BP250 : 1. VMU-HD caused errors and must be restarted; 2. max. number of dect base station in system

[nitram11]

Hello,.

we have an old BP 250 System, which normally worked fine; PRM. is 18,

1.

now for a long period the VMU-HD caused Errors (see images maintance logs below) and then need to be restarted after 3-4 days of working stable; it seems to me, that the CPUD-5 recognize the fail funktion,try to restart the modul and failed/ or lost connection; so i have to shutdown/restart the modul manually over BMS and the it works again, but producing errors (same type) immidiatly; after a time there comes buffer oveflow..

any idear, what caused these type of error, or what to check ? ; i had to say, that i have no experiences of doing traces in the system, but would try it, if not to difficult.

or does this point, that the modul had a malfunktion and i should better swap it; have some (used) other moduls there..; i remember, that only eproms and store medium have to be changed to new modul, is that right?

2. annoter question: what is maximum of base dect station in sxstem; we have 3 ICLUs and 20 Bas stations (with power from backplane) at this time; can this be enlarged, when working with local power

Thanks for any advice in advance.

 

[xs650]

1*ICCU-2 + 3*ICLU=28 base stations
Max bases are 60 with 1 ICCU-2 and 7 ICLU

The card restart appears at system check time in the night.
If they are working at night I would first change the VMU memory card or try to format it.

 

[nitram11]

Hello, xs650

thank you first for answering;

for my second question i have found a old hint from a erisson tech; there seems to be a limitation of 16-17 Base Stations by max. current of the backplane; (i was wrong with 20, we have only 16 active bases at this time); when 1 now try to sighn one more base station, it fail; so the only workarround to get more bases seems, to serve them with local power; i will try this.

to VMU-HD: what do you mean with "..if they are working at night.."; our BP is on, but no one is working in the night; i thougt , that only some maintanance jobs are going there;
If the mememory card caused the errors: is ist possible, to copy all our personal announcements and personal VMs to a new card ? Or is it possible, to copy this back after formating the card ?

for me i had suggested, that the modul sometimes failed, not the memory card ?

Thanks a lot and greetings from Germany