ss7-signal-TUP

说明：  TUP（Telephone User Part）即电话用户部分，它是ITU—TCCS7信令方式的第4功能级用户部分之一，也是最早提出的可用的第4功能级建议。TUP部分规定了CCS7信令系统用于电话呼叫控制信令时必需的电路信令功能，更具体的说规定了电话交换局间传送的信令消息的内容
(TUP (Telephone User Part) is the telephone subscriber are partial, it is ITU 鈻he TCCS7 letter makes the way one of 4th merit energy level user parts, also is the 4th merit energy level which most early proposes may use suggested. TUP had partially stipulated the CCS7 letter uses in the telephone call the system to control the letter makes when the essential electric circuit letter to make the function, more concrete said had stipulated exchange transmits the letter makes the news the content )