Nortel Networks 411-2021-111 manual Receive cabling, Component requirement, No, Frames TRUs ATCs

Cell Site Layouts 3-7

Receive cabling

In the reverse path, the receive signal from the main antenna is connected to the A-input of the Receive Multicoupler (RMC) through the receive port of the duplexer. The diversity antenna connects directly to the B-input of the RMC. Distribution of the reverse path frequencies is accomplished by RF splitters within each RF frame.

Table 3-3 shows the connection between the RMC and the splitters.

Table 3-3

RMC to splitter connections for an Omni Metrocell

From	Through		To
Main antenna	RMC 1A - A1	TRU Shelf 1		Splitter 1
Diversity antenna	RMC 1B - B1	TRU Shelf 1		Splitter 4
Main antenna	RMC 1A - A2	TRU Shelf 2		Splitter 1
Diversity antenna	RMC 1B - B2	TRU Shelf 2		Splitter 4
Main antenna	RMC 1A - A3	TRU Shelf 3		Splitter 1
Diversity antenna	RMC 1B - B3	TRU Shelf 3		Splitter 4

Component requirement

Table 3-4 lists the components required for a Metrocell with one to five RF Frames. An omni cell site requires only one Receive Multicoupler (RMC).

Table 3-4

Component requirement for an omni Metrocell

	No. of RF	No. of	No. of	Duplexer	ICRM TCM		No. of
	Frames	TRUs	ATCs	per frame	Port cards		antennas
Configuration	1	3 to 20	1 to 3	1	2	1	TX/RX, 1 RX
with up to 20
	2	21 to 40	4 to 6	1	4	2	TX/RX
channels per
	3	41 to 60	7 to 9	1	6	2	TX/RX, 1 TX
RF Frame
	4	61 to 80	10 to 12	1	6	2	TX/RX, 2 TX
	5	81 to 100	13 to 15	1	8	2	TX/RX, 3 TX
Configuration	1	3 to 24	1 to 3	2	2	2	TX/RX
with up to 24
	2	25 to 48	4 to 6	2	4	2	TX/RX, 2 TX
channels per
	3	49 to 72	7 to 9	2	6	2	TX/RX, 4 TX
RF Frame
	4	73 to 96	10 to 12	2	6	2	TX/RX, 6 TX
	5	97 to 120	13 to 15	2	8	2	TX/RX, 8 TX

Note: An additional TCM port card is required for the DRUM, the ACU and the CSM2.

DMS-MTX DualMode Metrocell Cell Site Description