Reference Manual

Description 25 (37)
LRN/X-99:083 Rev F 2001-07-17 © Ericsson. Commercial in confidence
5.3 GSM 900 Configurations
The configurations are the maximum configurations within a given number of CDUs. The
single cell configuration can be duplicated or triplicated to form multicell configurations by
for instance utilising the Multi Drop functionality.
Table 7. Configurations for GSM 900 with CDU-G without hybrids used in the dTRUs
(uncombined mode).
Max
Config
No. of
cabinets
TMA Number
of CDU’s
Number of Antennas
1
CDU
type
1x2 1 Opt. 1 (2) G
2x2 1 Opt. 2 (2)(2) G
3x2 1 Opt. 3 (2)(2)(2) G
Table 8. Configurations for GSM 900 with CDU-G with hybrids used in the dTRUs
(combined mode).
Max
Config
No. of
cabinets
TMA Number
of CDU’s
Number of Antennas
1
CDU
type
1x4 1 Opt. 1 (2) G
1x8 1 Opt. 2 (4) G
1x12 1 Opt. 3 (6) G
2x4 1 Opt. 2 (2)(2) G
2x6 1 Opt. 3 (3)(3) G
3x4 1 Opt. 3 (2)(2)(2) G
Table 9. Configurations for GSM 900 with CDU-F.
Max
Config
No. of
cabinets
TMA Number
of CDU’s
Number of Antennas
1
CDU
type
1x4 1 Opt. 1 (2) F
1x8 1 Opt. 2 (2) F
1x12 1 Opt. 3 (2) F
2x4 1 Opt. 2 (2)(2) F
2x6 1 Opt. 3 (2)(2) F
3x4 1 Opt. 3 (2)(2)(2) F
8+4
2
1 Opt. 3 (2)(2) F
4+8
2
1 Opt. 3 (2)(2) F
1
The number of physical antennas is reduced if cross-polarised antennas are used.
2
Two sector configurations