Title: [Asterisk-Users] Help! Problems talking to upstream switch
This helps alot!  I believe that it is an ADIT 600, and I definitely want to adjust those gain settings. I'll ask Martin about the timeout on DNIS, although it would seem that the fact that I have observed the loss of only the 2nd tone, for example, leads me to believe that it is not the timing out. 
 
Thanks,
Andy Hester
Consero
 
-----Original Message-----
From: Tim McQueen [mailto:[EMAIL PROTECTED]On Behalf Of [EMAIL PROTECTED]
Sent: Sunday, June 29, 2003 10:11 PM
To: [EMAIL PROTECTED]
Subject: RE: [Asterisk-Users] Help! Problems talking to upstream switch

I'm new to *, but I've dealt with this issue on other switches.  It sounds like either you are timing out getting DNIS information from your CO, or you are having trouble hearing the DTMF tones that are pulsed to you during the call setup process.  Someone else on the list may know: is it possible to 1) configure the timeout for waiting on DNIS and 2) is it possible to change the Rx gain on the TDM cards? 
 
It's my understanding that the circuit is going throught the channel bank, which is acting like a drop-and-insert CSU by forwarding the 12 channels with voice to your * box.  You mentioned that this was a Carrier Access channel bank, is it an ADIT 600?  There are send and recieve gain settings on the channel bank unit that you might want to play with.
 
HTH, HAND
 
-Tim
-----Original Message-----
From: Andy Hester
Sent: Sun 6/29/2003 8:59 PM
To: [EMAIL PROTECTED]
Cc:
Subject: [Asterisk-Users] Help! Problems talking to upstream switch

Hi,
        Please let me know if you have any ideas - I am taking wild guesses now....
Here is the situation:

        I put in Asterisk for a local customer.  I have Fractional T-1 with 12
Voice & 12 Data.  I have a T100P hooked up to a TDM Card (they call it a
chanel bank although it only has 2 outputs) in a CAC unit.  The unit also
has a router card that runs the data side.  My extensions are all SIP phones
save a few fax machines.  The customer has 7 digit unverified account codes
on the trunks for billing purposes.

The Problem:

        As I watch the console, I see calls coming in for exten "73" or "708" or
"08" or "730" although most come in correctly (ie "7308").  My carrier has
verified numerous times that they are sending 4 digits.  I have 40 DID
numbers that need to be routed and they are all in the 73xx range.  I need
to know anything that would cause my box randomly not to hear all 4 digits
on occasion.  Also, I have had trouble with people who dial out getting a
congestion signal mainly on Long Distance numbers.  The person would dial
the number 4 or 5 times and get congestion then it might go through.  Both
of these conditions seem to be happening only about 10-20% of the time.

What I have done:

Moved a T100P card to its own IRQ to prevent problems with interrupts - Did
not solve either issue.

On the second try, got the carrier to change the way their switch chooses
channels for incoming calls to prevent "glare" - This MAY have fixed the
outgoing long distance issue as it seems to have gone away( although it
doesn't seem logical to me that this would affect only LD) but did not fix
incoming calls.

Has anyone else had problems getting all of the digits that the Telco sends?

Thanks,
Andy Hester
Consero

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