54 lines
2.3 KiB
Plaintext
54 lines
2.3 KiB
Plaintext
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. Alternatively, you can wait for inbound audio to
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re-activate the rewrite, then respond during the CallHang period.
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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
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neccesary, it may be advantageous to also disconnect the repeater from the
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reflector system first, if using slot 2.
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Talk-group rewrite was originally intended to work with User-Activated talk
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groups, although it will function with permanent talk-groups too.
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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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In addition to the above, there is also the capability ro rewrite voice prompts
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on link/unlink so all users can hear them on TG9.
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Configuration options are as follows:
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TGRewriteSlot1=[0|1]
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TGRewriteSlot2=[0|1]
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BMAutoRewrite=[0|1]
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BMRewriteReflectorVoicePrompts=[0|1]
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Note at present, Auto rewrite is the only type of rewrite that is implemented so
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to do something useful, this option must be set.
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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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