Filter
Top Products
Dialogic
®
Global Call IP Technology Guide — November 2007 143
Dialogic Corporation
IP-Specific Operations
Table 4. Retrievable Call Information
Parameter Set ID and Parameter ID(s)
When Information
Can Be Retrieved
Datatype in
value_buf Field
(see Note 1)
SIP/
H.323
Call ID IPSET_CALLINFO
• IPPARM_CALLID
Any state after
Offered or
Proceeding
For SIP: string, max.
length = MAX_IP_SIP_
CALLID_LENGTH
For H.323: array of
octets, length =
MAX_IP_H323_
CALLID_LENGTH
If protocol is unknown,
MAX_IP_CALLID_
LENGTH defines the
maximum Call ID
length for any possible
protocol.
both
Bearer
Capability IE
IPSET_CALLINFO
• IPPARM_BEARERCAP
After Offered String, max. length =
255
H.323
only
Call Duration IPSET_CALLINFO
• IPPARM_CALL_DURATION
After Disconnected,
before Idle
Unsigned long (value
in ms)
H.323
only
Conference
Goal
IPSET_CONFERENCE
• IPPARM_CONFERENCE_GOAL
Any state after
Offered or
Proceeding
Uint[8] H.323
only
Conference
ID
IPSET_CONFERENCE
• IPPARM_CONFERENCE_ID
Any state after
Offered or
Proceeding
char*, max. length =
IP_CONFER
ENCE_ID_
LENGTH (16)
H.323
only
Display
Information
IPSET_CALLINFO
• IPPARM_DISPLAY
Any state after
Offered or
Proceeding
char*, max. length
= MAX_DISPLAY_
LENGTH (82), null-
terminated
both
Facility IE IPSET_CALLINFO
• IPPARM_FACILITY
After Offered
(SETUP message),
Connected
(CONNECT
message), or the
reception of a
Facility message
String,
max. length = 255
H.323
only
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.