[cisco-voip] Troubleshooting echo T1 CAS E&M

[Kris Seraphine]

Sure, the nework-clock-participate and network-clock-select commands do what
the tdm clock commands did for the 1760's and MRPs.

they are supported on 2800's with a VWIC-MFT card.

On 2/1/06, Jose Robles <jose.robles at netxar.com> wrote:
>
>  Hello Kris. Are this commands supported in 2800 routers? I know they are
> in the 1760 routers with the tdm clock etc…
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> -----Original Message-----
> *From:* Kris Seraphine [mailto:baryonyx5 at gmail.com]
> *Sent:* Tuesday, January 31, 2006 9:50 PM
> *To:* Jose Robles
> *Subject:* Re: [cisco-voip] Troubleshooting echo T1 CAS E&M
>
>
>
> the first thing you should do is verify the clocking is configured
> correctly for the T1 controller.  The network-clock-select and
> network-clock-participate commands need to be configured correctly.
>
> You can also try tuning the input gain and output attenuation.  I usually
> start small by setting the input gain to -1 and output attenuation to 1.
>
>  On 1/31/06, *Jose Robles* <jose.robles at netxar.com> wrote:
>
> We have a 2811 router with a T1 CAS E&M wink to the PSTN. People are
> complaining they hear echo when they make a call(they hear themselves). I
> played with the echo-cancel coverage command, the echo suppressor and the
> echo-cancel erl worst-case commands using all existing and imaginable
> values. I've read of the thl tone sweep tool to calculate the impedance
> setting in the line but this tool doesn't work with T1. Ill need a hardware
> for echo cancellation? I'm sending part of a show call active voice:
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> GENERIC:
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> SetupTime=1543321430 ms
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> Index=1
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> PeerAddress=17878611407
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> PeerSubAddress=
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> PeerId=1
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> PeerIfIndex=36
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> LogicalIfIndex=35
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> ConnectTime=1543334890 ms
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> CallDuration=00:01:11 sec
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> CallState=4
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> CallOrigin=1
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> ChargedUnits=0
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> InfoType=speech
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> TransmitPackets=4124
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> TransmitBytes=692832
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> ReceivePackets=4268
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> ReceiveBytes=682880
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> TELE:
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> ConnectionId=[0x61053E4A 0x8EA011DA 0xA5E79004 0x1FF0B5C6]
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> IncomingConnectionId=[0x61053E4A 0x8EA011DA 0xA5E79004 0x1FF0B5C6]
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> CallID=24620
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> TxDuration=85350 ms
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> VoiceTxDuration=85350 ms
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> FaxTxDuration=0 ms
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> CoderTypeRate=g711ulaw
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> NoiseLevel=-40
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> ACOMLevel=15
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> OutSignalLevel=-67
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> InSignalLevel=-6
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> InfoActivity=1
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> ERLLevel=15
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> EchoCancellerMaxReflector=9
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> SessionTarget=
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> ImgPages=0
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> CallerName=
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> CallerIDBlocked=False
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> OriginalCallingNumber=
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> OriginalCallingOctet=0x0
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> OriginalCalledNumber=
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> OriginalCalledOctet=0x0
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> OriginalRedirectCalledNumber=
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> OriginalRedirectCalledOctet=0x0
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> TranslatedCallingNumber=
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> TranslatedCallingOctet=0x0
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> TranslatedCalledNumber=17878611407
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> TranslatedCalledOctet=0x0
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> TranslatedRedirectCalledNumber=
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> TranslatedRedirectCalledOctet=0x0
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> GwOutpulsedCalledNumber=17878611407
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> GwOutpulsedCalledOctet3=0x0
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> DSPIdentifier=0/1:1
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> Jose A. Robles
> Sr. Network Consultant
> CCNP, CCDP
> CQS Routing and Lan Switching Specialist
> Netxar Technologies, Inc. - www.netxar.com
> 17 Ponce Street
> San Juan, PR 00917
> ph:  +1 787 765 0058  x2015
> fax: +1 787 756 5362
> cel: +1 787 547-0149
> email jose.robles at netxar.com
>
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> _______________________________________________
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>
>
>
>
> --
> kris seraphine
>



--
kris seraphine
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