BICC vs SIP-I
BICC(携带者独立呼叫控制)和SIP-I(会话启动协议 - ISUP)是会话控制协议,用于创建,修改和终止基于IP的通信,例如语音和多媒体服务。这两种方法都是开发出来的,以通过基于IP的网络携带ISUP信号消息。3GPP的不同版本适应了这两种协议,以迎合不断发展的网络及其互动。
BICC
se;被定义为满足ISUP信令rvices over broadband backbone network. Since ISUP was designed to cater narrowband signalling requirements over TDM networks, BICC specification was defined and standardized by ITU-T as per the recommendation Q.1902 in year 2000 to create, modify and terminate voice calls between MSC servers (Mobile Switching Center). BICC handles the signalling part of the voice calls, which ultimately controls the bearer setup and disconnection. BICC inherits the message and parameter set of ISUP, which leads to compatibility and support of ISUP services. 3GPP (3rd Generation Partnership Project) adopted BICC in the UMTS Release 4 standard, which was published in year 2001. BICC addresses most of the requirements of GSM and UMTS domains, but failed to address the future flexibility requirements with the evolution of networks. BICC CS2 (Capability Set 2) comprised of the ability to control the IP bearer network, codec negotiation, and modification using the BCP (Bearer Control Protocol). This leads to separation of call control and bearer connection control into two independent networks within the UMTS architecture.
sip-i
SIP-I是现有SIP协议的扩展,并带有封装的ISUP消息,可通过基于SIP的网络传输窄带信号。ITU-T和ANSI标准化了SIP-I规范,以迎合ISUP和BICC网络的互动。根据SIP规格,定义了3个配置文件来满足主要的互动场景。例如,配置文件仅通过将ISUP信息映射到SIP标头中,配置文件B提供了广义的SIP解决方案,并能够覆盖ISUP网络范围和配置文件C涵盖使用封装的ISUP的监管要求。SIP-I促进了与Isup岛陷入饮用型主链的互连。SIP-I的另一个优点是创建信任域的可能性,因此,从该信任域收到的任何消息都被视为被视为有效的网络节点,这对于迎合旧版ISUP网络的互动至关重要。
What is the difference between BICC and SIP-I? - BICC和SIP-I信号均可在NGN的NC接口(即MSC服务器通信之间)以及IMS和NGN域的互连(即MSC Server和MGCF之间)中使用。 - 最初开发了BICC来满足GSM和UMTS域中的ISUP互动,但是由于标准标准的灵活性和演变有限,SIP-I被引入UMTS域以满足ISUP和SIP互动要求,并随着ISUP的发展而演变,并随之而来。网络。 - 与SIP-I不同,对BICC对跨UMTS和GSM以外的其他域的互操作性存在一些担忧,因此,后来的3GPP释放选择了SIP-I而不是BICC。 - 3GPP版本的BICC通常由无线运算符使用,并导致与有线操作员的互操作性困难。可以通过使用SIP封装的ISUP来避免这种情况,作为无线和有线操作员的标准。 – BICC specification was initially used by 3GPP to facilitate the services such as packetized voice between UMTS call servers, while SIP-I was more focused on evolution of networks and facilitation of interworking. - BICC使用3GPP指定的IUFP媒体数据包框架协议,而SIP-I使用基于IETF规格的数据包框架,该规范在操作员之间广泛使用。 - 此外,由于BICC上某些RTP层函数的复制,BICC使用的媒体数据包框架协议效率较低。 - SIP-I是由信任域的概念开发的,因此它将更适合与BICC一样的UMTS网络。 BICC and SIP-I are mechanism to interworking and encapsulation of ISUP messages to transport over the IP based networks. In general BICC is limited to operation within GSM and UMTS context, while SIP-I provides interworking with most of the networks. |
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