Asterisk AMI事件中的「Presentation Allowed，Not Screened」提示是什麼意思？

Question

當我聽到來自Asterisk的AMI事件（端口5038），我會收到以下事件：

Events: NewCallerid 
Privilege: call,all 
Channel: DAHDI/9-1 
CallerIDNum: 12345678 
CallerIDName: 
Uniqueid: 1303743360.356 
CID-CallingPres: 0 (Presentation Allowed, Not Screened) 

什麼是

CID-CallingPres: 0 (Presentation Allowed, Not Screened) 

Answer 1

以下的含義是從Asterisk的

 
Gets or sets Caller*ID presentation on the channel. The following values are 
valid: 
    allowed_not_screened - Presentation Allowed, Not Screened. 
    allowed_passed_screen - Presentation Allowed, Passed Screen. 
    allowed_failed_screen - Presentation Allowed, Failed Screen. 
    allowed - Presentation Allowed, Network Number. 
    prohib_not_screened - Presentation Prohibited, Not Screened. 
    prohib_passed_screen - Presentation Prohibited, Passed Screen. 
    prohib_failed_screen - Presentation Prohibited, Failed Screen. 
    prohib - Presentation Prohibited, Network Number. 
    unavailable - Number Unavailable. 

描述

當您通過T1/E1使用網絡呼叫時，以及在您撥打用於在網絡呼叫上設置來電*識別碼的呼叫時，您需要發送特定的d在電信公司討論了PRI/BRI上的callerid設置，他們允許哪些設置。