H.248
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| − | Also known as Megaco, H.248 is a protocol for controlling media gateways via a [[Softswitch|softswitch]] | + | Also known as Megaco, H.248 is a protocol for controlling media gateways via a [[Softswitch|softswitch]]/[[Softswitch|Media Gateway Controller (MGC)]]. |
| + | <br> | ||
| − | == TelcoBridges and H.248 == | + | == TelcoBridges and H.248 == |
| − | + | ||
| − | + | [[Toolpack]] now supports the H.248 protocol. | |
| + | As indicated in the diagram below, the H.248 stack is a module in the media gateway application residing on the application server. It communicates with the various Toolpack classes (CAFClass, [[CMC library|CMC Library]], CMC Class) as required via a new [[CAF: Working With Call Legs|Media Leg API]]. In turn, the media gateway application communicates with the softswitch / media gateway controller via the H.248 protocol. | ||
| − | [[Image:H.248 schematic.jpg|H.248 schematic.jpg]] | + | <br> [[Image:H.248 schematic.jpg|H.248 schematic.jpg]] |
| + | <br> | ||
| − | === H.248 package support === | + | === H.248 package support === |
| − | + | ||
| − | *'''H.248.1''' | + | [[Toolpack]] supports the following packages. |
| − | **Protocol v2 | + | |
| − | **IPSec connection support | + | *'''H.248.1''' |
| + | **Protocol v2 | ||
| + | **IPSec connection support | ||
**Support UDP (2944 or user-defined) | **Support UDP (2944 or user-defined) | ||
| + | <br> | ||
| − | *'''H.248.1 - Basic packages''' | + | *'''H.248.1 - Basic packages''' |
| − | **Generic | + | **Generic |
| − | **Base Root | + | **Base Root |
| − | **Tone generator (for extension purposes only) | + | **Tone generator (for extension purposes only) |
| − | **Tone detection (for extension purposes only) | + | **Tone detection (for extension purposes only) |
| − | **Basic DTMF generation | + | **Basic DTMF generation |
| − | **DTMF detection | + | **DTMF detection |
| − | **Call Progress Tones Generator | + | **Call Progress Tones Generator (Ringing, Busy, Congestion and Warning tones supported) |
| − | **Basic continuity package | + | **Basic continuity package |
**Network package | **Network package | ||
| − | **RTP package | + | **RTP package |
| − | **TDM Circuit package | + | **TDM Circuit package (only echo-cancellation) |
| + | <br> | ||
| − | *'''H.248.2 Facsimile, text conversation and call discrimination packages''' | + | *'''H.248.2 Facsimile, text conversation and call discrimination packages''' |
| − | **Fax/TextPhone/Modem tones detection (fax and data only) | + | **Fax/TextPhone/Modem tones detection (fax and data only) |
| − | **Call type discrimination package (fax and data only) | + | **Call type discrimination package (fax and data only) |
**IP Fax (Event: Fax Connection Change - end of fax session, call terminating) | **IP Fax (Event: Fax Connection Change - end of fax session, call terminating) | ||
| + | <br> | ||
*'''H.248.4 Transport over Stream Control Transmission Protocol (SCTP)''' | *'''H.248.4 Transport over Stream Control Transmission Protocol (SCTP)''' | ||
| + | ** Partial support | ||
| + | <br> | ||
| + | *'''H.248.7 Generic announcement package''' | ||
| + | **Generic announcement package (Fix Announcement play only) | ||
| − | + | <br> | |
| − | + | ||
| − | + | *'''H.248.10 Media gateway resource congestion handling package''' | |
| − | *'''H.248.10 Media gateway resource congestion handling package''' | + | |
**Congestion handling package | **Congestion handling package | ||
| + | <br> | ||
| − | *'''H.248.11 Media gateway overload control package''' | + | *'''H.248.11 Media gateway overload control package''' |
**Overload control package | **Overload control package | ||
| + | <br> | ||
| − | *'''H.248.13 Quality alert ceasing package''' | + | *'''H.248.13 Quality alert ceasing package''' |
**Quality alert ceasing package | **Quality alert ceasing package | ||
| + | <br> | ||
| − | *'''H.248.14 Inactivity timer package''' | + | *'''H.248.14 Inactivity timer package''' |
**Inactivity timer package | **Inactivity timer package | ||
| − | == Additional details == | + | <br> |
| + | |||
| + | *'''H.248.16 Enhanced digit collection packages and procedures''' | ||
| + | **Extended DTMF detection package | ||
| + | **Enhanced DTMF detection package | ||
| + | |||
| + | <br> | ||
| + | |||
| + | *'''H.248.23 Enhanced alerting packages''' | ||
| + | **Enhanced alerting package | ||
| + | **Analogue Display Signalling package | ||
| + | <br> | ||
| + | |||
| + | *'''H.248.25 Basic CAS packages''' | ||
| + | **Basic CAS package | ||
| + | **Basic CAS addressing | ||
| + | <br> | ||
| + | |||
| + | *'''H.248.27 Supplemental tones packages''' | ||
| + | **Carrier tones generation package | ||
| + | **Diagnostic tones generation package | ||
| + | <br> | ||
| + | |||
