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.

#cat freetdm.conf

[general]

cpu_monitor => yes

cpu_monitoring_interval => 2000 ; monitor usage every 2 seconds

cpu_set_alarm_threshold => 90 ; whenever 90% of global CPU usage is reached, trigger the alarm.

cpu_reset_alarm_threshold => 80 ; when the CPU usage decreases at 80%, clear the alarm.

cpu_alarm_action => reject,warn ; Start rejecting calls when the CPU alarm is triggered and also print warnings.

; ANALOG PHONES

[span zt FXS1]

fxs-channel => 1

analog-start-type => kewl

;txgain =>

;rxgain =>

;number =>

[span zt FXS2]

fxs-channel => 2

analog-start-type => kewl

;txgain =>

;rxgain =>

;number =>

; PSTN TRUNK LINES

[span zt FXO5]

trunk-type => FXO

fxo-channel => 5

analog-start-type => kewl

;txgain =>

;rxgain =>

;number =>

[span zt FXO6]

trunk-type => FXO

fxo-channel => 6

analog-start-type => kewl

;txgain =>

;rxgain =>

;number =>

[span zt FXO7]

trunk-type => FXO

fxo-channel => 7

analog-start-type => kewl

;txgain =>

;rxgain =>

;number =>