[asterisk-ss7] BIG Echo on SS7 channels.

[Jorge Antillon]

Hi,

So, tricky now, /etc/system/system.conf, if I remember correctly,
enabling echo cancellation there (mg2) creates a huge load on the system
when using chan_ss7, is that not true?.
If so, how would I go about enabling the hw echo cancelers on box 1 and
2, and software echo on box 3, 4, 5 without breaking the system.

Regards.

    - Jorge.


On Fri, 2010-08-13 at 11:10 -0500, Kevin P. Fleming wrote:

> On 08/12/2010 11:51 AM, Jorge Antillon wrote:
> > 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.
> 
> If you don't have hardware echo cancellers, and you don't define a
> software echo canceller in /etc/dahdi/system.conf, then it's completely
> logical that asking the channel driver to enable echo cancellation will
> result in an error message... there's nothing to enable.
> 
> Either ensure all your boards have hardware echo cancellers and they are
> not disabled, or enable a software 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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