正是由于SIP这一系列优点，使得其广泛应用与下一代网络中。

Just because the series of advantage, SIP is widely used in the next generation network.

youdao

正是由于SIP这一系列优点，使得其广泛应用与下一代网络中。

Just because the series of advantage, SIP is widely used in the next generation network.

youdao