Tait TB9100, Installation And Operation Manual

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TB9100 Installation and Operation Manual Technical Description 107
© Tait Electronics Limited May 2006
Standby mode
In standby mode, the IP network is ignored. The microphone and speaker
operate as in run mode, but terminals and dispatchers cannot talk.
The following table is interpreted in the same way as Table 8.1 .
The switching rules are explained as follows:
1. No streams are sent to the channel group (IP network), or received from the channel
group.
2. The microphone and speaker can talk to the RF interface in channel group simplex
and duplex modes.
3. The microphone and speaker can talk to the analog line interface in channel group
simplex mode.
4. The analog line and RF interfaces cannot talk or listen to each other.
Signaling messages
Signaling messages are switched in sequence with voice streams. That is, if a
signaling message precedes an FM or P25 transmission, the sequence of
transmission is preserved at all interfaces.
The voting rules for switching messages are the same as the switching rules
for a P25 terminal or line originated stream.
Table 8.2 Base station voice switching and voting priority order: standby mode
Input Source
Direction
(duplex)
RF Tx Speaker Analog Line IP
1
Microphone Network - lower IP address outbound No No No No
Microphone Local outbound Yes
2
No Simplex
3
No
Microphone Network - higher IP address outbound No No No No
Analog line Network - lower IP address outbound No
4
No No No
Analog line Local outbound No
4
Simplex No No
Analog line Network - higher IP address outbound No
4
No No No
P25 terminal Network - higher quality inbound No Yes No No
P25 terminal Local inbound No Yes No No
P25 terminal Network - lower quality inbound No Yes No No
Analog terminal Network - higher quality inbound No Yes No No
Analog terminal Local inbound No Yes No No
Analog terminal Network - lower quality inbound No Yes No No