Batboard

Can anyone tell me if there is a way to break out the audio for 6 different talkgroups on a SZ 4.1 system, at the infrastructure somewhere? That is, given access to all of the infrastructure hardware and controllers, is there a simple way to pull line-level (or other) audio out of the system for specific talkgroups?

This is just a conceptual question - I'm not looking for specific plans or pins, just curious if the system is capable of it, or if it had to be done what the course of action would be.

Thanks all!

Individual talkgroup audio can be 'de-trunked' in a Smartzone infrastructure by installing logging interface cards & appropriate programming in the CEB.

Alternatively, you could look at one of the new trunked logging recorders from companies such as Nice. These record all the radio traffic by recording the radio channels and by decoding and recording the control channel data. That way they can reconstruct any conversation from any talkgroup.

These recorders can be very effective on a big system. A ten channel system, for example, might have a couple hundred talkgroups - maybe 50 or 60 of them of major interest [law, fire, dispatch, tactical, ops, etc] that you would record. That would take a 64 track machine - 64 real hardware inputs[expensive] - and the corresponding complexity in the CEB[also expensive].

With the trunked recorder - all you have is 10 actual audio tracks being recorded - very efficient.

For just six talkgroups - the traditional CEB based approach is probably the most cost effective.

XMO is correct, You need 2 cards in one of the CEB's (make sure you have enough time slots available to handel the extra audio).

You need a LOMI and an AEB. This will handel 8 talkgroups of audio. Resources are added in the CDM and then the card in the Embasy and all the cards in the CEB need to be programmed.

Audio comes out a 25-pair cable/punch block.

Alan wrote:XMO is correct, You need 2 cards in one of the CEB's (make sure you have enough time slots available to handel the extra audio).

You need a LOMI and an AEB. This will handle 8 talkgroups of audio. Resources are added in the CDM and then the card in the Embasy and all the cards in the CEB need to be programmed.

Audio comes out a 25-pair cable/punch block.

Actually, you also need a LORI (logging operator recording interface) card. The LOMI can make up to 16 talkgroups available for logging, but only has outputs for 4. The AEB can also output up to 4, and you can use up to 3 AEB cards to give the 16 outputs (LORI=4, AEB=4x3=12).

The outputs from the LOMI and AEB(s) go to the LORI card, which can handle up to 8 audio inputs...2 LORI cards are required for more than 8 audio paths. It's the LORI card which has the 25-pair connector on the output for connection to the punchblock.

Todd