[asterisk-ss7] Echo and Noise problems with chan_ss7

Wed Jun 12 02:33:58 CDT 2013

Hi Everybody!

I have some problems with echo and noises during calls. I played a bit with
echo_train and echo_taps but no change.

Have someone similar problems?

Here is my setup:

Chan_ss7 2.1.0

Asterisk 1.8.9.3

Dahdi 2.6.0

Sangoma A104 (No HWEC)

Wanpipe 3.5.25

ss7.conf:

[linkset-siuc]

enable_st => no

use_connect => no

hunting_policy => even_mru

context => custom

language => de

t35 => 3500,st

subservice => auto

variant => ITU

[link-l1]

linkset => siuc

channels => 2-31

schannel => 1

firstcic => 1

enabled => yes

sltm => no

sls=0

echocancel => allways

echocan_train => 10

echocan_taps => 128

[link-l2]

linkset => siuc

channels => 1-31

schannel =>

firstcic => 33

enabled => yes

sltm => no

sls=0

echocancel => allways

echocan_train => 10

echocan_taps => 128

[link-l3]

linkset => siuc

channels => 1-31

schannel =>

firstcic => 65

enabled => yes

sltm => no

sls=0

echocancel => allways

echocan_train => 10

echocan_taps => 128

[link-l4]

linkset => siuc

channels => 1-31

schannel =>

firstcic => 97

enabled => yes

sltm => no

sls=0

echocancel => allways

echocan_train => 10

echocan_taps => 128

[host-SS7-1]

;if-1 => 10.1.40.71

enabled => yes

opc => 1601

dpc => siuc:300

links => l1:1,l2:2,l3:3,l4:4                    ;span 1 of dahdi/system.conf

;globaltitle => 0x00, 0x03, 0x01, 7773

ssn => 7

chan_dahdi.conf:

;autogenerated by /usr/sbin/wancfg_dahdi do not hand edit

;autogenrated on 2009-03-18

;Dahdi Channels Configurations

;For detailed Dahdi options, view /etc/asterisk/chan_dahdi.conf.bak

[trunkgroups]

[channels]

context=default

usecallerid=yes

hidecallerid=no

callwaiting=yes

usecallingpres=yes

callwaitingcallerid=yes

threewaycalling=yes

transfer=yes

canpark=yes

cancallforward=yes

callreturn=yes

echocancel=yes

echocancelwhenbridged=yes

relaxdtmf=yes

rxgain=8

txgain=-3

group=1

callgroup=1

pickupgroup=1

immediate=no

toneduration=50

dahdi systems.conf:
#autogenerated by /usr/sbin/wancfg_dahdi do not hand edit
#autogenrated on 2009-07-23
#Dahdi Channels Configurations
#For detailed Dahdi options, view /etc/dahdi/system.conf.bak
loadzone=de
defaultzone=de

#Sangoma A104 port 1 [slot:3 bus:13 span:1] <wanpipe1>
span=1,1,0,ccs,hdb3,crc4
bchan=2-31
mtp2=1
echocanceller=mg2,2-31
txgain=-3
rxgain=8

#Sangoma A104 port 2 [slot:3 bus:13 span:2] <wanpipe2>
span=2,1,0,ccs,hdb3,crc4
bchan=32-63
echocanceller=mg2,32-63
txgain=-3
rxgain=8

#Sangoma A104 port 3 [slot:3 bus:13 span:3] <wanpipe3>
span=3,1,0,ccs,hdb3,crc4
bchan=64-95
echocanceller=mg2,64-95
txgain=-3
rxgain=8

#Sangoma A104 port 4 [slot:3 bus:13 span:4] <wanpipe4>
span=4,1,0,ccs,hdb3,crc4
bchan=96-124
echocanceller=mg2,96-124
txgain=-3
rxgain=8

wanpipe1.conf:
#================================================
# WANPIPE1 Configuration File
#================================================
#
# Date: Wed Dec  6 20:29:03 UTC 2006
#
# Note: This file was generated automatically
#       by /usr/local/sbin/setup-sangoma program.
#
#       If you want to edit this file, it is
#       recommended that you use wancfg program
#       to do so.
#================================================
# Sangoma Technologies Inc.
#================================================

