1.5. Local Area Channel and Wide Area Channel

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The MOTOTRBO repeater in the IP Site Connect mode supports two TDMA time slots (two logical channels). The channel can be a Local Area Channel (LAC) to repeat the on-site traffic over the air or a Wide Area Channel (WAC) to send the traffic to the peers.

In IP Site Connect, Wide area channels include channels from multiple repeaters. However, WAC can host only one call at a time.

The traffic received over the air in the WAC is sent out to all the peers by the MOTOTRBO repeater.

At the WAC, the voice, data and control packets can be exchanged across disperse locations and different radio frequency bands.
At the LAC, the traffics received over the air in the LAC are sent out to the third party application peers only.

 

At the WAC, the MOTOTRBO repeater transmits the IPSC voice, data and control messages received at the network interface over the air regardless of whether the message is sent by another MOTOTRBO repeater or a third party application peer.

However, at the LAC, the MOTOTRBO repeater do not transmits voice and data from the third party application peer over the air. So 3rd party application peers can only receive voice and data from radio network but cannot send anything to the radio network.

 LAC-WAC2.png

 

It is possible to configure a repeater such that

  • • Both logical channels work in IP Site Connect mode (i.e. over wide area).

 WAC2.png

 

  • • Both logical channels work in digital repeater mode (i.e. single site over local area).

 

 LAC2.png

 

  • • One of its logical channels works in IP Site Connect mode (i.e. over wide area) and the other logical channel works in digital repeater mode (i.e. single site over local area).

 LAC-WAC.png

 

 LAC-WAC1.png

 

So slot(s) which is(are) selected in repeater codeplug (MOTOTRBO CPS) operates as Wide Area Channels.

 

 

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