Neo_WM620 WCDMA Module AT Command SetCopyright © Neoway Technology Co., Ltd 522: query status: is a sum of integers each representing a class of information (default 7)1: voice (telephony)2: data (refers to all bearer services)4: fax (facsimile services)8: short message service16: data circuit sync32: data circuit async64: dedicated packet access128: dedicated PAD access:0: not active1: active: string type phone number of calling address in format specified by : type of address octet in integer format (refer TS 24.008 [8] subclause 10.5.4.7)ReturnValuewhen =2 and command successful+CCWA: ,[+CCWA: ,2>[...]]Example AT+CCWA=1,1OKSet call waiting and enable callee IDdisplay.AT+CCWA=?+CCWA: (0-1)OKQuery the value range of theparameter .AT+CCWA?+CCWA: 0OKQuery the current call waiting setting.Remarks Call-related supplementary services are required.7.3 Call Holding and Multi-party Conversation: +CHLDDescription To set call on hold and add it to a conversationFormat AT+CHLD= AT+CHLD=? Parameter : (sets/shows the result code presentation status to the TE)0: Releases all held calls, or sets User-Determined User Busy for a waiting call1: Releases all active calls and accepts the other (waiting or held) call1x: Releases the specific active call X2: Places all active calls on hold and accepts the other (held or waiting) call’
