V.22bis modem, can connect to a NAC at a service provider that uses a 1200bps phase-shift keying (PSK) fast connect protocol. This application note demonstrates how to perform a POS fast connect with the 73M2901CE.