YD/T 1291-2003.Protocol of peer to peer short message interworking between networks. 1范围 YD/T 1291规定了不同电信运营商网络之间点对点短消息网间互通协议，包括协议功能概述、通信方式、消息定义和参数定义等方

YD/T 1291-2003.Protocol of peer to peer short message interworking between networks. 1范围 YD/T 1291规定了不同电信运营商网络之间点对点短消息网间互通协议，包括协议功能概述、通信方式、消息定义和参数定义等方

YD/T 1292-2003.Technical specification for media gateway control protocol based on H.248. 1范围 YD/T 1292规定了基于ITU-T H.248标准所规定的媒体网关和媒体网关控制器之间、媒体网关和软交换设备

YD/T 1293-2003.IP Over WDM integrated network management system technical specification. 1范围 YD/T 1293规定了IPOverWDM综合网络管理系统的系统功能需求;规定了IPOverWDM综合管理系统分别

YD/T 1282-2003.900/1800MHz TDMA digital cellular mobile communication network equipment requirements for Unstructured Supplement Service Data (USSD).

YD/T 1287-2003.Test specification for ethernet LAN switch with routing capability. 1范围 YD/T 1287规定了公共电信网上使用的具有路由功能的以太网交换机的功能测试、性能测试、协议测试和常规测试方法。具有路由功能

YD/T 1288-2003.Technical specification for IP telephony interworking based on H.323 and SIP. 1范围 YD/T 1288规定了基于H.323协议的IP电话系统与基于SIP的IP电话系统之间进行互通的协议要求，

YD/T 1305-2004.900/1800MHz TDMA Digital cellular mobile telecommunication network technical specification of network management interface for CAMEL2 n

YD/T 1304-2004.Test specification for national No.7 signalling system - Message Transfer Part (MTP) and Telephone User Part (TUP). 1范围 YD/T 1304规定了在No

YD/T 1303-2004.No.7 signalling survillance system Technical requirement. 1范围 YD/T 1303规定了No.7信令监测系统的功能、性能和应用的要求。 YD/T 1303适用于No.7信令网的维护、网间互联互通的监测和结算。