Nortel Networks 411-2021-111 manual System architecture of a DualMode Metrocell

1-2Introduction

Figure 1-1

System architecture of a DualMode Metrocell

PSTN

Trunk DMS-MTX

Digital Transmission

Facility

DualMode

Metrocell

Figure 1-2

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 1-3 shows the frames and the components of a DualMode Metrocell.

411-2021-111 Standard 01.01 June 1996