[asterisk-ss7] BIG Echo on SS7 channels.

[Jorge Antillon]

Hi,

Box1    pci:0000:03:03.0     wct4xxp+     d161:0410 Wildcard TE410P (3rd
Gen)
Box2    pci:0000:03:03.0     wanpipe-     1923:0100 Sangoma Technologies
Corp. A104d QUAD T1/E1 AFT card
Box3    pci:0000:03:03.0     wct4xxp+     d161:0410 Wildcard TE410P (2nd
Gen) (OpenVox)
Box4    pci:0000:03:03.0     wct4xxp+     d161:0410 Wildcard TE410P (2nd
Gen) (OpenVox)
Box5    pci:0000:03:03.0     wct4xxp+     d161:0410 Wildcard TE410P (2nd
Gen) (OpenVox)

Output of:

wanrouter hwprobe (for box2)

1 . AFT-A104-SH : SLOT=3 : BUS=3 : IRQ=3 : CPU=A : PORT=1 : HWEC=128 :
V=25
2 . AFT-A104-SH : SLOT=3 : BUS=3 : IRQ=3 : CPU=A : PORT=2 : HWEC=128 :
V=25
3 . AFT-A104-SH : SLOT=3 : BUS=3 : IRQ=3 : CPU=A : PORT=3 : HWEC=128 :
V=25
4 . AFT-A104-SH : SLOT=3 : BUS=3 : IRQ=3 : CPU=A : PORT=4 : HWEC=128 :
V=25

output of:

grep HWEC *
wanpipe1.conf:TDMV_HWEC	= NO
wanpipe2.conf:TDMV_HWEC	= NO
wanpipe3.conf:TDMV_HWEC	= NO
wanpipe4.conf:TDMV_HWEC	= NO


I am pretty positive there are hw echo cancel boards on box1 and box2,
but unfortunately I can't remember for sure.

I hope this is complete enough.

Thanks,

- Jorge.

On Thu, 2010-08-12 at 10:27 -0500, Kevin P. Fleming wrote:

> On 08/12/2010 04:01 AM, Jorge Antillon wrote:
> > Ok,
> > 
> > So!, here is what:
> > Went ahead and enabled:
> > echocancel => allways
> > echocan_train => 100
> > echocan_taps => 128
> > 
> > on every box, on every link.
> > 
> > Restarted asterisk (by issuing restart now) on every box and all hell
> > broke loose, calls would come in, PDD was up the roof and then this error:
> > 
> > transport.c:306 io_enable_echo_cancellation: Unable to enable echo
> > cancellation on cic 494
> > transport.c:306 io_enable_echo_cancellation: Unable to enable echo
> > cancellation on cic 586
> 
> What board are you using to connect to your E1 links, and does it have a
> hardware echo canceller?
> 
> -- 
> Kevin P. Fleming
> Digium, Inc. | Director of Software Technologies
> 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
> skype: kpfleming | jabber: kfleming at digium.com
> Check us out at www.digium.com & www.asterisk.org
> 
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