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352 Dialogic
®
Global Call IP Technology Guide — November 2007
Dialogic Corporation
Third Party Call Control (3PCC) Operations and Multimedia Support
5.2.3 Device Types and Usage
When using Dialogic
®
Global Call API in 3PCC mode, the gc_OpenEx( ) and
gc_AttachResource( ) functions cannot be used to attach an IPT network device to an IPM media
device. IPM media devices cannot be opened via Dialogic
®
Global Call API when the library is
initialized in 3PCC mode. IPM media devices must be opened by the Dialogic
®
IP Media Library
API library when the Dialogic
®
Global Call API is initialized in 3PCC mode.
When initialized in 3PCC mode, valid Dialogic
®
Global Call API devices are limited to IPT board
devices and IPT network devices. Refer to Section 2.3, “Device Types and Usage”, on page 46 for
information about these device types.
5.2.4 Using Fast Start and Slow Start Setup in Third Party Call
Control Mode
When the Dialogic
®
Global Call API library is initialized in 3PCC mode, the host application
controls whether or not SDP information is included in the outbound INVITE message.
Note: When initialized in 3PCC mode, the Dialogic
®
Global Call API library ignores the
IPSET_CALLINFO / IPPARM_CONNECTIONMETHOD parameter; this parameter is only valid
when Dialogic
®
Global Call API is initialized in 1PCC mode. Refer to Section 4.2, “Fast and Slow
Call Setup Modes”, on page 115 for information.
5.2.5 Call Transfer Scenarios
Call transfer behavior when the Dialogic
®
Global Call API is initialized in 3PCC mode is identical
to call transfer behavior when the Dialogic
®
Global Call API is initialized in 1PCC mode. In other
words, no additional interface changes are required to implement call transfer in 3PCC mode. Refer
to Section 3.3, “Call Transfer Scenarios When Using SIP”, on page 74 for more information.
gc_SetConfigData( ) LD IPSET_MEDIA_STATE
IPSET_FOIP
GCSET_CHAN_CAPABILITY
IPSET_DTMF
IPSET_CALLINFO/IPPARM_
CONNECTIONMETHOD
Parameters using indicated set IDs
are ignored
gc_SetUserInfo( ) BRD
CRN
LD
IPSET_MEDIA_STATE
IPSET_FOIP
GCSET_CHAN_CAPABILITY
IPSET_DTMF
IPSET_CALLINFO/IPPARM_
CONNECTIONMETHOD
Parameters using indicated set IDs
are ignored
Table 25. Global Call Functions Invalid in Third Party Call Control Mode (Continued)
Global Call Function
Device
Type
Parameter Set ID or
Extension IDs (if applicable)
Result when Function is Called in
Third Party Call Control Mode