Communication terminology (I)

1. ARPU: average revenue per user (ARPU-average revenue per user ).
ARPU focuses on the profits produced by operators from each user within a period of time. Obviously, the more high-end users, the higher the ARPU. In this period of time, from the operator's operation, the high a r p u value indicates a high profit, which is a good benefit during this period. A r p U is for shareholders. Investors should not only look at the current profitability of the enterprise, but also focus more on the development ability of the enterprise. If the R p U value is high, the current profit of the enterprise is high, the development prospects are good, and the investment is feasible.

2. IMS: IP Multimedia Subsystem
IMS (IP Multimedia Subsystem) is an IP multimedia system. It is a brand new multimedia service form that can meet the needs of end customers for more novel and diverse multimedia services. At present, IMS is considered as the core technology of the next generation network and an important way to solve the problem of mobile and fixed network convergence and introduce differentiated services such as voice, data, and video. However, most IMS networks around the world are currently in the initial stage, and their application methods are also under discussion in the industry.

3. BICC: bearer independent Call Control Protocol
The Protocol is a call control protocol developed by the ITU-TSG11 team and is not associated with the bearer. The main purpose of BICC protocol is to solve the problem of separation of Call Control and bearer control, so that call control signaling can be carried on various networks, including MTP (message transmission part) SS7 network, ATM network, and IP network. The BICC protocol evolved from ISUP (ISDN User segment) and is an important supporting tool for the evolution from traditional telecom networks to integrated multi-service networks.