This paper describes an interface architecture of ISDN basic rate access interface ( 2B + D ) for existing switching systems. 本文主要描述为交换机提供(2B+D)基本速率入口的ISDN接口的结构。
ISDN Basic Rate Access Interface for Existing Switching Systems 现有程控交换机的ISDN基本速率接口(BRI)
According to the active rules of the railway bridge rating, the paper plaits the rate program of common bridges with FORTRAN language, designs the interface with Visual Basic, and then forms an existing railway bridge rating system with perfect functions. 根据现行《铁路桥梁检定规范》,用FORTRAN语言编制了常见桥型的检算程序,用VISUALBASIC设计了人机界面,形成了功能完善的既有桥梁检算系统。