Добрый день.

Система Elastix. НЕ виртуалка.

Установлена плата PCIe 16 FXO.

При звонках в город постоянные прерывания голоса на стороне города... По симптомам похоже на отсутствие синхронизации.

# uname -a
Linux localhost 2.6.18-348.1.1.el5 #1 SMP Tue Jan 22 16:24:03 EST 2013 i686 athlon i386 GNU/Linux

# lsmod | grep dahdi
dahdi_voicebus         53408  1 wctdm24xxp
dahdi                 214460  36 wctdm24xxp,dahdi_voicebus
crc_ccitt               6337  2 wctdm24xxp,dahdi

# asterisk -rx 'dahdi show status'
Description                              Alarms  IRQ    bpviol CRC    Fra Codi Options  LBO
Wildcard TDM2400P                        OK      0      0      0      CAS Unk           0 db (CSU)/0-133 feet (DSX-1)

Далее проделал "почти" все как в топике

http://asterisk-support.ru/question/37856/preryvanie-pri-vosproizvedenii-zvukov-elastix/

только не убрал автозагрузку wctdm24xxp, так как если ее убрать, то dahdi не грузится автоматом...

в результате:

# lsmod | grep dahdi
dahdi_dummy             9252  0 
dahdi_voicebus         53408  1 wctdm24xxp
dahdi                 214460  49 dahdi_dummy,wctdm24xxp,dahdi_voicebus
crc_ccitt               6337  2 wctdm24xxp,dahdi

# asterisk -rx 'dahdi show status'
Description                              Alarms  IRQ    bpviol CRC    Fra Codi Options  LBO
Wildcard TDM2400P                        OK      0      0      0      CAS Unk           0 db (CSU)/0-133 feet (DSX-1)
DAHDI_DUMMY/1 (source: Linux26) 1        UNCONFI 0      0      0      CAS Unk           0 db (CSU)/0-133 feet (DSX-1)

но после этого у меня отвалился oslec:

# dahdi_cfg -vvv
DAHDI Tools Version - 2.8.0

DAHDI Version: 2.9.1.1
Echo Canceller(s): 
Configuration
======================


Channel map:

Channel 01: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 01)
Channel 02: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 02)
Channel 03: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 03)
Channel 04: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 04)
Channel 05: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 05)
Channel 06: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 06)
Channel 07: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 07)
Channel 08: FXS Kewlstart (Default) (Echo Canceler: oslec) (Slaves: 08)
Channel 09: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 09)
Channel 10: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 10)
Channel 11: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 11)
Channel 12: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 12)
Channel 13: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 13)
Channel 14: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 14)
Channel 15: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 15)
Channel 16: FXS Kewlstart (Default) (Echo Canceler: none) (Slaves: 16)

16 channels to configure.

Setting echocan for channel 1 to oslec
DAHDI_ATTACH_ECHOCAN failed on channel 1: Invalid argument (22)


# dmesg |grep dahdi
dahdi: Version: 2.9.1.1
dahdi: Telephony Interface Registered on major 196
dahdi_devices pci:0000:03:00.0: local span 1 is already assigned span 1
dahdi_echocan_oslec: disagrees about version of symbol dahdi_register_echocan_factory
dahdi_echocan_oslec: Unknown symbol dahdi_register_echocan_factory
dahdi_echocan_oslec: disagrees about version of symbol dahdi_unregister_echocan_factory
dahdi_echocan_oslec: Unknown symbol dahdi_unregister_echocan_factory

# dahdi_test
Opened pseudo dahdi interface, measuring accuracy...
99.801% 99.991% 99.896% 99.809% 99.800% 99.995% 100.000% 100.000% 
99.950% 99.999% 99.608% 99.612% 99.965% 99.965% 99.803% 99.999% 
99.899% 99.990% 99.907% 99.800% 99.907% 99.995% 99.907% 99.997% 
100.000% 99.950% 99.999% 99.999% 99.999% 99.997% 99.999% 99.708% 
--- Results after 32 passes ---
Best: 100.000% -- Worst: 99.608% -- Average: 99.913939%
Cummulative Accuracy (not per pass): 99.989

В общем проблему не решил, еще и ослек поломал )))

Хотелось бы помощи:

1. Восстановить ослек

2. Всетаки решить проблему с синхронизацией