Neo_M660 AT Command Set
Copyright © Neoway Technology Co., Ltd
44
7.3 Call Holding and Multi-party Conversation: +CHLD
Description
To set call on hold and add it to a conversation
Format
AT+CHLD=<n><CR>
AT+CHLD=?<CR>
Parameter
<n>: (sets/shows the result code presentation status to the TE)
0: Releases all held calls, or sets User-Determined User Busy for a waiting call
1: Releases all active calls and accepts the other (waiting or held) call
1x: Releases the specific active call X
2: Places all active calls on hold and accepts the other (held or waiting) call’
2x: Places all active calls, except call X, on hold
3: Adds a held call to the conversation
4: Connects two calls and disconnects the subscriber from both calls
5: Activate the Completion of Calls to Busy Subscriber Request. (CCBS)
Return
Value
See the Example.
Example
AT+CHLD=0
OK
AT+CHLD=?
+CHLD: (0, 1, 1x, 2, 2x, 3, 4, 5)
OK
[+CHLD: (list of supported <n>s)]
Remarks
Call-related supplementary services are required.
Refer to a service that allows a call to be temporarily disconnected from the ME but the
connection to be retained by the network, and to a service that allows multiparty
conversation.
Calls can be held on, recovered, released and added to a conversation.
8 GPRS Commands
8.1 Setting PDP Format: CGDCONT
Description
To set the PDP format of the GPRS
Format
AT+CGDCONT=[<cid> [,<PDP_type> [,<APN> [,<PDP_addr> [,<d_comp>
[,<h_comp> [,<pd1> [,…[,pdN]]]]]]]]]<CR>
AT+CGDCONT?<CR>
AT+CGDCONT=?<CR>
Parameter
<cid>: (PDP Context Identifier) a numeric parameter that specifies a particular PDP
context definition. The parameter is local to the TE-MT interface and is used in other PDP
context-related commands. The range of permitted values (minimum value = 1) is returned
by the test form of the command.