CAN/CSA-ISO/IEC ISP 10609-25-99 (R2007)

The international community has decided to make this standard available only in the English language version. It has been adopted as a National Standard of Canada on this basis. This National Standard of Canada is equivalent to International Standard ISO/IEC ISP 10609-25:1995. 1 Scope ISO/IEC ISP 10609 is applicable to end systems concerned with operating in the Open Systems Interconnection (OSI) environment. It specifies a combination of OSI standards, whcih collectively provide the connection-mode Transport Service using the connection-mode Network Service. This part of ISO/IEC ISP 10609 specifies the requirements for Network Layer that apply specifically to configurations involving access to an ISDn subnetwork using a circuit-mode bearer service.