[asterisk-biz] PRI dropped calls, D channel traces, and more

[Mitul Limbani]

Oh yeah and I m sure I get $500 you promised, coz I have solved this  
problem for 6 customers of mine and or minimised the effect  
drastically (like call drop reduced to like 0-2/ day max)

Get me remote access if you want off the list.

Regards,
Mitul Limbani,
Founder & CEO,
Enterux Solutions Pvt Ltd,
The Enterprise Linux Company(r),
http://www.enterux.com/


On 02-Apr-09, at 7:21, Harry McGregor <hmcgregor at biggeeks.org> wrote:

> Hi,
>
> We are having some issues with dropped calls on our combined voice/ 
> data
> T1 (ISDN PRI hand over of the voice channels).
>
> Our users are reporting frequent (3-10/day for an 8 person office)
> dropped calls, including calls with the other party being on a land  
> line.
>
> The telco keeps coming back that the line is clean.
>
> Anyone here have solid experience in reading through D-Channel  
> traces to
> figure out what is going on exactly, enough that we can either fix our
> Asterisk issue or push the telco for a fix.
>
> Most of the issues started when we switched from doing our own analog
> split out for fax (Sangoma T1 card, Sangoma Analog), to having our  
> telco
> split out the fax lines.
>
> We had issues with fax reliability on the sangoma pair (even though it
> had worked well for us in the past with other installs), and  
> switched to
> telco analog hand over for fax (which permitted the Windows SBS fax
> server to work, though we are getting a lot of cut off faxes).
>
> Environment is Asterisk 1.4.21 on Debian Lenny Kernel 2.6.26
>
> 01:06.0 Network controller: Sangoma Technologies Corp. A101 single- 
> port
> T1/E1 (rev 01)
> 01:07.0 Network controller: Sangoma Technologies Corp. A200/Remora
> FXO/FXS Analog AFT card
>
> -----
>
> We really need to get to the bottom of this fax issue.  We can provide
> logs, and we can provide supervised (screen),bastion host based SSH
> access to the asterisk system.
>
> I would like to keep the cost down of course, but can offer between  
> $150
> (looking at the logs, giving suggestions), up to $500 (if you can  
> truly
> solve the issue, and our users are happy).
>
>
>                                        Harry
>
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