D Channel keeps resetting but no alarms

[Mazda88]

Hi,
We have a problem with our DCH resetting on our E1 PRI circuit. I have done a lcnt and there are no alarms appearing.
DCH: 7 RLS NO RESPONSE TIME: 10:03:04 10/10/2011
DCH: 7 EST CONFIRM TIME: 10:03:10 10/10/2011
DCH: 7 RLS NO RESPONSE TIME: 10:09:34 10/10/2011
DCH: 7 EST CONFIRM TIME: 10:09:38 10/10/2011
DCH: 7 RLS NO RESPONSE TIME: 10:11:52 10/10/2011
DCH: 7 EST CONFIRM TIME: 10:11:58 10/10/2011

lcnt
PRI2 TRK LOOP 2
MNT NNDC NNC OOS
BPV- 000 000 000 000
FAP- 000 000 000 000
SLP- 000 000 000 000
CRC- 000 000 000 000
G2 - 000 000 000 000
MAINT NONEWCALL UNAVAIL SEVERE
TOTAL 24HR BPV - 000000000 000000000 000000000 000000000
TOTAL 24HR CRC - 000000000 000000000 000000000 000000000
TOTAL 24HR FAP - 000000000 000000000 000000000 000000000
TOTAL 24HR SLPREP - 000000000
TOTAL 24HR SLPDEL - 000000000
TOTAL 24 HOUR G2 AIS -000000000
TOTAL 24 HOUR G2 LFAS -000000000
TOTAL 24 HOUR G2 LMAS -000000000
TOTAL 24 HOUR G2 RAI -000000000
TOTAL 24 HOUR G2 LOS -000000000
TOTAL 24 HOUR G2 RAIE -000000000

I thought that it was the DCH daughter card and so I ended up swapping out the PRI card with a new DCH and clock controller card and the exact same DCH problems appeared. It just keeps resetting .

I have also disabled the DCH and did a force download to the DCH thinking that this would clear the error. Still the same problem.

Here is the programming for our DCH
ADAN DCH 7
CTYP MSDL
CARD 02
PORT 1
DES HFCL_ISDN_PRI
USR PRI
DCHL 2
OTBF 32
PARM RS422 DTE
DRAT 64KC
CLOK EXT
IFC EURO
CNTY ETSI
PINX_CUST 0
ISDN_MCNT 300
CLID OPT1
PROG NCHG
CO_TYPE STD
SIDE USR
CNEG 1
RLS ID **
RCAP COLP
MBGA NO
OVLR NO
OVLS NO
T310 120
INC_T306 0
OUT_T306 0
T200 3
T203 10
N200 3
N201 260
K 7

Here is config parameters on MSDL DCH 7
pcon dch 7
DCH: 7 LINK PARAM CONFIRM TIME: 9:43:24
MSDL : 7
PORT : 1
INTERFACE : ****(00000011 )
OPER MODE : RS422/DTE/USR/64000/EXT CLK
T200 : 3
T203 : 10
CREF LENGTH : 2
EARLY NR CHECK : NO
SHORT HDR ERR : YES
IMMEDIATE ACK : NO
MAX B-CHNL : 31
INI CLR CALL : U25 U19 U17 U15 U12 U11 U9 U6 U3 U2 U1
RLS CLR CALL : U25 U19 U17 U15 U12 U11 U9 U8 U7 U6 U4 U3 U2 U1
INI TMREXP : 64
T310 : 120
TABLE ID : 132 (ETSI)
N200 : 3
N201 : 260
K : 7
ISDN MCNT: 300

Here is the PLOG of DCH 7

plog dch 7

DCH: 7 MAINT CONFIRM TIME: 9:02:32
COUNTER VALUE
2 12
3 161
6 31
10 3
11 2
18 3
20 4
25 11

Any help would be greatly appreciated,
Mazda88

 

[RickyPone]

Could be the cable from the switch to the csu.

 

[trvlr1]

If the telco hardware resets, it will also reset yours, resulting in the circuit bouncing. Have you had the Telco check out their equipment? If it is their receive that is causing the issues, you would not see errors on your end.

 

[Mazda88]

Thanks everyone. The telco is stopping by to analyze their lines. Hopefully they find something this time around. They came two weeks ago and said that their tests ran clean and that it was our equipment. I changed out our DCH and PRI with the exact same issue of the DCH bouncing up and down. I told them our hardware was good.

They just mentioned to me in passing that they applied a patch in July and I told them that was when our issues started. They told me we were the only customers to complain.

Their CO switch type is Q.SIG(Q.931) Huawei NGN SoftX3000.

Mazda88

 

[NZNewbie]

Of COURSE you are the only customer to complain..... It is because it is NOT thier problem and NOT caused by thier equipment .... you ask them they will tell you....

TELCOs are the same all the world over......