System Release 6.1 cPCI for Windows Release Guide — May 2006 34
System Release 6.1 cPCI for Windows also supports the following new features that are
specific to the H.323 protocol only:
Optional H.245 channel in H.323 fastStart connection mode
By indicating that the H.245 channel is not essential, an application can accelerate the
call establishment process by allowing completion without waiting for the H.245
channel to be established.
H.323 Annex M Tunneled Signaling Messages
Applications can encapsulate DSS/QSIG/ISUP messages (optionally containing
nonstandard data elements) in common H.225 call signaling messages. The length of
the message content is not limited to 255 bytes.
Support for extended-length Global Call parameters is provided by several new
gc_util_…_ex( ) APIs that have been added to the Global Call library. These new
APIs are documented in both the Global Call API Library Reference and the Global
Call IP Technology Guide.
Expanded Nonstandard Data capabilities
When sending or receiving a Nonstandard Data element (in Setup, H.245 UII, Q.931
Facility, or RAS messages, for example) the data is no longer limited to 255 bytes.
Support for extended-length Global Call parameters is provided by several new
gc_util_…_ex( ) APIs that have been added to the Global Call library. These new
APIs are documented in both the Global Call API Library Reference and the Global
Call IP Technology Guide.
System Release 6.1 cPCI for Windows also supports the following new features that are
specific to the SIP protocol only:
Call Transfer
Supplementary service for unattended and attended call transfers compliant with
IETF RFC 3515.
Message header access
Applications can set/get any standard or proprietary header field in any supported SIP
message type (as permitted by IETF standards) using a generic mechanism. Using
this mechanism, the size of header field content is not limited to 255 bytes.
Support for extended-length Global Call parameters is provided by several new
gc_util_…_ex( ) APIs that have been added to the Global Call library. These new
APIs are documented in both the Global Call API Library Reference and the Global
Call IP Technology Guide.
MIME messages
Applications can send and retrieve SIP messages that include single-part or multi-part
MIME bodies. MIME bodies are commonly used to encapsulate SIP Telephony
(SIP-T) information.
SIP outbound proxy
Applications can configure the Global Call library to use a proxy for all outbound
messages sent from each virtual board.
