As a critical part of MPLS technology, signaling protocol takes the responsibility to establish a data transmission path during adjacent LSRs in MPLS network.
信令协议是MPLS技术的重要组成部分，它的职责是在MPLS网络中建立一条相邻lsr间的信息传输通路。
SIP is the standard signaling protocol of IMS.
而初始会话协议SIP是IMS的标准信令协议。
Finally, the WCDMA network architecture with location positioning and basic signaling protocol and interface, and location procedures of WCDMA network mobile location are analyzed.
最后，本文还分析了具有定位功能的WCDMA网络结构、移动台定位的基本信令协议和操作流程，以及对还需进一步深入研究的问题进行了探讨。
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