[Freeswitch-users] TDM400P spans

[Jeromy]

Jeremy Johnson <jeremy at ...> writes:

> 
> 
> I'm trying to convert from Asterisk to Freeswitch, and have a question about
spans.
>  
> I read the freetdm configuration example for TDM400 
> and am wondering what exactly is a span.
>  
> I have 2 TDM400P cards in my computer, 
> one card has 2 FXS modules for connecting analog phones. 
> The other card has 3 FXO modules for connecting to  3 PSTN trunk lines.
>  
> # lsdahdi 
> ### Span  1: WCTDM/4 "Wildcard TDM400P REV I Board 5" 
>   1 FXS        FXOKS       (In use) (EC: OSLEC - INACTIVE)  
>   2 FXS        FXOKS       (In use) (EC: OSLEC - INACTIVE)  
>   3 unknown    Reserved     
>   4 unknown    Reserved     
> ### Span  2: WCTDM/4 "Wildcard TDM400P REV I Board 5" (MASTER) 
>   5 FXO        FXSKS       (In use) (EC: OSLEC - INACTIVE)  
>   6 FXO        FXSKS       (In use) (EC: OSLEC - INACTIVE)  
>   7 FXO        FXSKS       (In use) (EC: OSLEC - INACTIVE)  
>   8 unknown    Reserved
>  
> Do I configure freetdm as in the example for TDM400 
> with separate spans for each module like the following?
> or should I have just two spans as shown by lsdahsi?
> Thanks.
>  

Hi Jeremy

    Do you find the answer to this question?

    I'm also very confuse on the span and channel in both asterisk and
freeswitch, and I've found little explaination on this.

    "	A span is a logical unit that represents a group of channels. 
	With digital telephony, a span usually represents a physical port on the card. 
	If the system has only one such card with a single port, so it is referred to
as span 1. "

    Could anyone help on this?

    Thanks in advance!