![](/images/new-backgrounds/1209405/20940535x1.webp)
Figure
System architecture of a DualMode Metrocell
PSTN
Trunk | |
|
Digital Transmission
Facility
DualMode
Metrocell
Figure
Digital ready cellular product
DMS - MTX
voice and control
voice & control
DRU
DRUM
ICP
SWITCH SITE
ICRM | control |
CSM2
control
ACU
CELL SITE
There are at least two equipment frames in a Metrocell, a Universal Common Equipment (CE) Frame and a Metro Radio Frequency (RF) Frame. The cell site can be expanded or sectorized by adding more Metro RF frames as traffic grows. The number of Metro RF frames is determined by the cell site configuration and the channel capacity. Figure