[devices]
wanpipe1 = WAN_AFT_TE1, Comment

[interfaces]
w1g1 = wanpipe1, , TDM_VOICE, Comment

[wanpipe1]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 3
PCIBUS   = 13
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = CRC4
FE_LINE = 1
TE_CLOCK = NORMAL
TE_REF_CLOCK    = 1 # alt 0
TE_SIG_MODE     = CCS
TE_HIGHIMPEDANCE = NO

LBO = 120OH
FE_TXTRISTATE = NO
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 1
TDMV_DCHAN = 16
TDMV_HW_DTMF = YES
TDMV_HW_FAX_DETECT = NO
[w1g1]
ACTIVE_CH = ALL
TDMV_HWEC = NO

wanpipe2.conf:
#================================================
# WANPIPE1 Configuration File
#================================================
#
# Date: Wed Dec  6 20:29:03 UTC 2006
#
# Note: This file was generated automatically
#       by /usr/local/sbin/setup-sangoma program.
#
#       If you want to edit this file, it is
#       recommended that you use wancfg program
#       to do so.
#================================================
# Sangoma Technologies Inc.
#================================================

[devices]
wanpipe2 = WAN_AFT_TE1, Comment

[interfaces]
w2g1 = wanpipe2, , TDM_VOICE, Comment

[wanpipe2]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 3
PCIBUS   = 13
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = CRC4
FE_LINE = 2
TE_CLOCK = NORMAL # ALT NORMAL
TE_REF_CLOCK    = 1 # ALT 0

TE_SIG_MODE     = CCS
TE_HIGHIMPEDANCE = NO

LBO = 120OH
FE_TXTRISTATE = NO
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 2
TDMV_DCHAN = 16
TDMV_HW_DTMF = NO
TDMV_HW_FAX_DETECT = NO

[w2g1]
ACTIVE_CH = ALL
TDMV_HWEC = NO

wanpipe3.conf:
#================================================
# WANPIPE1 Configuration File
#================================================
#
# Date: Wed Dec  6 20:29:03 UTC 2006
#
# Note: This file was generated automatically
#       by /usr/local/sbin/setup-sangoma program.
#
#       If you want to edit this file, it is
#       recommended that you use wancfg program
#       to do so.
#================================================
# Sangoma Technologies Inc.
#================================================

[devices]
wanpipe3 = WAN_AFT_TE1, Comment

[interfaces]
w3g1 = wanpipe3, , TDM_VOICE, Comment

[wanpipe3]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 3
PCIBUS   = 13
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = CRC4
FE_LINE = 3
TE_CLOCK = NORMAL # ALT NORMAL
TE_REF_CLOCK    = 1 # alt 0
TE_SIG_MODE     = CCS
TE_HIGHIMPEDANCE = NO

LBO = 120OH
FE_TXTRISTATE = NO
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 3
TDMV_DCHAN = 16
TDMV_HW_DTMF = NO
TDMV_HW_FAX_DETECT = NO

[w3g1]
ACTIVE_CH = ALL
TDMV_HWEC = NO

wanpipe4.conf:
#================================================
# WANPIPE1 Configuration File
#================================================
#
# Date: Wed Dec  6 20:29:03 UTC 2006
#
# Note: This file was generated automatically
#       by /usr/local/sbin/setup-sangoma program.
#
#       If you want to edit this file, it is
#       recommended that you use wancfg program
#       to do so.
#================================================
# Sangoma Technologies Inc.
#================================================

[devices]
wanpipe4 = WAN_AFT_TE1, Comment

[interfaces]
w4g1 = wanpipe4, , TDM_VOICE, Comment

[wanpipe4]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 3
PCIBUS   = 13
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = CRC4
FE_LINE = 4
TE_CLOCK = NORMAL # ALT NORMAL
TE_REF_CLOCK    = 1 # ALT 0
TE_SIG_MODE     = CCS
TE_HIGHIMPEDANCE = NO

LBO = 120OH
FE_TXTRISTATE = NO
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 4
TDMV_DCHAN = 16
TDMV_HW_DTMF = NO
TDMV_HW_FAX_DETECT = NO

[w4g1]
ACTIVE_CH = ALL
TDMV_HWEC = NO
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