Intel 05-2352-005 manual Coder Negotiation with Third Party Stacks, SIP Call Control, Example

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The number 6000 is the default value for this parameter. You may change the beginning of the T.38 service port range by first editing this value and saving the

.config file.

6.After you have saved the .config file with the new T.38 service port value, open the Command Prompt window.

7.From the Command Prompt, change the directory to /usr/dialogic/data.

8.Execute fcdgen as follows:

/usr/dialogic/bin/fcdgen -f <input filename>.config -o <output filename>.fcd

The resulting FCD file is created in the /usr/dialogic/data directory. If the -o option is omitted from the command, the default output FCD file will have the same filename as the user-modified input .config file, but with an .fcd extension.

9.Restart the system service to download the new configuration to HMP.

H.323 Coder Negotiation with Third Party Stacks

Use caution when restricting coder frame sizes or frames per packet while communicating with third-party H.323 stacks. The IPT H.323 protocol stack uses both coder type and frames per packet as part of the algorithm to determine a successful Tx/Rx media match. Restricting coder frame sizes can cause Fast Start calls to fallback to Slow Start or coder negotiation to fail. See the following example.

Example:

A Global Call application configures a channel for G.711 A Law with a frame size of 10 milliseconds. A third-party H.323 stack, which is configured for G.711 A-Law with a frame size of 30 milliseconds, initiates a call to the application. The IPT H.323 protocol stack will use 10 milliseconds as an upper limit for both the Tx and Rx media directions. Even though both sides support the same coder, the frame size discrepancy can cause the coder negotiation to fail, resulting in a GCEV_DISCONNECTED event.

H.323 T.38 HMP Interoperability with the Intel NetStructure® PBX-IP Media Gateway

HMP has not been tested with the current version of the Intel NetStructure PBX-IP Media Gateway (Version 4.0 Service Update 2) when using H.323 T.38 Fax.

SIP Call Control

If the remote site does not respond to an outgoing INVITE sent from HMP, the gc_MakeCall() function will time out after 32 seconds and generate a GCEV- DISCONNECTED event. In this scenario, if the application attempts to drop the call before

HMP Linux 1.2 Release Update, Rev 05 — September 2006

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Contents September Release UpdateHMP Linux 1.2 Release Update, Rev 05 September Intended Audience How to Use This PublicationPurpose Related Information Document Rev 03, published June Updated for Service UpdateDocument Rev 05, published September Document Rev 04, published DecemberDocument Revision History Document Rev 02, published JanuaryDocument Rev 01, published October Release Developments Service Update Software InstallationAssumptions and Prerequisites Order of ProceduresFollowing messages are displayed Installing the Service UpdateEnvironment Variables HMP Verification DemoTransaction Record Support for Red Hat Enterprise Linux UpdateSupport for Suse Linux Enterprise Server Support for 120 Low Bit Rate ChannelsHMP Linux 1.2 Release Update, Rev 05 September Product or Component IssuesIssue Type Defect Number PTR NumberDescription Issues Resolved in HMPFcdgen error while loading shared Dataformatmulaw General Known Issues in HMPRestrictions and Limitations Global Call, IP, and Ipml ConferencingFax Host-based H.323 Protocol Stack Voice Demos Resolved Restrictions and LimitationsCompatibility Notes Echo Cancellation With Continuous Speech ProcessingEcho Cancellation With Conferencing Configuring UDP/RTP Port RangeConfiguring T.38 Service Port Range Example Coder Negotiation with Third Party StacksSIP Call Control Operating System Notes Using Multiple NICs Under Heavy LoadsElvtune Using Ioctls SolutionsRelease Documentation Documentation3 UpdatesCorrect Incorrect, Release Documentation, the following apply , Development Software, the following applyOperating Software Documentation Installation DocumentationHost Media Processing Diagnostics Guide Development Software Documentation Revised OriginalGlobal Call IP for Host Media Processing Technology Guide Fax Software Reference for Linux and WindowsGlobal Call API for Host Media Processing Library Reference HMP Linux 1.2 Release Update, Rev 05 September 2006September Dxmreciottdata Voice API for Host Media Processing Library Reference„ Cautions „ Description„ Errors Following example is for Linux applications „ ExampleFollowing example is for Windows applications HMP Linux 1.2 Release Update, Rev 05 September 2006September „ See Also Transaction Record Voice API for Host Media Processing Programming GuideAudio Conferencing API for Host Media Processing Demo Guide Demonstration Software Documentation$INTELDIALOGICDIR/demos/IPMediaServer IP Media Server for Host Media Processing Demo GuideGlobal Call API Demo Guide
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