Huawei BTS3900C - Page 37

36
Appendix
Pin assignment for the wires of the 120-ohm E1 surge protection transfer cable
Pin on the DB26
Connector
Wire Color Wire Type Label
X.1 Blue Twisted pair R1
X.2 White
X.3 Orange Twisted pair R2
X.4 White
X.5 Green Twisted pair R3
X.6 White
X.7 Brown Twisted pair R4
X.8 White
X.19 Green Twisted pair T1
X.20 White
X.21 Blue Twisted pair T2
X.22 Red
X.23 Orange Twisted pair T3
X.24 Red
X.25 Green Twisted pair T4
X.26 Red