53 lines
2.3 KiB
Text
53 lines
2.3 KiB
Text
Talk-Group Rewrite was conceived as a way of making talk-groups behave more
|
|
like the reflector system and of attempting to solve the problem of "slot
|
|
contention",where the user may be locked out of a slot by traffic on a
|
|
talk-group they know nothing about, without knowing why. This is frustrating to
|
|
users, both those new to DMR and seasoned DMR users.
|
|
|
|
TG Rewrite, when enabled for a slot, rewrites the DST ID of incoming talkgroup
|
|
traffic to TG9, alowing audio to be heard by any user monitoring TG9 on that
|
|
slot. If the user then replies on TG9, as long as they key-up during the
|
|
CallHang period, the DST ID (TG) is again rewritten on the outbound traffic,
|
|
which transparently maps back to the originating talkgroup. Rewrite is also
|
|
enabled if an outbound call is made to a talkgroup and then TG9 is activated
|
|
during the CallHang period.
|
|
|
|
To use a User Activated talk-group, briefly key-up on that talk-group to
|
|
activate it, then switch back to TG9 and talk as normal. If the CallHang period
|
|
expires, you may need to activate the talk-group again by keying up on that
|
|
talkgroup briefly, as before. Alternatively, you can wait for inbound audio to
|
|
re-activate the rewrite, then respond during the CallHang period.
|
|
|
|
Note, proper ettiquette dictates that the user confirms the repeater is free
|
|
before activiating this feature. It is best to ensure the slot is keyed from
|
|
"cold" when activating a talkgroup for rewrite. Although not strictly
|
|
neccesary, it may be advantageous to also disconnect the repeater from the
|
|
reflector system first, if using slot 2.
|
|
|
|
Talk-group rewrite was originally intended to work with User-Activated talk
|
|
groups, although it will function with permanent talk-groups too.
|
|
|
|
It is useful to set the CallHang parameter to a generous amount. I am currently
|
|
using seven seconds.
|
|
|
|
In addition to the above, there is also the capability ro rewrite voice prompts
|
|
on link/unlink so all users can hear them on TG9.
|
|
|
|
Configuration options are as follows:
|
|
|
|
TGRewriteSlot1=[0|1]
|
|
TGRewriteSlot2=[0|1]
|
|
BMAutoRewrite=[0|1]
|
|
BMRewriteReflectorVoicePrompts=[0|1]
|
|
|
|
Note at present, Auto rewrite is the only type of rewrite that is implemented so
|
|
to do something useful, this option must be set.
|
|
|
|
|
|
ACL's are applied before the rewrite, so still apply to rewritten traffic on
|
|
original (non-rewritten) talk-group.
|
|
|
|
73
|
|
|
|
Simon (G7RZU)
|
|
|