I am very interested in using the radio option in conjunction with my already created asterisk network, but I have no experience in the radio part nor have I any close idea about.

I studied this application requirements and saw the hardware needed they describe a radio quad which uses RJ 45 but I can't see
where the RJ goes in order to be able to communicate  with the radio devices, I have absolutely no knowledge in two way radio
devices so I hope some one could complete the full picture for me behind the radio quad.

And what I plan to use this feature is to expand my * PBX network to remote sites and use it to talk to
onsite engineers through the two way radio devices  using iaxrpt.
 

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Thx
MAG