1.2. Media Loads and Routing Configurations

Media loads are pre-defined sets of features supported by certain DM3 boards. A media load is downloaded to a board by choosing a configuration file set that supports that particular media load.

Most feature sets are numbered (for example, 1, 2, 9b) for identification purposes and each media load supports a different combination of features. Examples of media features include speed control, volume control, transaction recording, silence compressed record (SCR) and conferencing. For a complete list of features supported by each media load, consult the Release Guide accompanying your Dialogic System Software.

R4 on DM3 supports two types of routing configurations, fixed and flexible routing. With fixed routing, the resource devices (voice/fax) and network interface devices are permanently coupled together in a fixed configuration. Only the network interface time slot device has access to the CT Bus. With flexible routing, the resource devices (voice/fax) and network interface devices are independent, which allows exporting and sharing of the resources. All resources have access to the CT Bus. Except on some Intel® Dialogic® Integrated (DI) Series boards, media loads support flexible routing. For a complete discussion on fixed and flexible routing, see the Compatibility Guide for the Dialogic R4 API on DM3 Products.

For a list of CONFIG files supported by each board, see the CONFIG file tables listed in Chapter 3, Boards and Applicable CONFIG File Sections.

MediaSpan Media Loads

QuadSpan, DualSpan, and Voice Resource media load configuration files are identified by having an mlx prefix, where x represents the specific media load. Configuration files that do not begin with the mlx prefix do not support media loads and do not support flexible routing. For example, on a DM/V960A-4T1-cPCI board using the T-1 ISDN 4ESS protocol:

• qs2_isdn_4ess.config supports a fixed routing configuration.
• ml2_qs2_4ess.config supports media load 2 in a flexible routing configuration.

IPLink Media Loads

IPLink media loads and routing configurations are identified as follows:

• mlx included in the filename indicates media load x and flexible routing is supported
• evr (exportable voice resources) excluded from the filename indicates media load 1 and fixed routing is supported
• evr included in the filename indicates flexible routing and the following media load support:
  • media load 1 support (applicable to boards containing 303 or 307 DSPs)
  • media load 2 support (applicable to all other boards)

For example, on a DM/IP301-1E1-PCI-100BT board using the E-1 ISDN NET5 protocol:

• ipt_isdn_net5_311.configs supports media load 1 and a fixed routing configuration
• ipt_evr_isdn_net5_311.config supports media load 2 in a flexible routing configuration
• ipvs_evr_isdn_net5_ml11_311.config supports media load 11 in a flexible routing configuration

Fax and VFN Media Loads

Fax and VFN media load configuration files are identified by having an fn3 or a vfn3 prefix, respectively. Configuration files that do not begin either of these prefixes do not support media loads and do not support flexible routing. For example, on a DM/VF240-1T1-PCI board using the T-1 ISDN DMS protocol:

• vfn_isdn_dms.config supports a fixed routing configuration.
• vfn3_isdn_dms.config supports media loads in a flexible routing configuration.

Dialogic Integrated Series Media Loads

Dialogic Integrated (DI) Series media load 1 configuration files do not contain any media load identifier in the file name. For media loads greater than 1 (for example, media load 4), the media load configuration files are identified by having an mlx suffix, where x represents the specific media load. For example, on a DI/0408-LS-A-R2 board:

• DI0408LSA_REV2.config supports media load 1.
• DI0408LSA_REV2_ML4.config supports media load 4.

Configuration files that do not contain an mlx prefix may or may not support media load 1. For example:

• DI0SI16.config does not support media load 1 on the DI/SI-16 board.
• DI0408LSA.config supports media load 1 on the DI/0408-LS-A board.

For a complete list of media loads supported on each DI board, consult the Release Guide accompanying your Dialogic System Software.

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