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Global Call IP Technology Guide — November 2007
Dialogic Corporation
Fields”, on page 172. Table 33 lists the header fields that can be set in REFER messages and the
corresponding parameter IDs along with examples of field values.
8.3.16 gc_Listen( ) Variances for IP
The gc_Listen( ) function is supported in both synchronous and asynchronous modes. The
function is blocking in synchronous mode.
Note: For line devices that comprise media (ipm) and voice (dxxx) devices, routing is only done on the
media devices. Routing of the voice devices must be done using the Voice API (dx_ functions).
8.3.17 gc_MakeCall( ) Variances for IP
This function is only supported in asynchronous mode.
The Dialogic
®
Global Call API supports multiple IP protocols on a single IPT Network device. See
Section 2.3.3, “IPT Network Devices”, on page 48 for more information. When using a multi-
protocol network device (that is, one opened in P_IP mode), the application specifies the protocol
in the associated GC_MAKECALL_BLK structure, using the set ID IPSET_PROTOCOL, the
parameter ID IPPARM_PROTOCOL_BITMASK, and one of the following values:
• IP_PROTOCOL_SIP
• IP_PROTOCOL_H323
Table 33. SIP Header Fields Settable in REFER Messages
Field Name
GC Parameter ID
(Set ID: IPSET_SIP_MSGINFO)
Example Field Value
Request URI IPPARM_REQUEST_URI
146.152.212.67:5060
From IPPARM_FROM
From: Transferor <sip:146.152.212.43>;tag=0-
13c4-408c7921-1026900f-ed5;myname
To IPPARM _TO
To: Transferee
<sip:146.152.212.67:5060>;tag=0-13c4-
408c7921-10268fdd-6a19
From Display IPPARM_FROM_DISPLAY
Transferor
To Display IPPARM_TO_DISPLAY
Transferee
Call ID IPPARM_CALLID_HDR
48cabd0-0-13c4-408c7921-10268fdd-
1563@146.152.212.67
Contact URI IPPARM_CONTACT_URI
sip:146.152.212.43
Contact Display IPPARM_CONTACT_DISPLAY
Transferor
Referred-By IPPARM_REFERRED_BY
Referred-By: <sip:146.152.212.43>
Replaces IPPARM_REPLACES
Replaces: 48cae78-0-13c4-408c7923-1026947b-
1078@146.152.212.67;to-tag=0-13c4-408c7923-
102694a3-6942;from-tag=0-13c4-408c7923-
1026947b-7b6