asterisk users - May 2011 - kernel: dahdi: Master changed to B4/0/x

Hi,

I did replace an old asterisk box by a new shiny one (2 BRI ports used
on a quad port card - BeroNet PCI Express)

I noticed a message in the logs that puzzles me:

May 11 19:10:02  kernel: dahdi: Master changed to B4/0/1
May 11 19:10:08  kernel: wcb4xxp 0000:05:04.0: PCI INT A disabled
May 11 19:10:08  kernel: wcb4xxp 0000:05:04.0: Driver unloaded.
May 11 19:10:08  kernel: dahdi: Telephony Interface Unloaded
May 11 19:10:09  kernel: dahdi: Telephony Interface Registered on major 196
May 11 19:10:09  kernel: dahdi: Version: 2.3.0.1
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: probe called for b4xx...
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: PCI INT A -> GSI 32 (level,
low) -> IRQ 32
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: Identified BeroNet BN4S0
(controller rev 1) at 000000000001bc00, IRQ 32
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: NOTE: hardware echo cancellation
has been disabled
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: Port 1: TE mode
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: Port 2: TE mode
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: Port 3: TE mode
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: Port 4: TE mode
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: Did not do the highestorder stuff
May 11 19:10:09  kernel: dahdi_echocan_oslec: Registered echo canceler
'OSLEC'
May 11 19:10:09  kernel: dahdi: Registered tone zone 2 (France)
May 11 19:10:09  kernel: wcb4xxp 0000:05:04.0: new card sync source: port 1

May 11 19:10:30  kernel: dahdi: Master changed to B4/0/2
May 11 19:10:36  kernel: dahdi: Master changed to B4/0/1
May 11 19:10:56  kernel: dahdi: Master changed to B4/0/2
May 11 19:11:02  kernel: dahdi: Master changed to B4/0/1
May 11 19:11:12  kernel: dahdi: Master changed to B4/0/2
May 11 19:12:07  kernel: dahdi: Master changed to B4/0/1
May 11 19:12:17  kernel: dahdi: Master changed to B4/0/2
May 11 19:12:19  kernel: dahdi: Master changed to B4/0/1
May 11 19:12:40  kernel: dahdi: Master changed to B4/0/2
May 11 19:12:42  kernel: dahdi: Master changed to B4/0/1

When those messages appear a RED alarm is triggered on the corresponding
span.



Hardware:
05:04.0 ISDN controller: Cologne Chip Designs GmbH ISDN network
Controller [HFC-4S] (rev 01)

Modules:
dahdi_echocan_oslec     1386  8 
echo                    3354  1 dahdi_echocan_oslec
wcb4xxp                74747  6 
dahdi                 193086  14 dahdi_echocan_oslec,wcb4xxp

version:        2.3.0.1
alias:          dahdi_dummy


asterisk version:
Asterisk 1.6.2.9-2, Copyright (C) 1999 - 2010 Digium, Inc. and others.

Channel dumps:
May 11 19:18:19 kernel: dahdi: Dump of DAHDI Channel 1 (B4/0/1/1,1,1):
May 11 19:18:19 kernel:
May 11 19:18:19 kernel: dahdi: flags: 501 hex, writechunk: ffff88013b74008c,
readchunk: ffff88013b7400a4
May 11 19:18:19 kernel: dahdi: rxgain: ffffffffa0276170, txgain:
ffffffffa0276170, gainalloc: 0
May 11 19:18:19 kernel: dahdi: span: ffff88013b740128, sig: 80 hex, sigcap:
10080 hex
May 11 19:18:19 kernel: dahdi: inreadbuf: -1, outreadbuf: 0, inwritebuf: 0,
outwritebuf: -1
May 11 19:18:19 kernel: dahdi: blocksize: 160, numbufs: 4, txbufpolicy: 0,
txbufpolicy: 0
May 11 19:18:19 kernel: dahdi: txdisable: 0, rxdisable: 0, iomask: 0
May 11 19:18:19 kernel: dahdi: curzone: ffff88013cce0000, tonezone: 2, curtone:
(null), tonep: 0
May 11 19:18:19 kernel: dahdi: digitmode: 0, txdialbuf: , dialing: 0,
aftdialtimer: 0, cadpos. 0
May 11 19:18:19 kernel: dahdi: confna: 0, confn: 0, confmode: 0, confmute: 0
May 11 19:18:19 kernel: dahdi: ec: (null), deflaw: 0, xlaw: ffffffffa0257d50
May 11 19:18:19 kernel: dahdi: itimer: 0, otimer: 0, ringdebtimer: 0
May 11 19:18:19 kernel:
May 11 19:18:21 kernel: dahdi: Dump of DAHDI Channel 2 (B4/0/1/2,2,2):
May 11 19:18:21 kernel:
May 11 19:18:21 kernel: dahdi: flags: 501 hex, writechunk: ffff88013b740094,
readchunk: ffff88013b7400ac
May 11 19:18:21 kernel: dahdi: rxgain: ffffffffa0276170, txgain:
ffffffffa0276170, gainalloc: 0
May 11 19:18:21 kernel: dahdi: span: ffff88013b740128, sig: 80 hex, sigcap:
10080 hex
May 11 19:18:21 kernel: dahdi: inreadbuf: -1, outreadbuf: 0, inwritebuf: 0,
outwritebuf: -1
May 11 19:18:21 kernel: dahdi: blocksize: 160, numbufs: 4, txbufpolicy: 0,
txbufpolicy: 0
May 11 19:18:21 kernel: dahdi: txdisable: 0, rxdisable: 0, iomask: 0
May 11 19:18:21 kernel: dahdi: curzone: ffff88013cce0000, tonezone: 2, curtone:
(null), tonep: 0
May 11 19:18:21 kernel: dahdi: digitmode: 0, txdialbuf: , dialing: 0,
aftdialtimer: 0, cadpos. 0
May 11 19:18:21 kernel: dahdi: confna: 0, confn: 0, confmode: 0, confmute: 0
May 11 19:18:21 kernel: dahdi: ec: (null), deflaw: 0, xlaw: ffffffffa0257d50
May 11 19:18:21 kernel: dahdi: itimer: 0, otimer: 0, ringdebtimer: 0


Do you guys have a clue about it ?

Thanks