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How can we unblock a blocked dect phone (DT288) if IPEI is not known? 6

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jaylek

Technical User
Jul 29, 2002
139
OM
My DECT DT288 phone is showing BACKDOOR?
I have not taken the IPEI before. Do any body know how we can unblock this telephone?
The dect is used in MD110-BC10
Any way to get the IPEI'S from the MD for all the connected handsets?
Thanks in advance.
 
There is a back door code of 0000707402170 that free's the DT288.
I unfortunatly have a DT368 with unknown IPEI is there a magic code known for this model
 
Hi skytz,

all the DT368s I have seen have the IPEI number on a sticker on the side. Remove the battery and look at the foil sticker. The serial number is the IPEI.

 
Many Thanks this particular one is unreadable but I can narrow ir down
 
HAI SKYTZ,

It works, Many thanks.

Jaylek
 
You can use Cordless Phone Manager (CPM) to find out the IPEI of 360&368 you can also use this to change the firmware of the telephone sets.
 
I had the same issue with a 230. The backdoor code supplied by Skytz also worked for this handset!

Many thanks!!!!

 
THANX !!!!

the backdoor worked fine with my DT200 Handset too!!
 
Thanks for the info.

Another query about IPEI :
If a DECT handset that is not authorised to access a certain MD110 network attempts to subscribe, does the MD110 log that access or subscription attempt and perhaps record the IPEI number of the unauthorised handset ?
I read somewhere that there is a security feature to detect stolen phones. If this is the case, how would an administrator know that an attempt to access his network had been made unless some record is kept by the MD110.

Also, there are a lot of DECT GAP compatible base station / handset combinations available, that do not seem to need the IPEI number explicitly entered anywhere and it does not seem obvious how to get it from the handset itself, its serial number or its documentation. I think these are GAP class A systems.
Does anyone know of a way to disover it for this type of handset ?
Perhaps trying to subscribe it and reading it from an MD110 log (if it exists) would be a way. As far as I know, MD110 is GAP class B.
 
Hello, njohn343

Yes it is possible to find out the IPEI if it is not shown on the DECT phone.


First start a unit trace on CTLP:


<STUNI:UNIT=CTLP,LIM=1;
<STTSI:TRI=1;


Then try to register the dect in MD110 (unsuccessful)...



<STTSE:TRI=1;
<STRAP:TRI=1;

TRACE IND READ RESULT
TRACE INDIVIDUAL NO 1
TIME LINE(S)
.....
20.50.19.480 00009 SWSW SIGNAL GETDIRNUM (H'0041)
FROM CTLP (H'0173) EXE A IN LIM 001
TO CTLMP (H'0172) EXE A IN LIM 001
WITH 0 1 2 3 4 5 6 7 8 9
000 H'01 H'C7 H'2F H'01 H'01 H'D8 H'00 H'0C H'73 H'D8
010 H'02 H'02 H'01 H'FA H'02 H'01 H'85 H'88
20.50.19.480 00010 SWSW SIGNAL GETDIRNUMRES (H'0022)
FROM CTLMP (H'0172) EXE A IN LIM 001
TO CTLP (H'0173) EXE A IN LIM 001
WITH 0 1 2 3 4 5 6 7 8 9
000 H'01 H'C7 H'2F H'00 H'10 H'06 H'99 H'89 H'00 H'FF
010 H'FF H'FF H'02 H'00 H'0B H'06 H'02 H'00 H'02 H'8C
.....



Now look at the EMC (D04-D05) and PSN (D06-D09),
convert EMC to 5 decimal digits and then
PSN to 7 decimal digits and then and try to add the 13:th
checksum digit:


<CXAKI:DIR=541,AUTKEY=01234567,IPEI=0047208160881;
NOT ACCEPTED
IPEI
NOT IN RANGE
<CXAKI:DIR=541,AUTKEY=01234567,IPEI=0047208160882;
NOT ACCEPTED
IPEI
NOT IN RANGE
....


<CXAKI:DIR=541,AUTKEY=01234567,IPEI=0047208160880;
EXECUTED

Now register the dect successfully.

Done!!


Regards
MDatHome

 
hello MDatHome,
I can't wait to try this out! I'll be a bit busy at work early in the week but will let you know the result.
Thanks for your reply.
regards,
John.

 
To UTS1111
your DT570 unlock problem was discussed in the following thread :

thread806-533290 are some suggestions there, but I think the DT570 is more difficult to unlock than the other Ericssons.

Good Luck.
 
Thanks njohn343!

I read the Thread806-533290 there is no help,

is there anyone unlocked PIN CODE for DT570?
 
Hi all
I find a small correction to problem “How to find IPEI number using ST function” .
I has today a problem with IPEI for DT570 system is BC 12.1 (sp4) 9 LIMs
I trialed method with signal tracing. / I know this method and it work correct on my test lim /

[tt]
<STUNI:UNIT=CTLP,LIM=1;

YOUR TRACE INDIVIDUAL IS 2
EXECUTED

<STTSI:TRI=2;
EXECUTED

*** DT subscribing faulty***

<STTSE:TRI=2;
EXECUTED

<STRAP:TRI=2;

TRACE IND READ RESULT
TRACE INDIVIDUAL NO 2
NO SIGNALS FOUND
END
[/tt]
In fact program CTLP is loaded to all lims and generic extension are initiated in lims 5&4&9 and mobility system (base station in this same lim’s)
But I need data from
<STRAP:TRI=x…
…….SWSW SIGNAL GETDIRNUM (H'0041)

My solution

<CNPIP:UNIT=CTLMP;;
[tt
PROGRAM UNIT INFORMATION
PU-NAME PU-NO PRODUCT NUMBER REV PATCH
CTLMP H'172 5/CAA 111 9558/01 R1A NO
TYPE
B'0000 0000 0000 0000 0000 1000 0000 0000
TYPEEXT
B'0000 0000 0000 0000 0010 0001 0000 0011
LOADED IN LIM
4 8
ACTIVE CF LOCATED IN LIM 8
[/tt]

Program CTLMP is loaded in two lims but active in lim 8

Than
<STSII :LIMR=8,UNITR=CTLMP,SIGNAM=GETDIRNUM;
LIMR= 8 because CTLMP program is active in LIM 8
The rest is this same as MDatHome wrote
And the STRAP is very short (only 4 records )

The last digit in IPEI can be 0…9 or * (star)
[/color red]
 
Hi Dears

I have a locked telephone DT590 when I switch it on IT needs an IPEI but unfortunatily I do not have?

What shuld I do??


Thanks
 
Use the Cordless Phone Manager + a programming cable and then read out the "End user PIN".
 
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