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Global Call IP Technology Guide — November 2007 489
Dialogic Corporation
target_id
CRN (if it exists) or line device (if a CRN does not exist)
duration
GC_SINGLECALL
infoparmblkp
a pointer to a GC_PARM_BLK with a list of parameters (including coder information) to be
set for the line device.
Note: If a call is in the Null state, the new parameter values apply to the next call. If a call is in a non-Null
state, the new parameter values apply to the remainder of the current call only.
8.3.26.2 Setting Call Parameters for the Next and Subsequent Calls
When the duration parameter is set to GC_ALLCALLS, the new call values become the default
values for the line device and are used for all subsequent calls on that device. The pertinent
function parameter values in this context are:
target_type
GCTGT_GCLIB_CHAN
target_id
line device
duration
GC_ALLCALLS
infoparmblkp
a pointer to a GC_PARM_BLK with a list of parameters (including coder information) to be
set for the line device.
Note: If a call is in the Null state, the new parameter values apply to the next call and all subsequent calls.
If a call is in a non-Null state, the new parameter values apply to the remainder of the current call
and all subsequent calls.
8.3.26.3 Setting SIP Message Information Fields
The gc_SetUserInfo( ) function can be used to set SIP message information fields. The relevant
function parameter values in this context are:
target_type
GCTGT_GCLIB_CHAN
target_id
line device
duration
GC_SINGLECALL
infoparmblkp
A pointer to a GC_PARM_BLK that contains one or more parameter elements, each of which
contains the IPSET_SIP_MSGINFO parameter set ID and one of the following parameter IDs
to identify the header field to be set:
• IPPARM_CALLID_HDR (deprecated)