This technology creates a new space for the PSTN, provides value-added services fast, low-costly to the network-wide users with fixed network prepaid, fixed network ringtones.

• 由此证明，该技术方案为PSTN创造了新的发展空间，能够快速、低成本面向全网用户提供固网预付费、固网彩铃等增值业务。