- This topic has 13 replies, 1 voice, and was last updated 9 years, 7 months ago by sofi.
27th April 2008 at 10:25 #52157msaGuest
can any one give information details about Siemens BS240XL28th April 2008 at 10:34 #52158TotoGuest
Its a a very good and effeicient BTS and it can handle 12 CUs and based on the SW version and CU it can work as 12 TRXs or it also can reach to 24 TRX if you will be using the FCU in BR9, also it can handle 6 ANTENNA Combiners DUAMCO or FDUAMCO to have the 900 and the 1800 frequency in the same BTS28th April 2008 at 12:33 #52159HankeeGuest
I agree with Toto, but in FourToTwo mode (4 trx per cell) there is an significant power reduction (aprox. 50% from nominal – 16W vs 40W), in other words, you increase traffic, but decrease coverage area.13th May 2008 at 14:41 #52160MarcoGuest
Hi msa, please try to be more specific with your requirement.
As Toto says, BTS240XL is efficient but has a terrible problem with its hardware. I had many problems with alarms related to FDUAMCO’s (at the VSWR DETECTOR and LNA stage). But the critical problem occurs when the combiner is damaged because it doesn’t present an alarm and the RF output power decreases in 12 to 20dB. As a result, call setup fails increases at rates from 6% to 20% depending on how many TRX you have installed31st May 2008 at 20:00 #52161RedouaneGuest
We recently experienced in our network that expanding a cell to 8 trx’s by combining a FDUAMCO+COMACO in 8:2 config leads, if the any FCU is connected to that COAMCO, to bad CSSR unless we connect the FCU to the FDUAMCO and the simple CU to the COAMCO ( eg 2 FCU through FDUAMCO and simple CU to COAMCO is ok , but FCU and 1 CU to COAMCO and 1 FCU and 1 CU to DUAMCO nok) .
Does any have seen that recently ? for nsn it is still under investigation.
Regards3rd June 2008 at 09:20 #52162VusiGuest
Can any one give some tips on how to upgrade from 8 TRx to 12 using the same feeder Cables.11th August 2008 at 15:13 #52163BAGHIGuest
IN BTS240 SIEMENS RACK SERVICE I HAVE BROBLEME THE (ROLLY THE BASCULEMENT )BETWIN REDRESSEUR AND BATTERY .
PLEAS GIVE ME INFORMATION ABOUT RACK SERVICE (-48V) of BTS and how worke whithe probleme rolly the basculement a cause annuly alarme energie.24th September 2008 at 07:22 #52164RedouaneGuest
You can use a DIPLEXER to have 12 TRX in the same cell 🙂6th July 2009 at 16:53 #52165DERIAN MERCHANGuest
SEÃ‘ORES(AS).POR FAVOR SI USTEDES TIENEN INNFORMACION GENERAL DE Q ES UNA BTS ,QUE PARTES LA COMFORMAN,SUS FUNCIONES Y EN GENERAL , AGRADESERIA ESTA INFORMACION.26th October 2009 at 07:57 #52166kishor kumar c.bGuest
i need to study more about bts bse and mse26th October 2009 at 09:23 #52167lioGuest
Yes you need to study a lot27th October 2009 at 15:34 #52168kishor kumar c bGuest
i need some more tips about b t s28th January 2010 at 02:57 #52169Grace W. K.Guest
What is a COAMCO and an XL rack and what are their functions in a BTS? Thanks.4th June 2011 at 09:34 #52170sofiGuest
can any one give me information details about comissionning COBA and all kinds of Siemens rack