<div class="gmail_quote">On Sun, Mar 18, 2012 at 10:58 AM, Jeromy <span dir="ltr"><<a href="mailto:fuji246@gmail.com">fuji246@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
> I'm trying to convert from Asterisk to Freeswitch, and have a question about<br>
spans.<br>
> <br>
> I read the freetdm configuration example for TDM400<br>
> and am wondering what exactly is a span.<br>
> <br>
> I have 2 TDM400P cards in my computer,<br>
> one card has 2 FXS modules for connecting analog phones.<br>
> The other card has 3 FXO modules for connecting to 3 PSTN trunk lines.<br>
> <br>
> # lsdahdi<br>
> ### Span 1: WCTDM/4 "Wildcard TDM400P REV I Board 5"<br>
> 1 FXS FXOKS (In use) (EC: OSLEC - INACTIVE)<br>
> 2 FXS FXOKS (In use) (EC: OSLEC - INACTIVE)<br>
> 3 unknown Reserved<br>
> 4 unknown Reserved<br>
> ### Span 2: WCTDM/4 "Wildcard TDM400P REV I Board 5" (MASTER)<br>
> 5 FXO FXSKS (In use) (EC: OSLEC - INACTIVE)<br>
> 6 FXO FXSKS (In use) (EC: OSLEC - INACTIVE)<br>
> 7 FXO FXSKS (In use) (EC: OSLEC - INACTIVE)<br>
> 8 unknown Reserved<br>
> <br>
> Do I configure freetdm as in the example for TDM400<br>
> with separate spans for each module like the following?<br>
> or should I have just two spans as shown by lsdahsi?<br>
> Thanks.<br>
> <br>
<br>
Hi Jeremy<br>
<br>
Do you find the answer to this question?<br>
<br>
I'm also very confuse on the span and channel in both asterisk and<br>
freeswitch, and I've found little explaination on this.<br>
<br>
" A span is a logical unit that represents a group of channels.<br>
With digital telephony, a span usually represents a physical port on the card.<br>
If the system has only one such card with a single port, so it is referred to<br>
as span 1. "<br>
<br>
Could anyone help on this?<br>
<br>
</blockquote><div><br></div><div>At the very least you need 2 freetdm span configurations because you cannot mix FXS and FXO channels in the same FreeTDM logical span.</div><div><br></div><div><a href="http://wiki.freeswitch.org/wiki/FreeTDM#DAHDI_mode">http://wiki.freeswitch.org/wiki/FreeTDM#DAHDI_mode</a></div>
<div><br></div><div>For the given hardware output, I'd simply create 2 spans, one for all the fxo channels and one for all the fxs channels.</div><div><br class="Apple-interchange-newline"><table border="0" cellspacing="0" cellpadding="0" width="648" style="width:486.3pt;border-collapse:collapse">
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