另外，许多IP电话技术供应商现在都把SIP作为IP电话技术部署的控制协议。
Also, many of the IP telephony vendors are now focused on SIP as the control protocol for their IP telephony deployments.
IP电话的互通问题是目前许多人关注的问题，文章就其中的呼叫控制流程和用户接入认证协议进行了讨论。
The interoperation technology about IP telephony is very concerned now. Some aspects, such as call handling procedures, authentication and authorization procedures, are discussed in this paper.
企业计算机电话论坛的t .30传真标准为控制传真文档图像的传输提供了协议。
The Enterprise Computer Telephony Forum's T. 30 fax standard provides the protocol for controlling the transmission of the fax document image.
SIP是当前IP电话的会话建立和信令控制的基础协议，SIP应用也是实现基于IP网络的语音等多种多媒体应用的基本途径。
SIP is currently the basic signaling and call setup protocol for IP telephony, and SIP applications are the basic way to provide voice and other multimedia services over IP.
SIP是当前IP电话的会话建立和信令控制的基础协议，SIP应用也是实现基于IP网络的语音等多种多媒体应用的基本途径。
SIP is currently the basic signaling and call setup protocol for IP telephony, and SIP applications are the basic way to provide voice and other multimedia services over IP.
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