| + | *'''H.248.28 International CAS packages''' | ||
| + | **International CAS | ||
| + | **CAS blocking | ||
| + | |||
| + | <br> | ||
| + | |||
| + | *'''H.248.29 International CAS compelled register signaling packages''' | ||
| + | ** Annex A.1 only in 'enbloc' compelled mode (International CAS Compelled package - No digitmap control: Digitmaps are preconfigured on MG) | ||
| + | |||
| + | <br> | ||
| + | |||
| + | *'''Q.1950 packages''' | ||
| + | **Basic call progress tones generator package | ||
| + | **Expanded call progress tones generator package | ||
| + | **Basic services tones generator package | ||
| + | |||
| + | <br> | ||
| + | |||
| + | == Additional details == | ||
| + | |||
*Support for text mode only | *Support for text mode only | ||
| − | |||
| − | == | + | == Configuration == |
| − | *[ | + | *[[Toolpack:Protocol_Stack_Settings_D#H.248_MEGACO|Web Portal v3.0: H.248 Configuration]] |
| + | *[[Toolpack:Protocol_Stack_Settings_C#H.248_MEGACO|Web Portal v2.10: H.248 Configuration]] | ||
| + | *[[Toolpack:Protocol_Stack_Settings_B#H.248_MEGACO|Web Portal v2.9: H.248 Configuration]] | ||
| + | *[[Toolpack:Protocol_Stack_Settings_A#H.248_MEGACO|Web Portal v2.8: H.248 Configuration]] | ||
| + | <div class="mw-collapsible mw-collapsed" data-collapsetext="other versions" data-expandtext="Click here for other versions" style="width: 400px;"> | ||
| + | *[[Web_Portal_Tutorial_Guide_v2.7#H.248|Web Portal v2.7: H.248 Configuration]] | ||
| + | *[[Toolpack_v2.5:Creating_an_H.248_Configuration|Configuring H.248 on TMG devices (v2.6 and before)]] | ||
| + | </div> | ||
| + | == References == | ||
| + | |||
| + | *[http://en.wikipedia.org/wiki/Megaco Wikipedia article] | ||
| − | [[ | + | [[Category:Glossary]] |
| − | [[ | + | [[Category:Tmedia_Features|H.248/Megaco]] |
| + | [[Category:Revise on Major]] | ||
Latest revision as of 14:44, 21 September 2020
Also known as Megaco, H.248 is a protocol for controlling media gateways via a softswitch/Media Gateway Controller (MGC).
Contents |
TelcoBridges and H.248
Toolpack now supports the H.248 protocol.
As indicated in the diagram below, the H.248 stack is a module in the media gateway application residing on the application server. It communicates with the various Toolpack classes (CAFClass, CMC Library, CMC Class) as required via a new Media Leg API. In turn, the media gateway application communicates with the softswitch / media gateway controller via the H.248 protocol.
H.248 package support
Toolpack supports the following packages.
- H.248.1
- Protocol v2
- IPSec connection support
- Support UDP (2944 or user-defined)
- H.248.1 - Basic packages
- Generic
- Base Root
- Tone generator (for extension purposes only)
- Tone detection (for extension purposes only)
- Basic DTMF generation
- DTMF detection
- Call Progress Tones Generator (Ringing, Busy, Congestion and Warning tones supported)
- Basic continuity package
- Network package
- RTP package
- TDM Circuit package (only echo-cancellation)
- H.248.2 Facsimile, text conversation and call discrimination packages
- Fax/TextPhone/Modem tones detection (fax and data only)
- Call type discrimination package (fax and data only)
- IP Fax (Event: Fax Connection Change - end of fax session, call terminating)
- H.248.4 Transport over Stream Control Transmission Protocol (SCTP)
- Partial support
- H.248.7 Generic announcement package
- Generic announcement package (Fix Announcement play only)
- H.248.10 Media gateway resource congestion handling package
- Congestion handling package
- H.248.11 Media gateway overload control package
- Overload control package
- H.248.13 Quality alert ceasing package
- Quality alert ceasing package
- H.248.14 Inactivity timer package
- Inactivity timer package
- H.248.16 Enhanced digit collection packages and procedures
- Extended DTMF detection package
- Enhanced DTMF detection package
- H.248.23 Enhanced alerting packages
- Enhanced alerting package
- Analogue Display Signalling package
- H.248.25 Basic CAS packages
- Basic CAS package
- Basic CAS addressing
- H.248.27 Supplemental tones packages
- Carrier tones generation package
- Diagnostic tones generation package
- H.248.28 International CAS packages
- International CAS
- CAS blocking
- H.248.29 International CAS compelled register signaling packages
- Annex A.1 only in 'enbloc' compelled mode (International CAS Compelled package - No digitmap control: Digitmaps are preconfigured on MG)
- Q.1950 packages
- Basic call progress tones generator package
- Expanded call progress tones generator package
- Basic services tones generator package
Additional details
- Support for text mode only
Configuration
- Web Portal v3.0: H.248 Configuration
- Web Portal v2.10: H.248 Configuration
- Web Portal v2.9: H.248 Configuration
- Web Portal v2.8: H.248 Configuration
