41 lines
1.8 KiB
Text
41 lines
1.8 KiB
Text
Talk-Group Rewrite was conceived as a way of making talk-groups behave more
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like the reflector system and of attempting to solve the problem of "slot
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contention",where the user may be locked out of a slot by traffic on a
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talk-group they know nothing about, without knowing why. This is frustrating to
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users, both those new to DMR and seasoned DMR users.
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TG Rewrite, when enabled for a slot, rewrites the DST ID of incoming talkgroup
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traffic to TG9, alowing audio to be heard by any user monitoring TG9 on that
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slot. If the user then replies on TG9, as long as they key-up during the
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CallHang period, the DST ID (TG) is again rewritten on the outbound traffic,
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which transparently maps back to the originating talkgroup. Rewrite is also
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enabled if an outbound call is made to a talkgroup and then TG9 is activated
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during the callhang period.
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To use a User Activated talk-group, briefly key-up on that talk-group to
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activate it, then switch back to TG9 and talk as normal. If the CallHang period
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expires, you may need to activate the talk-group again by keying up on that
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talkgroup briefly, as before.
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Note, proper ettiquette dictates that the user confirms the repeater is free
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before activiating this feature. It is best to ensure the slot is keyed from
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"cold" when activating a talkgroup for rewrite. Although not strictly neccesary,
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it may be advantageous to also disconnect the repeater from the reflector system
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first, if using slot 2.
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It is useful to set the CallHang parameter to a generous amount. I am currently
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using seven seconds.
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Two boolean configuration options control the TG Rewrite feature:
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TGRewriteSlot1=[0|1]
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TGRewriteSlot2=[0|1]
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ACL's are applied before the rewrite, so still apply to rewritten traffic on
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original (non-rewritten) talk-group.
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73
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Simon (G7RZU)
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