asterisk users - Dec 2003 - Erratic DTMF on E1/PRI (continuation of Strage bip on ISDN/PRI)

Paulo Mannheimer wrote:
> At the same site, DTMF recognition is functioning badly, sometimes
> duplicating digits and sometimes totally missing others.
> 
> We have checked already /proc/interrups, there is no interrupt being
> shared.
> 
FWIW right now this problem is the most vexing one we're facing, 
actually eclipsing the "SIP behind NAT" deal as the one generating the
most complaints from our users.

My guess is in our heavily-used installations somewhere on the order of 
one call in ten (we're using fairly nice AT&T instruments) is either 
dropping DTMF digits or doubling them, and both are perceived as equally 
serious to the user, especially in those cases where the difference 
causes unintended consequences by matching a different element in the 
dialplan.

Thx.

B.

Happens quite a lot if you have synch problems with the other side. try
checking the clocking of your E1 part.

On Tue, 2003-12-09 at 21:06, Paulo Mannheimer wrote:
> At the same site, DTMF recognition is functioning badly, sometimes
> duplicating digits and sometimes totally missing others.
> 
> We have checked already /proc/interrups, there is no interrupt being
> shared.
> 
> Our zaptel has .. span=1,1,0,ccs,hdb3
> 
> On zapata we have ...
> switchtype=euroisdn
> signalling=pri_cpe
> relaxdtmf=no (yes doesn't seem to help)
> 
> -----Original Message-----
> From: asterisk-users-admin@lists.digium.com
> [mailto:asterisk-users-admin@lists.digium.com] On Behalf Of Paulo
> Mannheimer
> Sent: ter?a-feira, 9 de dezembro de 2003 16:33
> To: asterisk-users@lists.digium.com
> Subject: RE: [Asterisk-Users] Strage bip on ISDN/PRI
> 
> 
> Sorry for the short post - I haven't included additional info because
it
> seemed irrelevant to the issue, mainly because we have already gone
> through extensive trial and error.
> 
> We are using RH 7.2, testing with a cvs of 2 month ago and a fresh one
> downloaded yesterday. The noise doesn't seem to follow any pattern, it
> shows up once in a while. I was wondering if this can be a spill-off
> from music on hold (mpg123).
> 
> Best regards,
> 
> PHM
> 
> -----Original Message-----
> From: asterisk-users-admin@lists.digium.com
> [mailto:asterisk-users-admin@lists.digium.com] On Behalf Of Steven
> Critchfield
> Sent: ter?a-feira, 9 de dezembro de 2003 13:40
> To: asterisk-users@lists.digium.com
> Subject: Re: [Asterisk-Users] Strage bip on ISDN/PRI
> 
> 
> On Tue, 2003-12-09 at 11:20, Paulo Mannheimer wrote:
> > Hi All,
> > 
> > We are just starting to deploy a new PRI IVR system, and the incoming
> > calls sometimes get random short 'bips' while navigating our
IVR menu.
> 
> > Any hint on what this can be?
> 
> Do they occur during changes in prompts or during single recorded
> prompts? What revision of software are you using? What distro and
> version are you on? 
> 
> Please provide lots of data when asking questions as it helps those who
> would answer your question. It is easier to weed through information
> overload than to send several messages asking for more information.

At the same site, DTMF recognition is functioning badly, sometimes
duplicating digits and sometimes totally missing others.

We have checked already /proc/interrups, there is no interrupt being
shared.

Our zaptel has .. span=1,1,0,ccs,hdb3

On zapata we have ...
switchtype=euroisdn
signalling=pri_cpe
relaxdtmf=no (yes doesn't seem to help)

-----Original Message-----
From: asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] On Behalf Of Paulo
Mannheimer
Sent: ter?a-feira, 9 de dezembro de 2003 16:33
To: asterisk-users@lists.digium.com
Subject: RE: [Asterisk-Users] Strage bip on ISDN/PRI


Sorry for the short post - I haven't included additional info because it
seemed irrelevant to the issue, mainly because we have already gone
through extensive trial and error.

We are using RH 7.2, testing with a cvs of 2 month ago and a fresh one
downloaded yesterday. The noise doesn't seem to follow any pattern, it
shows up once in a while. I was wondering if this can be a spill-off
from music on hold (mpg123).

Best regards,

PHM

-----Original Message-----
From: asterisk-users-admin@lists.digium.com
[mailto:asterisk-users-admin@lists.digium.com] On Behalf Of Steven
Critchfield
Sent: ter?a-feira, 9 de dezembro de 2003 13:40
To: asterisk-users@lists.digium.com
Subject: Re: [Asterisk-Users] Strage bip on ISDN/PRI


On Tue, 2003-12-09 at 11:20, Paulo Mannheimer wrote:
> Hi All,
> 
> We are just starting to deploy a new PRI IVR system, and the incoming
> calls sometimes get random short 'bips' while navigating our IVR
menu.
> Any hint on what this can be?
Do they occur during changes in prompts or during single recorded
prompts? What revision of software are you using? What distro and
version are you on? 

Please provide lots of data when asking questions as it helps those who
would answer your question. It is easier to weed through information
overload than to send several messages asking for more information.
-- 
Steven Critchfield  <critch@basesys.com>

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