View source for DMRA AIS ← DMRA AIS

Since version BrandMeister Core 20211222-205035 has support of DMRA AIS.

DMR Application Interface by DMR Association is a general-use IP-based interface for DMR applications and interworking. It is quite abstract and allows vendor's specific deviations. Also it is a bit slow due to complicated procedures (for example, call setup).

During the implementation we tried to provide flexibility of connector. To follow that approach most of specific procedures, such as registration business-logic are moved to Lua code of Registry. On this way, for example, you are able to register all subscribers of BrandMeister Network in an interconnected DMR Tier 3 network.

== Limitations ==

* On initial releases only voice calls supported
* Only AMBE encoding (payload type DMRA-AIS) is supported, g.711 is not supported (and will never been supported)
* AIS Connect configured as a network-type connection, any call will change user's location while routing
* BrandMeister Core supports multiple calls with each peers (maximum amount of concurrent calls per peer depends on amount of configured RTP ports)
* Slot property has only informational meaning, Core doesn't check slot's state like it does with repeater-type connections
* Due to security reasons each connection limited to static IP (domain name is resolved during the start or forced connection)
* Supported one address of Control Gateway and only one of Media Gateway (may differ from Control Gateway)
* No keep-alives
* Digest / MD5 authentication is supported (username equals to connection profile ID), but in case of Hytera's equipment doesn't work (Hytera's bug)
* Connection profile ID is used as contact name