MD110 - DECT base stations won't connect to ELU31 card

[DrewPeacock]

Hello PABX enthusiasts!

I am hoping someone can help with a problem; we have a single ELU31 card in our PABX, to which there are 7 DECT base stations connected. These had all worked fine for several years, until recently when the PABX was powered up after a shutdown, 3 of the base stations would not connect to the ELU31 (red status lights on the base stations - not showing operable with CXCFP). To improve coverage we move a few of the working 4 base stations around and they DID work in their new positions, indicating that the wiring and ELU card was OK. Then a few weeks later the remaining 4 base stations also failed (same problem).

We installed new base stations and these would still not connect.

We have installed a new ELU31 card, now the new base stations will not connect at all, however bizarrely the old ones do connect for a few seconds (show "operable" with CXCFP) then drop out again.

We have a base station connect directly to the rack to rule out cabling problems (although the cables have been checked and found OK).

I have read about synchronisation issues - but this seems to refer to systems with multiple ELU31s, and we only have 1. The sync cables is fitted - it just loops in and out of the ELU31.

I am far from an expert on PABXs and am struggling to find decent info on this system, so if anyone can offer any advice it would be greatly appreciated!

Cheers,

Drew.

 

[doktor]

To be able to comment, I need to know the software level of the MD110 / MX-ONE and the s/w level of the ELU-31.
S/W level of ELU-31 -> CNBIP:BPOS= (where the ELU-31 is placed);
S/W level of MD110 -> CADAP; and S/W level of MX-ONE -> ts_about.

///doktor

 

[doktor]

Normally we install only 6 basestations for each ELU-31 in order not to overload the ELU-31 board.
So, maybe, the ELU31 board was overloaded, and got "a bit" defective.
Another isssue I have discovered is that if one basestation is defective, this one can drag down the whole system. Did you swap any hardware?


///doktor

 

[DrewPeacock]

Thanks for the reply Doktor.

Here is the info you asked for:

<CNBIP:BPOS=001-0-00;

DEVICE BOARD REVISION INFORMATION
DATE: 11JUN12   TIME: 00:21:08

BPOS       BOARD/BRDID  PRODUCT NUMBER       REVISION STATUS ADD
           /IND

001-0-00   ELU31        ROF1375412/1         R2C                             
                        CAA 158 0010         R9A    EXE                    

END
<CADAP;
CALENDAR DATA
IDENTITY=25-0253        
VERSION=CXP1010125/4/TSWSP04/R5A
00:21:20
MON 11 JUN 2012
END

I am sure how or where to execute "ts_about" - what kind of command is that?

We had not swapped any hardware before the fault occurred, we have since then. At the minute we have one base station connected directly whilst we fault find.

I'm not sure if it's relevant, but I will add that when the system was first installed there were only 4 base stations, the extra three were added later (although several years ago now). It was the 3 "extra" ones which failed first....

 

[doktor]

The ELU-31 with firmware "CAA 158 0010" should be upgraded to R11A. It is currently in R9A.
Also check the s/w in the basestations by: CNBIP:BPOS=1-0-00,EXTDEV=YES; and post the result here.
ts_about is for MX-ONE.


///doktor

 

[doktor]

Using MD110 TSW SP4:
If the basestation is WORF/BS340 with s/w: CXCNB 101 108/3 then the sw level should be: R3F
If the basestation is WORF4/BS330 with s/w WORF4 GAP then the sw level should be: R4H
If the basestation is Core Base Stationwith s/w CAH/KRCNB 201/2 then the sw level should be: R2B


///doktor

 

[ceejay55]

Was actually R11B firmware but this was replaced way back in 2008 with R12A but i am sure this has nothing to do with it

Have you actually tried connecting all 6 base stations back at pabx to see if that works ok?

 

[doktor]

According to the Aastra lists of firmware it should be R11A (or R11B) for TSW SP4. However we use the R12A, I realized after a few checks.

///doktor

 

[etompau]

I doubt this problem is related to a specific FW version as the dect system has been up and running before the PBX was shut down.
The signalling to and from the bases is quit sensitive for synchronization disturbances, loss of sync. could result in base station restarts etc. Have a look at the sync. of your PBX (SCEXP).
Also what kind of LED flashing pattern do you see on LED2 of the base when connecting it to the board?

 

[doktor]

Yes!. Etompau touches a point here.
Pelase post:
ALLOP;
CXCFP:FPI=ALL;
CXRFP:FPI=ALL,RPN=ALL;
SCEXP;

Have you tried to restart the ELU31 board by -> RFBOI:BPOS=001-0-00;



///doktor