BICC ISUP介绍（BICC ISUP to introduce）.doc

BICC ISUP介绍（BICC ISUP to introduce） 1 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- The BICC protocol was standardized by the itu-t SG11 team and evolved from the ISUP protocol, which is a control protocol for the use of a call-neutral call in the backbone network. BICC defines the signaling transfer converter (STC), the application transport mechanism (APM), the load bearing control tunnel protocol (BCTP), and the IP load control protocol (IPBCP). A signaling link is established by point coding, signaling link is connected through static SCTP, and the routing principle of normal call is selected in the BICC node to build a channel for the call signaling. After the signaling information is transformed by the signaling transfer converter, it USES APM to transmit BICC specific control information. The BICC protocol divides the nodes that support the BICC signaling into the service node (SN) and the call coordination node (CMN), which has the host control function (BCF), which does not have a host control function. For SN, the call function and the host control function can be physically separated or separated. If separated, the call function and the host control functional entity need to send the message using the call load control (CBC) signaling. SN and their USES half call model, each full of call is divided into incoming and out call, allowed by the connection type is 3.1 kHz audio, 64 kbit/s, 2 x 64 kbit/s, 384 kbit/s, 1536 kbit/s, 1920 kbit/s, N * 64 kbit/s? N = 2 ~ 30, etc. The BICC message includes the initial address message (IAM), the address full message (ACM), the reply message (ANM), the CIC series message, and so on. The BICC solves the problem of the separation of call control and load control, which can be used in any host network, such as ATM, IP, and STM. ATM has good QoS guarantee and call handling capability, and BICC can better support ATM network load, which may b