Panasonic KX-TG3411BXH Service Manual page 8

KX-TG3411BX/KX-TG3412BX/KX-TG3419BX/KX-TGA341BX
4.1.2.1. TDD Frame Format
Up Link ( Handset - > Base Unit )
RX1 RX2
DATA rate : 576 Mbps
4.1.2.2. TDMA system
This system is the cycles of 10 ms, and has 6 duplex paths,
but maximum duplex communication path is 5 because of dummy bearer use.
In 1 slot 833 us, the 10 ms of voice data is transmitted.
Each slot makes every frame frequency hop. (100 hops/sec.)
Although each slot (UpLink3 and UpLink4) uses different frequency, UpLink3 and DownLink3 use the same frequency.
• 2 - Handsets Link
Traffic Bearer
A link is established between base unit and handset.
The state where duplex communication is performed.
The hopping pattern of a 75 hops (750 mseconds) cycle.
Dummy Bearer
The base unit sends Dummy-data to the all stand-by state handsets.
The handsets receive that data for keeping synchronization and monitoring request from the base unit.
Dummy Bearer doesn't contain B-field (sound) data.
5 ms
RX3 RX4 RX5
Traffic Bearer
RX1 RX2 RX3 RX4 RX5 RX6 TX1 TX2 TX3 TX4 TX5 TX6
Base unit
Handset 1
(Stand by)
Handset 2 TX
(Link)
Handset 3
(Link)
Down Link ( Base Unit - > Handset )
RX6 TX1 TX2
833 µs
Dummy bearer
RX
TX
8
5 ms
TX3 TX4 TX5
RX
TX6