Integrated Services Digital Network (ISDN); Harmonized Programmable Communication Interface (HPCI) for ISDN
综合业务数字网(ISDN);ISDN用协调可编程通信接口(HPCI)
发布日期:
1998-05-01
ETS 300 325的此版本应提供与通用ISDN API v2的位兼容性。0和ETS 300 325。它应允许进一步的通用增强,而不会失去与通用ISDN API v2的兼容性。0.该PCI应确保支持两个应用程序接口。备注:(TA21同意)拟议范围在技术上可行。其结果是提供两种接口访问(ETS 300 325和通用ISDN API v2.0)。这些接口可以以某种方式提供,从而保证二进制兼容性,以符合任一规范的应用程序。
接口和硬件之间的代码对于两种接口访问可能是通用的,也可能不是通用的。接口访问的代码应符合每个接口的定义,与代码是通用的还是只能驱动其中一个接口规范无关。未来的增强可以以一种不会破坏这种二进制兼容性的方式执行。因此,本版本的ETS 300 325应保留两种描述(ETS 300 325和通用-
ISDN-API v2。0)除包含通用方面和总体特征的零件外。随着这一发展,未来的实现将确保两个规范之间的交叉兼容性。ETS 300 325也将被修改为包括3组扩展:-新的交换机制(Windows NT、OS2、Netware)-新的用户协议(PPP、SDLC、VMO、反向MDLC、PCM 56 kbit/s)-其他功能(DTMF、参数复制、扩展消息)
This revision of ETS 300 325 shall provide bit compatibility with Common-ISDN-API v2.0 and ETS 300 325. It shall allow further common enhancements without loosing compatibility with Common-ISDN-API v2.0. This PCI shall ensure support to both application interfaces. Remarks: (agreed at TA21) The proposed scope is technically feasible. It results in offering two interface accesses (ETS 300 325 and Common-ISDN-API v2.0). The interfaces can be offered in a way, which guarantees binary compatibility to applications conforming to either specification. The code between the interface and the hardware, may or may not be common to both interface accesses. The code for the interface accesses shall comply with the definitions made for each interface, independant of whether the code is common or only able to drive one of the interface specifications. Future enhancements can be performed in a way, which does not destroy this binary compatibility. Consequently, this revision of ETS 300 325 shall maintain both descriptions (ETS 300 325 and Common-ISDN-API v2.0) besides a part, which contains common aspects and overall features. With this development future implementations will ensure cross compatibility between both specifications. ETS 300 325 is also to be revised to include 3 groups of extensions: -New exchange mechanism (Windows NT, OS2, Netware) -New user protocols (PPP, SDLC, VMO, inverted MDLC, PCM 56 kbit/s) -Miscellaneous features (DTMF, parameter duplication, extension messages)