DUL 20

GPS (RJ45)
Connection for an Ericsson GPS module, contains 1PPS and UART signals

EC (RJ45)
Environment Control? Probably some RS-485 to control fans, power management, UPS, ...

AUX (RJ45) ??

LMT A (RJ45)¶
A RS-232 on RJ45 for Local Maintenane use. IT provides access to COLI (COmmand LIne).   username: rbs ?  password rbs ?

The pinout is shown below. Please note it is different from RBS3000!, but identical to that of the DUG 20

RJ45	DB9	Name
1	5	GND
2	3	TXD (of PC)
3	2	RXD (of PC)
The [default?] baud rate settings are 9600 8N1.

This port provides RS-232 access to the OSE shell


LMT B (RJ45)¶
Site LAN Ethernet, for adminstrative purpose 169.254.1.10/16   username:  rbs passeord rbs

N A (RJ45)
Transmission Ethernet, i.e. the back-haul interface for S1. RJ-45

TN B (SFP)
Transmission Ethernet for optical back-haul. Can use normal SFP modules.

L (HSIO)
Inter-DU-Link for cross-connecting multiple DU.

RI A..F (SFP)
Radio Interface (CPRI) using either SFP transceivers for RRU connection or copper interconnect cables for RU.