For IP Site Connect systems, there is now a fairly simple solution which a colleague has tested and successfully demonstrated it. The solution was not really intended for this but we have seen that it works and that it can solve the problem I've described above.
The Vertex Standard EVX-Link is a DMR-Radio-to-IP link that allows you to link sites, via EVX5300/5400 mobile radio, and an IP link.
Now if we co-locate two mobile radios on one site, we could provide a two way RF link between two locations - in this case two repeater sites.
The below drawing illustrates this better: Site A is part of the IP Site Connect system and has IP connectivity with the Master and the other Peers. Site C does not have any connectivity because Site B prevents you installing a microwave link; and because the location of Site C is very remote.
You would install the EVX Site Link, I will describe below, on Site B.
|Site A has IP connectivity whereas site C has none. The link is at site B.|
|The EVX Site Link (installed at Site B)|
The two Mobiles+EVX Links can be separated as the connection between them is Ethernet.
There are also some configuration possibilities such as repeater-to-repeater or radios-to-repeater (note the frequencies).
|Repeater to repeater|
|Radios to repeater|