insys icom i-modul ISDN HIX V4, Designer'S Manual, Page: 61 / 76

i-modul ISDN HIX V4 Special AT Commands for Voice Functions
Command Description
AT:1CRDO
Sending a connection request to the network
An outgoing call is initiated with this command.
AT:1CRD
<da>
O
<oa>
D <da>
Specifies the target address
<da>
(target phone number)
O<oa>
Specifies the origin address
<oa>
(own MSN, optional)
The i-modul ISDN HIX V4 initiates an outgoing call and indicates the call
reference with the response
:1I <cr>
The following example initiates an outgoing call for port 1 with the target
address 234 and the origin address 567 (own MSN); (the call gets the call
reference 1 then):
Command:
AT:1CR D234 O567
Response:
:1I1
AT:1CHI
Holding a call
A call with a certain call reference is held with this command.
AT:1CHI<
cr> Holds the call with the call reference <cr>
AT:1CHI1
Holds the call with the call reference 1 at port 1
AT:1CAI
Retrieving a call
A held call with a certain call reference is retrieved again with this com-
mand.
AT:1CAI<
cr> Retrieves the held call with the call reference <cr>
AT:1CAI1
Retrieves the held call with the call reference 1 at port 1
AT:1C3PTYIIH
Initiating a three-party conference call
A three-party conference call is initiated with this command. The B channel
used with this is the one of the active connection.
AT:1C3PTYI<
cr>
IH<
cr2>
Initiates a three-party conference call with the call refer-
ences <
cr> and <cr2>
AT:1C3PTYI1IH2
Initiates a three-party conference call with the call refer-
ences 1 and 2 at port 1
In order to finish a three-party conference call again, the same
command must be entered to get to the previous state again
(the call with the call reference of
I
becomes active and the call with the
call reference of
IH
will be held).
If one of the other two parties of the three-party conference call hangs up,
you'll get back to the previous state of the active connection. If the previ-
ously active connection hangs up the connection during the three-party
conference call for example, the three-party conference call will be finished
and the active connection will be held.
AT:1#CI
Displaying the received transmission service
The transmission service, which is received hexadecimally encoded with an
incoming call, is displayed with this command.
AT:1#CI<
cr> Displays the transmission service of the call with the call
reference <
cr>
The returned value is the CIP value defined in the CAPI 2.0 specification in
hexadecimal format. Example:
Command:
AT:1#CI1
Response:
0010
Received transmission service
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