Asterisk 通道變量

  * ${ACCOUNTCODE}: 用戶計費帳號 sip.conf 裏的 account=XXXX
    * ${ANSWEREDTIME}: 通話時長(秒)
    * ${BLINDTRANSFER}: 通道是否爲轉接類型
    * ${CALLERID(all)}: 主叫用戶名(主叫ID) 格式 name(123454)
    * ${CALLERID(name)}: 主叫用戶名 sip.conf 裏的 username=XXXX
    * ${CALLERID(num)}: 主叫號碼sip.conf 裏的 callerid=XXXX
    * ${CALLINGPRES}: PRI Call ID Presentation variable for incoming calls (See callingpres )
    * ${CHANNEL}: 當前通道標識
    * ${CONTEXT}: 當前context
    * ${DATETIME}: 當前日期時間
    * ${DIALEDPEERNAME}: Name of the called party. Broken for now, see DIALEDPEERNAME
    * ${DIALEDPEERNUMBER}: Number of the called party. Broken for now, see DIALEDPEERNUMBER
    * ${DIALEDTIME}: Time since the number was dialed (only works when dialed party answers the line?!)
    * ${DIALSTATUS}: 當前通道狀態
    * ${DNID}: 用戶所撥打的號碼
    * ${EPOCH}: The current UNIX-style epoch (number of seconds since 1 Jan 1970)
    * ${EXTEN}: 當前所撥打分機號碼
    * ${HANGUPCAUSE}: The last hangup return code on a Zap channel connected to a PRI interface
    * ${INVALID_EXTEN}: The extension asked for when redirected to the i (invalid) extension
    * ${LANGUAGE}: 提示語言
    * ${MEETMESECS}: Number of seconds a user participated in a MeetMe conference
    * ${PRIORITY}: The current priority
    * ${RDNIS}: The current redirecting DNIS, Caller ID that redirected the call. Limitations apply, see RDNIS
    * ${SIPDOMAIN}: SIP destination domain of an inbound call (if appropriate)
    * ${SIP_CODEC}: Used to set the SIP codec for a call (apparently broken in Ver 1.0.1, ok in Ver. 1.0.3 & 1.0.4, not sure about 1.0.2)
    * ${SIPCALLID}: The SIP dialog Call-ID: header
    * ${SIPUSERAGENT}: The SIP user agent header
    * ${TIMESTAMP}: Current date time in the format: YYYYMMDD-HHMMSS This is deprecated as of Asterisk 1.4, instead use :${STRFTIME(${EPOCH},,%Y%m%d-%H%M%S)})
    * ${TRANSFERCAPABILITY}: 通道類型。是否可以轉接
    * ${TXTCIDNAME}: Result of application TXTCIDName (see below)
    * ${UNIQUEID}: 當前唯一標識
    * ${TOUCH_MONITOR}: used for "one touch record" (see features.conf, and wW dial flags). If is set


1.4版本已經沒有${TIMESTAMP}這個變量了

原文：http://www.cnblogs.com/abinxm/archive/2009/12/15/1624966.html