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144 Dialogic
®
Global Call IP Technology Guide — November 2007
Dialogic Corporation
IP-Specific Operations
If an attempt is made to retrieve information in a state in which the information is not available, no
error is generated. The GC_PARM_BLK associated with the GCEV_EXTENSIONCMPLT event
Nonstandard
Control
(see note 4)
IPSET_NONSTANDARDCONTROL
• IPPARM_
NONSTANDARDDATA_DATA
and either
• IPPARM_
NONSTANDARDDATA_OBJID
or
• IPPARM_H221NONSTANDARD
See Section 4.5.1,
“Retrieving
Nonstandard Data
From Protocol
Messages
(H.323)”, on
page 145 for more
information.
String, max length =
max_parm_data_size
Uint[ ], max length = 40
sizeof(
IP_
H221NONSTANDARD)
H.323
only
Nonstandard
Data
(see note 4)
IPSET_NONSTANDARDDATA
• IPPARM_
NONSTANDARDDATA_DATA
and either
• IPPARM_
NONSTANDARDDATA_OBJID
or
• IPPARM_H221NONSTANDARD
See Section 4.5.1,
“Retrieving
Nonstandard Data
From Protocol
Messages
(H.323)”, on
page 145 for more
information.
String, max length =
max_parm_data_size
Uint[ ], max length = 40
sizeof(
IP_
H221NONSTANDARD)
H.323
only
Phone List IPSET_CALLINFO
• IPPARM_PHONELIST
Any state after
Offered or
Proceeding
char*,
max. length = 131
both
User to User
Information
IPSET_CALLINFO
• IPPARM_USERUSER_INFO
Any state after
Offered or
Proceeding
char*, max. length =
MAX_USERUSER_
INFO_LENGTH (131
octets)
H.323
only
Vendor
Product ID
IPSET_VENDORINFO
• IPPARM_
VENDOR_PRODUCT_ID
Any state after
Offered or
Proceeding
char*, max. length =
MAX_PRODUCT_
ID_LENGTH (32)
H.323
only
Vendor
Version ID
IPSET_VENDORINFO
• IPPARM_
VENDOR_VERSION_ID
Any state after
Offered or
Proceeding
char*, max. length
= MAX_VERSION_
ID_LENGTH (32)
H.323
only
H.221
Nonstandard
Information
IPSET_VENDORINFO
• IPPARM_H221NONSTD
Any state after
Offered or
Proceeding
IP_H221_
NONSTANDARD
(see note 4)
H.323
only
Table 4. Retrievable Call Information (Continued)
Parameter Set ID and Parameter ID(s)
When Information
Can Be Retrieved
Datatype in
value_buf Field
(see Note 1)
SIP/
H.323
Notes:
1. This field is the value_buf field in the GC_PARM_DATA structure associated with the GCEV_EXTENSIONCMPLT event
generated in response to the gc_Extension( ) function requesting the information.
2. Display information, user to user information, phone list, nonstandard data, vendor information and nonstandard control
information, and H221 nonstandard information may not be present.
3.Vendor information is included in a Q931 SETUP message received from a peer.
4. The nonstandard object id and nonstandard data parameters described here refer to nonstandard data contained in a
SETUP message for example. This should not be confused with the nonstandard data included in protocol messages sent
using gc_Extension( ) which can be retrieved from the metaevent associated with a GCEV_EXTENSION event.