Business TeleCommunications (BTC); Background information on the production of the standards defining the Open Network Provision (ONP) minimum set of leased lines
商业电信（BTC）；关于定义开放网络供应（ONP）最小租赁线路集的标准制定的背景信息

1996-03-01

BUSINESS TELECOMMUNICATIONS (BTC). OPEN NETWORK PROVISION (ONP) TECHNICAL REQUIREMENTS. 2 048 KBIT/S DIGITAL UNSTRUCTURED LEASED LINE (D2048U). CONNECTION CHARACTERISTICS.
商业电信（BTC） 开放网络供应（ONP）技术要求 2 048 KBIT/S数字非结构化专线（D2048U） 连接特性

1999-01-11

BUSINESS TELECOMMUNICATIONS (BTC). OPEN NETWORK PROVISION (ONP) TECHNICAL REQUIREMENTS. 2 048 KBIT/S DIGITAL UNSTRUCTURED LEASED LINE (D2048U). ATTACHMENT REQUIREMENTS FOR TERMINAL EQUIPMENT INTERFACE.
商业电信（BTC） 开放网络供应（ONP）技术要求 2 048 KBIT/S数字非结构化专线（D2048U） 终端设备接口的附件要求

1998-06-30