> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/ss7-and-signalling/software-signaling-protocols.md). # Software:Signaling Protocols The most recent signaling protocols have inherent redundancy and high availability features. For the other signaling protocols, there are still way to improve service availability. ### TMG800 / TMG3200 Series #### [SS7](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) TelcoBridges recommends to use 2 timeslots as MTP2 links on different line interface. This will protect against [E1/T1](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/transmission/t1-e1-and-j1-interfaces/README.md) or [DS3](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/ds3-interfaces/README.md) failure. Also, the [TMG3200-DS3](http://www.telcobridges.com/en/tmg3200.aspx) and [TMG3200-STM1](http://www.telcobridges.com/en/tmg3200.aspx) have 2 signaling ports that can be configure as MTP2 links. The following example shows the redundancy of [MTP2](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp2/README.md) links. ![TMG3200 MTP2 Redundancy Setup](https://docs.telcobridges.com/w/images/4/46/Ha_TMG3200_MTP2.png) The [SS7](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) network is still available even if 1 link goes down. ![TMG3200 MTP2 Redundancy Setup With Link Down](https://docs.telcobridges.com/w/images/1/1c/Ha_TMG3200_MTP2_Link_Down.png) #### [SIGTRAN](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) [SIGTRAN](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) supports multiple destination addresses and peers to create redundancy. The following example shows how [M2UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sigtran-m2ua/README.md) can take advantage of the [Tmedia](https://telcobridges.com/media-gateways/products/tmedia-gateways/) dual VoIP interfaces to create a redundant system (Note: [M2PA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/m2pa/README.md) and [M3UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/m3ua/README.md) have similar features). ![TMG3200 M2UA Redundancy Setup](https://docs.telcobridges.com/w/images/b/b1/Ha_TMG3200_M2UA.png) The [M2UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sigtran-m2ua/README.md) system is still operational even if there is a network failure. ![TMG3200 M2UA Redundancy Setup](https://docs.telcobridges.com/w/images/6/63/Ha_TMG3200_M2UA_Network_fail.png) The [M2UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sigtran-m2ua/README.md) system is still operational even if a [M2UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sigtran-m2ua/README.md) peer goes down. ![Power Distribution Recommended Setup](https://docs.telcobridges.com/w/images/5/5b/Ha_TMG3200_M2UA_Peer_fail.png) ### TMG7800 #### CAS/ISDN/SIP With [TMG7800](https://telcobridges.com/media-gateways/products/tmedia-gateways/tmg7800/) system composed of multiple telecom units, it is recommended to spread the TDM connections between the providers between the telecom units. The next example shows 2 TMG7800 Telecom units connected to 2 providers with ISDN stacks load shared between them (CAS and SIP can be configured in a similar fashion): ![TMG7800 TDM Interfaces Load Sharing](https://docs.telcobridges.com/w/images/6/69/Ha_TMG7800_TDM_Load_Share.png) Even if a telecom units fails, all the providers will be accessible through other unit: ![TMG7800 TDM Interfaces Load Sharing With Telecom Unit Failure](https://docs.telcobridges.com/w/images/7/70/Ha_TMG7800_TDM_Load_Share_Fail.png) #### SS7 TelcoBridges [SS7](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) stack has a multitude of redundancy mechanism that can fortify a [TMG7800](https://telcobridges.com/media-gateways/products/tmedia-gateways/tmg7800/) system against failure. * [MTP2](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp2/README.md) Link Redundancy * [MTP3](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp3/README.md) Layer is shared between multiple telecom units * [ISUP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/isup/README.md) Layer Redundancy With the TMG7800, it is recommended to configure the [Tmedia](https://telcobridges.com/media-gateways/products/tmedia-gateways/) system with at least 2 [MTP2](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp2/README.md) links each on different telecom units and 2 [ISUP](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/isup/README.md) each one stack on different TMG7800 telecom units. In the following example, the system [SS7](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) will still be operational whether a link, stack or [TMG7800](https://telcobridges.com/media-gateways/products/tmedia-gateways/tmg7800/) telecom units failure. ![TMG7800 Recommended SS7 Network Configuration](https://docs.telcobridges.com/w/images/b/bb/Ha_TMG7800_SS7_Network.png) #### SIGTRAN The [TMG7800](https://telcobridges.com/media-gateways/products/tmedia-gateways/tmg7800/) can really create a fully redundant [SIGTRAN](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) system, it supports multiple destination addresses, multiple peers. The following example shows a [SIGTRAN](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) system with 2 [MTP2](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/mtp2/README.md) links, 2 [M2UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sigtran-m2ua/README.md) links and 2 [M2UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/sigtran-m2ua/README.md) peers (Note: [M2PA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/m2pa/README.md) and [M3UA](https://github.com/telcobridges-main/tmedia-wiki/tree/main/reference/protocols/m3ua/README.md) have similar features). ![TMG7800 M2UA Redundancy Setup](https://docs.telcobridges.com/w/images/f/f5/Ha_TMG7800_M2UA.png) --- # Agent Instructions This documentation is published with GitBook. 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