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Installation Manual – BTS3606 Cabinet Installation
Airbridge BTS3606&3606A CDMA Base Station
Table 4-4 Correspondence between the E1 cable and DB25 connector
Cable
W1
W2
W3
W4
W5
W6
W7
W8
4.6.2 Introduction to DB25 Connectors
There are four external DB25 connectors on the E1 lightning protection board on the
cabinet top. Each connector can connect four E1 cables.
The four DB25 connectors are numbered E1_0, E1_1, E1_2, and E1_3 from the front
to the back.
E1_0 and E1_1 correspond to the BCIM in Slot 0, and E1_2, E1_3 to the BCIM in
Slot 1.
4.6.3 Installation Procedure
To install E1/T1 trunks, proceed as follows:
1)
Determine the number of DB25 connectors according to the number of T1/T1
trunks configured.
No.
Initial PIN
X0.24
1
X0.25
X0.13
2
X0.12
X0.11
3
X0.10
X0.9
4
X0.8
X0.7
5
X0.6
X0.5
6
X0. 4
X0.3
7
X0.2
X0.14
8
X0.15
Select E1_0 if there are not more than four trunks.
Huawei Technologies Proprietary
End PIN
X1.Tip
X1.Ring
X2.Tip
X2.Ring
X3.Tip
X3.Ring
X4.Tip
X4.Ring
X5.Tip
X5.Ring
X6.Tip
X6.Ring
X7.Tip
X7.Ring
X8.Tip
X8.Ring
4-22
Chapter 4 Installing Cables
Label
Remarks
CHAN 0 TX
CHAN 0
CHAN 0 RX
CHAN 1 TX
CHAN 1
CHAN 1 RX
CHAN 2 TX
CHAN 2
CHAN 2 RX
CHAN 3 TX
CHAN 3
CHAN 3 RX
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