[asterisk-users] Maximum number of PRI calls on 1 asterisk box (no HW echo)

[Stephen Davies]

On 25 March 2010 02:42, James Lamanna <jlamanna at gmail.com> wrote:

> Hi,
> I have a TE410P T1 (1st gen) card and I'm seeing interesting errors of
> D-Channels going down and then coming back up (See below).
>
>
Read all the discussion about many spans - and I've run 16 E1 spans in one
box, and run 8 spans under 200+ concurrent calls.

Your 1st gen TE410 card is very old and I'd suggest to contact Digium about
a firmware upgrade or a hardware upgrade.

As for the spans going down:-

1) Make sure you are syncing your clock to your telco (span=1,1,0,...)
2) Make sure you are using the right IDE driver module for your chipset and
not the generic one
3) Avoid long runs (>25m?) of unscreened cable on the T1/E1 span

Regards,
Steve
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