Cellular Network Infrastructure » Radio Access Network » OsmoBSC

== Power Connection ==

The Hirschmann plug used for the power connection is called ''Hirschmann Leitungsdose CA 4 LD 09 ZS'' and has the product number

932 362-100. The BS-11 includes one such plug, so unless you loose it, damage it or want multiple power cables, there is no need in obtaining this plug separately.

The pin-out is as follows:

 * GND: your shealding/earth line (PE), German:yellow/green wire

 * 1: phase (L), German: Brown wire

 * 2: not connected

 * 3: neutral (N), German: Blue wire

Please refer to the photograph of a fully wired plug:

[[Image(ps_plug.jpg, 25%, align=right)]]

== E1 Hardware interface ==

We are using a 120 Ohms balanced connection between the BS11 and a HFC-E1 card.

To configure the BS11 hardware correctly, you need to

 * open the connection between pin 2 and 3 of the 4 jumpers below connector J01

=== Cable to RJ45 ===

The E1 interface[s] of the BS-11 are on some strange BNC-related twinax plugs called "BR2" (Radiall product # 605006000), you can find the PDF data sheet of the connectors at [http://radiall.applixia.net/catalogue/resource?path=PRODUCT/PDF/TDS/coaxialconnectors/R605006000EN.pdf Radiall].  There are four such plugs included in the BS-11 package.  If  you need more, you can buy them online from [http://webradiall.applixia.net/buyonline?PN=R605006000&LANG=en&SUP=FARNELL this link] (which for Germany results in a hyperlink to [http://de.farnell.com/jsp/displayProduct.jsp?sku=4196995 this page of the Farnell webshop] where they cost EUR 16.51 each).

 * left Y01 PCM in (from BSC): RJ45 pin 4,5

 * Y02 PCM out (to BSC): RJ45 pin 1,2

 * Y03 PCM left open

 * Y04 PCM left open

the polarity of the two wires (4,5) or (1,2) inside one twinax plug does not matter, as the signals are symmetric anyway.

== Configuration of BTSM Object ==

=== bs11_config ===

If you're using [wiki:bs11_config], then the configuration is compiled-in (thus automatically

correct) and you can only change it by changing the source code.  

=== LMT ===

If you're using LMT, you have to use the following settings for the BTSM object:

 * Start LMT Release 04.21(!) and make sure the cable is connected.

 * Set the serial port to the port you connected your serial console

   cable to

 * Logon as Administrator (Password is "admin")

 * The factory configuration will not have any software installed

   (Phase will show Software required)

 * Select Software->Download SM Safety Load to load BTSBMC76.SWI from

   the HS010876 directory

 * After the download completes the BTS will restart and enter Phase

   Wait Min Config

 * Create an Object "LI", "GPSU", "ALCO", "CCLK", "BBSIG 0", with the

   default config

 * Create an Object "PA 0" with the following config: "GSM 0,03W(M3)"

   This point is important to reduce the antenna power output!

 * You will need a special password to activate "BBSIG 1" and "PA 1"

   Configuration is analog to Channel 0

 * Create Object "EnvaBTSE 0" up to "EnvaBTSE 3" with the default

   options

 * As soon as all configuration options are set up the BTS will enter

   the Maintenance phase and you will be able to load the main firmware

 * Select "Download SM" in and select the file HS011106.SWL from the

   HS011106 directory

 * Grab a coffee and occupy yourself for about 45mins

 * In BTSM Object set Timeslot no. to 1, Subslot no. to 64kbit/s

   signalling and TEI to 25