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Global Call IP Technology Guide — November 2007 531
Dialogic Corporation
IP-Specific Parameters
9.2.24 IPSET_SIP_REQUEST_ERROR
This parameter set is used to indicate that a SIP request has had a transport failure. These
parameters are contained in the parameter block associated with GCEV_EXTENSION events that
are sent to the application when a SIP request failed. The parameter value indicates the busy cause
code that was used in the failure message sent when the local system is unable to accept additional
incoming SIP sessions.
IPPARM_TO_DISPLAY
(deprecated)
Type: string †
Size: max length =
IP_TO_DISPLAY_MAXLEN
Deprecated parameter to set or
retrieve display name in the To
header field of SIP messages
SIP
only
IPPARM_TO
(deprecated)
Type: string †
Size: max length =
IP_TO_MAXLEN
Deprecated parameter to set or
retrieve complete To header field
(display name, URI, parameters)
of SIP messages
SIP
only
Table 65. IPSET_SIP_MSGINFO Parameter Set (Continued)
Parameter IDs Data Type & Size Description
SIP/
H.323
†
For parameter s with data of type String, the length in a GC_PARM_BLK is the length of the data string plus 1.
Table 66. IPSET_SIP_REQUEST_ERROR Parameter Set
Parameter ID
Data Type
& Size
Description
SIP/
H.323
IPPARM_SIP_
DNS_CONTINUE
Type:
REQUEST_
ERROR
Size: sizeof(
REQUEST_
ERROR)
Used in a GCEV_EXTENSION event to indicate that a SIP
request had a transport failure and is being retried using
address information from the DNS server. The
REQUEST_ERROR structure contains an Error field with one
of following parameter values to indicate the cause of the
transport failure:
• IP_SIP_503_RCVD (503 Service Unavailable response
received)
• IP_SIP_FAILED (general transport error)
• IP_SIP_NETWORK_ERROR (network error or local
failure)
• IP_SIP_TIMEOUT (timeout before response received)
SIP
only
IPPARM_SIP_
SVC_UNAVAIL
Type:
REQUEST_
ERROR
Size: sizeof(
REQUEST_
ERROR)
Used in a GCEV_EXTENSION event to indicate that a SIP
request had a fatal transport failure.The REQUEST_ERROR
structure contains an Error field with one of following
parameter values to indicate the cause of the transport failure:
• IP_SIP_503_RCVD (503 Service Unavailable response
received)
• IP_SIP_FAILED (general transport error)
• IP_SIP_NETWORK_ERROR (network error or local
failure)
• IP_SIP_RETRY_FAILED (retry logic error; no retry
attempted)
• IP_SIP_TIMEOUT (timeout before response received)
SIP
only